<?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>S2007-42982016000300575</article-id>
<article-id pub-id-type="doi">10.17129/botsci.512</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Germinación de semillas de Magnolia pugana (Magnoliaceae), especie endémica y en peligro de extinción del occidente de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Seed germination of Magnolia pugana (Magnoliaceae), an endemic and endangered species from Western Mexico]]></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[Romo-Campos]]></surname>
<given-names><![CDATA[Rosa]]></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-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de Ciencias Biológicas y Agropecuarias Departamento de Ciencias Ambientales]]></institution>
<addr-line><![CDATA[Zapopan Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Potosino de Investigación Científica y Tecnológica  ]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>94</volume>
<numero>3</numero>
<fpage>575</fpage>
<lpage>584</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982016000300575&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982016000300575&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982016000300575&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Magnolia pugana es una especie endémica y en peligro de extinción localizada en el occidente de México, que se distribuye en bosques de galería en las barrancas del sur de Zacatecas y centro-norte de Jalisco. El objetivo de este trabajo fue conocer la viabilidad de las semillas e identificar los tratamientos para romper la latencia de semillas de esta especie. Se colectaron semillas de cuatro localidades, tres en Jalisco (Centro Universitario de Ciencias Biológicas y Agropecuarias, San Lorenzo y San Nicolás) y una en Zacatecas (Palo Verde). Se aplicaron los siguientes tratamientos germinativos: (1) remoción manual del arilo, (2) remoción de arilo por lixiviación, (3) inmersión en ácido giberélico con 100 mg L-1, (4) inmersión en ácido giberélico con 200 mg L-1, (5) inmersión en ácido giberélico con 300 mg L-1 y (6) control. Se utilizaron 100 semillas por tratamiento con cinco repeticiones cada una. El tratamiento que presentó el mayor porcentaje de germinación para las cuatro localidades fue la remoción manual del arilo con 52 %, mientras que el tratamiento con menor germinación fue el control con 3.5 %. Por localidad, San Lorenzo obtuvo el mayor porcentaje de germinación con 16.5% en promedio, mientras que San Nicolás registró el menor con 5.33 %. Los tratamientos germinativos no lograron romper la latencia (porcentajes de germinación &lt; 70 %). Las semillas de las cuatro localidades se embebieron de agua por lo que no se presenta la latencia física. Las semillas con mayor biomasa absorbieron menos agua.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Magnolia pugana is an endemic and endangered species located in western Mexico, which is distributed in gallery forests in the canyons of southern Zacatecas and north-central Jalisco. The aim of this study was to determine the seed viability and to identify the treatments to break seed dormancy in M. pugana. Seeds were collected from four locations, three of them located in Jalisco (Centro Universitario de Ciencias Biológicas y Agropecuarias, San Lorenzo and San Nicolas) and one in Zacatecas (Palo Verde). The following germinative treatments were applied: (1) manual aril removal, (2) aril removal by leaching, soaking in gibberellic acid at different concentrations: (3) 100 mg L-1, (4) 200 mg L-1, (5) 300 mg L-1, and (6) control. One hundred seeds were used per treatment with five replicates each. The treatment with the highest germination percentage for all four sites was the manual aril removal with 52 %, whereas the treatment with the lowest germination was the control with 3.5 %. By location San Lorenzo had the highest germination percentage at 16.5 %, while San Nicolas had the lowest percentage (5.33 %). Germination treatments failed to break dormancy (germination rates &lt; 70 %). The seeds of the four locations imbibed water so no physical seed dormancy occurs. Seeds with higher biomass did absorb less water.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[latencia de semillas]]></kwd>
<kwd lng="es"><![CDATA[Magnoliaceae]]></kwd>
<kwd lng="es"><![CDATA[tratamientos germinativos]]></kwd>
<kwd lng="es"><![CDATA[viabilidad de semillas]]></kwd>
<kwd lng="en"><![CDATA[germinative treatments]]></kwd>
<kwd lng="en"><![CDATA[Magnoliaceae]]></kwd>
<kwd lng="en"><![CDATA[seed dormancy]]></kwd>
<kwd lng="en"><![CDATA[seed viability]]></kwd>
</kwd-group>
</article-meta>
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