<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982022000100192</article-id>
<article-id pub-id-type="doi">10.17129/botsci.2810</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Seed integrity, effect of temperature and storage time on germination of Populus luziarum and P. primaveralepensis, endangered subtropical species from Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Integridad de semillas, efecto de temperatura y tiempo de almacenamiento en la germinación de Populus luziarum y P. primaveralepensis, especies subtropicales en peligro de extinción de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jacobo-Pereira]]></surname>
<given-names><![CDATA[César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñiz-Castro]]></surname>
<given-names><![CDATA[Miguel Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-García]]></surname>
<given-names><![CDATA[J. Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores]]></surname>
<given-names><![CDATA[Joel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Urias]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huerta-Martínez]]></surname>
<given-names><![CDATA[Francisco Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,aff1  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de Ciencias Biológicas y Agropecuarias Departamento de Botánica y Zoología]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Potosino de Investigación Científica y Tecnológica A.C. División de Ciencias Ambientales ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de Ciencias Biológicas y Agropecuarias Departamento de Ecología]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>100</volume>
<numero>1</numero>
<fpage>192</fpage>
<lpage>203</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982022000100192&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982022000100192&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982022000100192&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Populus luziarum and P. primaveralepensis are endemic species of western Mexico; growing in riparian forests they are critically endangered. The best way to conserve their seeds is unknown, which could be limiting for their conservation.  Hypothesis:  The germinability of both subtropical species is like that of boreal and template Salicaceae species that disperse seeds in spring and early summer, as they germinate quickly with high percentages, and rapidly lose their viability when stored at ambient temperature.  Studied species: Populus luziarum and P. primaveralepensis.  Study site and dates: Western Trans-Mexican Volcanic Belt. Jalisco, Mexico. October 2019.  Methods:  The physical integrity of the seeds was assessed by X-ray imaging and compared with germinability. In addition, the effect of storage time (nine weeks) under two temperatures (4 and 21 °C) on the percentage and mean germination rate was evaluated.  Results: No significant differences were found between physical integrity and germination in freshly collected seeds for both species. Germination in the first 24 hrs was 91 and 95 % for Populus luziarum and P. primaveralepensis, respectively (week 0). Germination percentages were lower when stored at 21 °C, but P. primaveralepensis was decreased more slowly.  Conclusions:  Seeds of subtropical Populus respond similarly to those of species from temperate and boreal climates with early seed dispersal, a crucial condition for establishing ex situ reforestation and conservation programs.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes: Populus luziarum y P. primaveralepensis son especies endémicas del occidente de México; crecen en bosques ribereños están en peligro crítico. Se desconoce la mejor manera para conservar sus semillas, lo que podría ser limitante para su conservación.  Hipótesis:  La germinabilidad de ambas especies subtropicales, es similar al de las especies de la familia Salicaceae boreales y templadas que dispersan semillas en primavera y principios de verano, ya que germinan rápido con altos porcentajes y pierden rápidamente su viabilidad cuando se almacenan a temperatura ambiente.  Especies estudiadas: Populus luziarum y P. primaveralepensis.  Sitio de estudio y fecha:  Cinturón Volcánico Trans-Mexicano Occidental. Jalisco, México. Octubre 2019.  Métodos:  se evaluó la integridad física de las semillas mediante imágenes de rayos X y se comparó con germinabilidad. Además, se evaluó el efecto del tiempo de almacenamiento (nueve semanas) bajo dos temperaturas (4 y 21 °C) en el porcentaje y la tasa media de germinación.  Resultados:  No se encontraron diferencias significativas entre la integridad física y la germinación en semillas recién recolectadas, para ambas especies. La germinación en las primeras 24 horas fue 91 y 95 % para Populus luziarum y P. primaveralepensis respectivamente (semana 0). Los porcentajes de germinación fueron menores cuando se almacenaron a 21 °C. pero Populus primaveralepensis disminuyó más lentamente.  Conclusiones:  Las semillas de Populus subtropicales responden de forma similar a las de las especies de climas templados y boreales con una dispersión temprana de las semillas, una condición crucial para establecer programas de repoblación y conservación ex situ.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Salicaceae]]></kwd>
