<?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>S2007-42982018000400628</article-id>
<article-id pub-id-type="doi">10.17129/botsci.1914</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Varietal and germinative characterization of Agave potatorum (Asparagaceae) seeds with different origins]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Hernández]]></surname>
<given-names><![CDATA[Yolanda Donají]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Hernández]]></surname>
<given-names><![CDATA[Germán Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Corzo-Ríos]]></surname>
<given-names><![CDATA[Luis Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Ramírez]]></surname>
<given-names><![CDATA[Elpidio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Tomás]]></surname>
<given-names><![CDATA[Sabino Honorio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Oaxaca ]]></institution>
<addr-line><![CDATA[Oaxaca ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Politécnico Nacional Unidad Profesional Interdisciplinaria de Biotecnología ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>96</volume>
<numero>4</numero>
<fpage>628</fpage>
<lpage>639</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982018000400628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982018000400628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982018000400628&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background: Agave potatorum reproduces mainly through seeds is widely collected for the mezcal production, and there is currently a marked decrease in their wild populations. Therefore, to contribute to its sustainable use, it is important to characterize the morphology of its seeds and to know their germinative characteristics.  Research question: Do the year and the collection site have an effect on the size, color, viability and germination capacity of Agave potatorum seeds?  Species studied: Agave potatorum Zucc.  Study site and period of research: Seeds of Agave potatorum were collected in Oaxaca, Mexico: Miahuatlán (MIAH), in 2014; Coixtlahuaca (COIX), in 2015; and Zaachila (ZAA), in 2015 and 2016.  Methods: For the seeds, we analyzed four physical descriptors, five color coordinates, and nine germination variables. We used a completely randomized design with four replications (100 seeds). An analysis of variance, a comparison of means, and a linear correlation analysis were performed.  Results: We found that the ZAA16 seeds showed the highest values (P &lt; 0.05) for weight and size, and for the luminosity coordinate (L*, 15.2). Color coordinate values revealed a black color of the seeds, which significantly diminished in luminosity with seeds age and varied with their origin. The coordinate L* was correlated significantly with the total dry weight of seedlings and seed volume.  Conclusions: Agave potatorum seeds significantly changed their physical dimensions and germination capacity according to their origin. The luminosity of the black color of seeds decreased with seed age and was correlated with seed volume and seedling total dry weight.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes: El Agave potatorum se reproduce principalmente por semilla, se recolecta ampliamente para producir mezcal y sus poblaciones silvestres están reduciéndose. Por ello, para contribuir a su utilización sustentable es importante caracterizar sus semillas, en términos de morfología y características germinativas.  Pregunta: ¿El año y el sitio de colecta afectan el tamaño, el color, la viabilidad y la capacidad de germinación de las semillas de Agave potatorum?  Especie estudiada: Agave potatorum Zucc.  Sitio de estudio y fecha: Las semillas se colectaron en Oaxaca, México: Miahuatlán (MIAH), en 2014, Coixtlahuaca (COIX), en 2015) y Zaachila (ZAA), en 2015 y 2016.  Métodos: Se evaluaron cuatro descriptores físicos de semilla, cinco coordenadas de color y nueve variables de la germinación. Se empleó un diseño completamente al azar con cuatro repeticiones de 100 semillas. Los resultados se sometieron a análisis de varianza, comparación de medias (Tukey, P &lt; 0.05) y correlación lineal.  Resultados: Las semillas de ZAA16 mostraron los valores más altos (P &lt; 0.05) de peso, tamaño y luminosidad. Las coordenadas de color revelaron el color negro de las semillas, del cual disminuyó significativamente su luminosidad con la edad y con el área de colecta. La luminosidad de la semilla correlacionó significativamente con peso seco total de plántula y volumen de semilla.  Conclusiones: Las semillas de Agave potatorum cambiaron sus dimensiones físicas y capacidad germinativa según su origen. La luminosidad del color de las semillas disminuyó con su edad y correlacionó con volumen de semilla y peso seco total de plántula.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Agave potatorum]]></kwd>
<kwd lng="en"><![CDATA[seedling emergence]]></kwd>
<kwd lng="en"><![CDATA[seed germination]]></kwd>
<kwd lng="en"><![CDATA[tetrazolium]]></kwd>
<kwd lng="en"><![CDATA[varietal description]]></kwd>
<kwd lng="en"><![CDATA[viability]]></kwd>
<kwd lng="es"><![CDATA[Agave potatorum]]></kwd>
<kwd lng="es"><![CDATA[descripción varietal]]></kwd>
<kwd lng="es"><![CDATA[emergencia de plántulas]]></kwd>
<kwd lng="es"><![CDATA[germinación]]></kwd>
<kwd lng="es"><![CDATA[tetrazolio]]></kwd>
<kwd lng="es"><![CDATA[viabilidad]]></kwd>
</kwd-group>
</article-meta>
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