<kwd lng="en"><![CDATA[seed physical integrity]]></kwd>
<kwd lng="en"><![CDATA[seed storage conditions]]></kwd>
<kwd lng="en"><![CDATA[subtropical endemic species]]></kwd>
<kwd lng="en"><![CDATA[white poplars]]></kwd>
<kwd lng="es"><![CDATA[Álamos blancos]]></kwd>
<kwd lng="es"><![CDATA[condiciones de almacenamiento de semillas]]></kwd>
<kwd lng="es"><![CDATA[especies endémicas subtropicales]]></kwd>
<kwd lng="es"><![CDATA[integridad física de semillas]]></kwd>
<kwd lng="es"><![CDATA[Salicaceae]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abud]]></surname>
<given-names><![CDATA[HF]]></given-names>
</name>
<name>
<surname><![CDATA[Cicero]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Gomes-Junior]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Radiographic images and relationship of the internal morphology and physiological potential of broccoli seeds]]></article-title>
<source><![CDATA[Acta Scientiarum Agronomy]]></source>
<year>2018</year>
<volume>40</volume>
<page-range>1-9</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baskin]]></surname>
<given-names><![CDATA[CC]]></given-names>
</name>
<name>
<surname><![CDATA[Baskin]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<source><![CDATA[Seeds: Ecology, biogeography, and evolution of dormancy and germination]]></source>
<year>2014</year>
<publisher-loc><![CDATA[San Diego ]]></publisher-loc>
<publisher-name><![CDATA[Elsevier Sciences]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bonner]]></surname>
<given-names><![CDATA[FT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Storage of seed]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Bonner]]></surname>
<given-names><![CDATA[FT]]></given-names>
</name>
<name>
<surname><![CDATA[Karrfalt]]></surname>
<given-names><![CDATA[RP]]></given-names>
</name>
</person-group>
<source><![CDATA[The woody plant seed manual agriculture]]></source>
<year>2008</year>
<page-range>85-96</page-range><publisher-loc><![CDATA[Washington DC ]]></publisher-loc>
<publisher-name><![CDATA[U.S. Department of Agriculture, Forest Service]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chilpa-Galván]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Márquez-Guzmán]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zotz]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Echevarría-Machado]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Espadas Manrique]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Reyes-García]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seed traits favouring dispersal and establishment of six epiphytic Tillandsia (Bromeliaceae) species]]></article-title>
<source><![CDATA[Seed Science Research]]></source>
<year>2018</year>
<volume>4</volume>
<page-range>349-59</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Crawley]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
</person-group>
<source><![CDATA[The R Book]]></source>
<year>2012</year>
<publisher-loc><![CDATA[UK ]]></publisher-loc>
<publisher-name><![CDATA[John Wiley &amp; Sons]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Medeiros]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Araújo]]></surname>
<given-names><![CDATA[JO]]></given-names>
</name>
<name>
<surname><![CDATA[León]]></surname>
<given-names><![CDATA[MJZ]]></given-names>
</name>
<name>
<surname><![CDATA[Da Silva]]></surname>
<given-names><![CDATA[LJ]]></given-names>
</name>
<name>
<surname><![CDATA[Dias]]></surname>
<given-names><![CDATA[DCFS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Parameters based on X-ray images to assess the physical and physiological quality of Leucaena leucocephala seeds]]></article-title>
<source><![CDATA[Ciência e Agrotecnologia]]></source>
<year>2018</year>
<volume>42</volume>
<page-range>643-52</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Medeiros]]></surname>
<given-names><![CDATA[AD]]></given-names>
</name>
<name>
<surname><![CDATA[Zavala-León]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Da Silva]]></surname>
<given-names><![CDATA[LJ]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[AMS]]></given-names>
</name>
<name>
<surname><![CDATA[Dias]]></surname>
<given-names><![CDATA[DCFS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Relationship between internal morphology and physiological quality of pepper seeds during fruit maturation and storage]]></article-title>
<source><![CDATA[Agronomy Journal]]></source>
<year>2020</year>
<volume>112</volume>
<page-range>25-35</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Dickmann]]></surname>
<given-names><![CDATA[DI]]></given-names>
</name>
<name>
<surname><![CDATA[Kuzovkina]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Poplars and willows of the world, with emphasis on silviculturally important species]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Isebrands]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<name>
<surname><![CDATA[Richardson]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<source><![CDATA[Poplars and Willows: Trees for Society and the Environment]]></source>
<year>2014</year>
<page-range>88-91</page-range><publisher-loc><![CDATA[Rome ]]></publisher-loc>
<publisher-name><![CDATA[CAB International]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eckenwalder]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Systematics and evolution of Populus]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Stettler]]></surname>
<given-names><![CDATA[RF]]></given-names>
</name>
<name>
<surname><![CDATA[Jr. HD]]></surname>
<given-names><![CDATA[Bradshaw]]></given-names>
</name>
<name>
<surname><![CDATA[Heilman]]></surname>
<given-names><![CDATA[PE]]></given-names>
</name>
<name>
<surname><![CDATA[Hinckley]]></surname>
<given-names><![CDATA[TM]]></given-names>
</name>
</person-group>
<source><![CDATA[Biology of Populus and its implications for management and conservation, Part I]]></source>
<year>1996</year>
<page-range>7-32</page-range><publisher-loc><![CDATA[Ottawa ]]></publisher-loc>
<publisher-name><![CDATA[NRC Research Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Fechner]]></surname>
<given-names><![CDATA[GH]]></given-names>
</name>
<name>
<surname><![CDATA[Burr]]></surname>
<given-names><![CDATA[KE]]></given-names>
</name>
<name>
<surname><![CDATA[Myers]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effects of storage, temperature, and moisture stress on seed germination and early seedling development of trembling aspen]]></article-title>
<source><![CDATA[Canadian Journal of Forest Research]]></source>
<year>1981</year>
<volume>11</volume>
<page-range>718-22</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gomes-Junior]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Chiquito]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Marcos-Filho]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Semi-automated assessment of the embryonic area of cucumber seeds and its relationship to germination and seedling length]]></article-title>
<source><![CDATA[Journal of Seed Science]]></source>
<year>2013</year>
<volume>35</volume>
<page-range>183-9</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gomes-Junior]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Yagushi]]></surname>
<given-names><![CDATA[JT]]></given-names>
</name>
<name>
<surname><![CDATA[Belini]]></surname>
<given-names><![CDATA[UL]]></given-names>
</name>
<name>
<surname><![CDATA[Cicero]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Tomazello-Filho]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[X-ray densitometry to assess internal seed morphology and quality]]></article-title>
<source><![CDATA[Seed Science and Technology]]></source>
<year>2012</year>
<volume>40</volume>
<page-range>102-7</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Comín]]></surname>
<given-names><![CDATA[FA]]></given-names>
</name>
<name>
<surname><![CDATA[Muller]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seed dispersal, germination and early seedling establishment of Populus alba L. under simulated water table declines in different substrates]]></article-title>
<source><![CDATA[Trees]]></source>
<year>2010</year>
<volume>24</volume>
<page-range>151-63</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gordon]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Poplars: trees of the people, trees of the future]]></article-title>
<source><![CDATA[The Forestry Chronicle]]></source>
<year>2001</year>
<volume>77</volume>
<page-range>217-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harper]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
</person-group>
<source><![CDATA[Population Biology of Plants]]></source>
<year>1977</year>
<publisher-loc><![CDATA[London ]]></publisher-loc>
<publisher-name><![CDATA[Academic Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Holdridge]]></surname>
<given-names><![CDATA[LR]]></given-names>
</name>
</person-group>
<source><![CDATA[Life zone ecology]]></source>
<year>1967</year>
<publisher-loc><![CDATA[San José ]]></publisher-loc>
<publisher-name><![CDATA[Tropical Science Center]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="book">
<collab>International Seed Testing Association</collab>
<source><![CDATA[Rules for Seed Testing]]></source>
<year>2020</year>
<publisher-name><![CDATA[International Seed Testing Association]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<collab>IUCN</collab>
<source><![CDATA[IUCN Red List Categories and Criteria: Version 3.1]]></source>
<year>2019</year>
<edition>Second</edition>
<page-range>iv +32</page-range><publisher-loc><![CDATA[Gland, Switzerland ]]></publisher-loc>
<publisher-name><![CDATA[IUCN]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Javorski]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Castan]]></surname>
<given-names><![CDATA[DOC]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[SS]]></given-names>
</name>
<name>
<surname><![CDATA[Gomes-Junior]]></surname>
<given-names><![CDATA[FG]]></given-names>
</name>
<name>
<surname><![CDATA[Cicero]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Image analysis to evaluate the physiological potential and morphology of pearl millet seeds]]></article-title>
<source><![CDATA[Journal of Seed Science]]></source>
<year>2018</year>
<volume>40</volume>
<page-range>127-34</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Javorski]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Moure]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilização de raios x na avaliaçãoda morfologia interna de sementes de sorgo]]></article-title>
<source><![CDATA[Revista Brasileira de Milho e Sorgo]]></source>
<year>2017</year>
<volume>16</volume>
<page-range>310-8</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Karrenberg]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Edwards]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Kollmann]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The life history of Salicaceae living in the active zone of floodplains]]></article-title>
<source><![CDATA[Freshwater Biology]]></source>
<year>2002</year>
<volume>47</volume>
<page-range>733-48</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[DH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Extending Populus seed longevity by controlling seed moisture content and temperature]]></article-title>
<source><![CDATA[Plos One]]></source>
<year>2018</year>
<volume>13</volume>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Maroder]]></surname>
<given-names><![CDATA[HL]]></given-names>
</name>
<name>
<surname><![CDATA[Prego]]></surname>
<given-names><![CDATA[IA]]></given-names>
</name>
<name>
<surname><![CDATA[Facciuto]]></surname>
<given-names><![CDATA[GR]]></given-names>
</name>
<name>
<surname><![CDATA[Malldonado]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Maldonado]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Storage behaviour of Salix alba and Salix matsudana seeds]]></article-title>
<source><![CDATA[Annals of Botany]]></source>
<year>2000</year>
<volume>86</volume>
<page-range>1017-21</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez-González]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
<name>
<surname><![CDATA[González-Villarreal]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
</person-group>
<source><![CDATA[Taxonomía y biogeografía del género Populus, (Salicaceae) en México]]></source>
<year>2005</year>
<publisher-name><![CDATA[Universidad de Guadalajara]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moss]]></surname>
<given-names><![CDATA[EH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Longevity of Seed and establishment of seedlings in species of Populus]]></article-title>
<source><![CDATA[Botanical Gazette]]></source>
<year>1938</year>
<volume>99</volume>
<page-range>529-42</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Muller]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Teissier du Cros]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Laroppe]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Duval]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Conservation pendant 5 ans de graines de peupliers noirs (Populus nigra L.)]]></article-title>
<source><![CDATA[Annales des Sciences Forestieres]]></source>
<year>1982</year>
<volume>39</volume>
<page-range>179-85</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parsons]]></surname>
<given-names><![CDATA[RF]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Incidence and ecology of very fast germination]]></article-title>
<source><![CDATA[Seed Science Research]]></source>
<year>2012</year>
<volume>22</volume>
<page-range>161-7</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Paw&#322;owski]]></surname>
<given-names><![CDATA[TA]]></given-names>
</name>
<name>
<surname><![CDATA[Klupczy&#324;ska]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<name>
<surname><![CDATA[Staszak]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Suszka]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Proteomic analysis of black poplar (Populus nigra L.) seed storability]]></article-title>
<source><![CDATA[Annals of Forest Science]]></source>
<year>2019</year>
<volume>76</volume>
<page-range>104</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pence]]></surname>
<given-names><![CDATA[VC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Germination, desiccation and cryopreservation of seed of Populus deltoides Barr]]></article-title>
<source><![CDATA[Seed Science and Technology]]></source>
<year>1996</year>
<volume>24</volume>
<page-range>151-7</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Popova]]></surname>
<given-names><![CDATA[EV]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[DH]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[SH]]></given-names>
</name>
<name>
<surname><![CDATA[Moltchanova]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Pritchard]]></surname>
<given-names><![CDATA[HW]]></given-names>
</name>
<name>
<surname><![CDATA[Hong]]></surname>
<given-names><![CDATA[YP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Systematic overestimation of Salicaceae seed survival using radicle emergence in response to drying and storage: implications for ex situ seed banking]]></article-title>
<source><![CDATA[Acta Physiol Plant]]></source>
<year>2013</year>
<volume>35</volume>
<page-range>3015-25</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pritchard]]></surname>
<given-names><![CDATA[HW]]></given-names>
</name>
<name>
<surname><![CDATA[Nadarajan]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cryopreservation of Orthodox (Desiccation Tolerant) Seeds]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Reed]]></surname>
<given-names><![CDATA[BM]]></given-names>
</name>
</person-group>
<source><![CDATA[Plant Cryopreservation: A Practical Guide]]></source>
<year>2008</year>
<page-range>485-501</page-range><publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="book">
<collab>R Core Team</collab>
<source><![CDATA[R: A language and environment for statistical computing]]></source>
<year>2018</year>
<publisher-loc><![CDATA[Vienna, Austria ]]></publisher-loc>
<publisher-name><![CDATA[R Foundation for Statistical Computing]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ranal]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Santana]]></surname>
<given-names><![CDATA[DG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[How and why to measure the germination process?]]></article-title>
<source><![CDATA[Brazilian Journal of Botany]]></source>
<year>2006</year>
<volume>29</volume>
<page-range>1-11</page-range></nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ranal]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Santana]]></surname>
<given-names><![CDATA[DGD]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[WR]]></given-names>
</name>
<name>
<surname><![CDATA[Mendes-Rodrigues]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Calculating germination measurements and organizing spreadsheets]]></article-title>
<source><![CDATA[Brazilian Journal of Botany]]></source>
<year>2009</year>
<volume>32</volume>
<page-range>849-55</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ruiz-Corral]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Medina-García]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[García-Romero]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Agroclimatic information system for Mexico-Central America]]></article-title>
<source><![CDATA[Revista Mexicana de Ciencias Agrícolas]]></source>
<year>2018</year>
<volume>9</volume>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Scott]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jones]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review of data analysis methods for seed germination]]></article-title>
<source><![CDATA[Crop Science]]></source>
<year>1984</year>
<volume>24</volume>
<page-range>1192-9</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="book">
<collab>SEMARNAP</collab>
<source><![CDATA[Programa de Manejo Área de Protección de Flora y Fauna La Primavera]]></source>
<year>2000</year>
<publisher-loc><![CDATA[México. México, DF ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría del Medio Ambiente, Recursos Naturales y Pesca]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Siegel]]></surname>
<given-names><![CDATA[RS]]></given-names>
</name>
<name>
<surname><![CDATA[Brock]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Germination requirements of key southwestern woody riparian species]]></article-title>
<source><![CDATA[Desert Plants]]></source>
<year>1990</year>
<volume>10</volume>
<page-range>3-8</page-range></nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suszka]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Plitta]]></surname>
<given-names><![CDATA[BP]]></given-names>
</name>
<name>
<surname><![CDATA[Michalak]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bujarska-Borkowska]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Tylkowski]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Chmielarz]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimal seed water content and storage temperature for preservation of Populus nigra L. germplasm]]></article-title>
<source><![CDATA[Annals of Forest Science]]></source>
<year>2014</year>
<volume>71</volume>
<page-range>543-9</page-range></nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tauer]]></surname>
<given-names><![CDATA[CG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Seed tree, vacuum, and temperature effects on eastern cottonwood seed viability during extended storage]]></article-title>
<source><![CDATA[Forest Science]]></source>
<year>1979</year>
<volume>25</volume>
<page-range>112-4</page-range></nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vandelook]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Janssens]]></surname>
<given-names><![CDATA[SB]]></given-names>
</name>
<name>
<surname><![CDATA[Probert]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Relative embryo length as an adaptation to habitat and life cycle in Apiaceae]]></article-title>
<source><![CDATA[New Phytologist]]></source>
<year>2012</year>
<volume>195</volume>
<page-range>479-87</page-range></nlm-citation>
</ref>
<ref id="B42">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vázquez-García]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Cuevas-Guzmán]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Una nueva especie tropical de Populus (Salicaceae) de la Sierra de Manantlán, Jalisco, México]]></article-title>
<source><![CDATA[Acta Botánica Mexicana]]></source>
<year>1989</year>
<volume>8</volume>
<page-range>39-45</page-range></nlm-citation>
</ref>
<ref id="B43">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vázquez-García]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Muñiz-Castro]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez-González]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
<name>
<surname><![CDATA[Nieves-Hernández]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Pulido-Ávila]]></surname>
<given-names><![CDATA[MG]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Vera]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Zuno-Delgadillo]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Populus primaveralepensis sp. nov. (Salicaceae, Malpighiales), a new species of white poplar from the Bosque La Primavera Biosphere Reserve in western Mexico]]></article-title>
<source><![CDATA[European Journal of Taxonomy]]></source>
<year>2019</year>
<volume>498</volume>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B44">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vázquez-García]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Muñiz-Castro]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Padilla-Lepe]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Pulido]]></surname>
<given-names><![CDATA[MG]]></given-names>
</name>
<name>
<surname><![CDATA[Nieves]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Martínez]]></surname>
<given-names><![CDATA[RE]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Populus luzae (Salicaceae), a new species of white poplar endemic to the western Transmexican Volcanic Belt, in Zapopan, Jalisco, Mexico]]></article-title>
<source><![CDATA[Phytotaxa]]></source>
<year>2017</year>
<volume>328</volume>
<page-range>243-56</page-range></nlm-citation>
</ref>
<ref id="B45">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Vázquez-Yanes]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Orozco-Segovia]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Patterns of seed longevity and germination in the tropical rainforest]]></article-title>
<source><![CDATA[Annual Review of Ecology and Systematics]]></source>
<year>1993</year>
<volume>24</volume>
<page-range>69-87</page-range></nlm-citation>
</ref>
<ref id="B46">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Venable]]></surname>
<given-names><![CDATA[DL]]></given-names>
</name>
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The selective interaction of dispersal, dormancy, and seed size as adaptation for reducing risk in variable environments]]></article-title>
<source><![CDATA[The American Naturalist]]></source>
<year>1988</year>
<volume>131</volume>
<page-range>360-84</page-range></nlm-citation>
</ref>
<ref id="B47">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wyckoff]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Zasada]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Populus L.]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Bonner]]></surname>
<given-names><![CDATA[FT]]></given-names>
</name>
<name>
<surname><![CDATA[Karrfalt]]></surname>
<given-names><![CDATA[RP]]></given-names>
</name>
</person-group>
<source><![CDATA[The Woody Plant Seed Manual Agriculture]]></source>
<year>2008</year>
<page-range>856-71</page-range><publisher-loc><![CDATA[Washington DC. U.S ]]></publisher-loc>
<publisher-name><![CDATA[Department of Agriculture, Forest Service]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B48">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zasada]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Densmore]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Alaskan willow and balsam poplar seed viability after 3 years storage]]></article-title>
<source><![CDATA[Tree Planters' Notes]]></source>
<year>1980</year>
<volume>31</volume>
<page-range>9-10</page-range></nlm-citation>
</ref>
<ref id="B49">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zasada]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<name>
<surname><![CDATA[Viereck]]></surname>
<given-names><![CDATA[LA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effect of temperature and stratification on germination in selected members of the Salicaceae in interior Alaska]]></article-title>
<source><![CDATA[Canadian Journal of Forest Research]]></source>
<year>1975</year>
<volume>5</volume>
<page-range>333-7</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
