<?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>S2007-42982024000200447</article-id>
<article-id pub-id-type="doi">10.17129/botsci.3392</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Fruit and seed morphometry and seed structure of the potentially invasive Calotropis procera (Aiton) W.T. Aiton (Apocynaceae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarrete-Sauza]]></surname>
<given-names><![CDATA[Emiliano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Aréchiga]]></surname>
<given-names><![CDATA[Mariana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Pacheco]]></surname>
<given-names><![CDATA[Mónica Karina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Márquez-Guzmán]]></surname>
<given-names><![CDATA[Judith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ecología ]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>102</volume>
<numero>2</numero>
<fpage>447</fpage>
<lpage>463</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982024000200447&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982024000200447&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982024000200447&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Calotropis procera is a plant native from the tropics and subtropics of Asia and Africa. In Mexico, its presence is now registered in Yucatán, Quintana Roo and Oaxaca.  Questions and / or Hypotheses:  Fruit and seed morphometry vary among places where it is native or exotic? Are seed structures well identified in Calotropis procera?  Studied species: The exotic Calotropis procera has been already reported in several states in Mexico, however, information about its reproductive biology in Mexican populations is scarce.  Studied site and dates:  Fruits were collected in Oaxaca, Mexico in September 2019.  Methods: We obtained fruit and seed morphometric data and seed images with microscopy.  Results: The fruits are green and ovoid. The average number of seeds per fruit is 364 ± 86 (SD). The seed is brown and flattened dorsoventrally. The length of the seeds is 8.37 ± 0.413 mm, the width is 5.01 ± 0.39 mm, and the weight is 10.5 ± 7.86 mg. The position of the hilum and the micropyle is reported and the occurrence of two types of trichomes on the testa. We suggest that the protrusion on the ventral surface of the seed is the raphe.  Conclusions:  From data obtained we concluded that fruit and seed characteristics are well conserved in this species. We confirmed the position of the hilum and micropyle and reported the presence of two types of trichomes in the testa. Location of the raphe is suggested, providing information that may be useful for future taxonomic studies.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Calotropis procera es nativa del trópico y subtrópico de Asia y África. En México se encuentra en Yucatán, Quintana Roo y Oaxaca.  Preguntas y / o Hipótesis: ¿La morfometría de frutos y semillas varía en donde es nativa o exótica? ¿Las estructuras de la semilla de Calotropis procera han sido bien identificadas?  Especie de estudio: La exótica Calotropis procera ya se ha reportado en varios estados de México, sin embargo, hay poca información sobre su biología reproductiva en las poblaciones mexicanas.  Sitio y años de estudio: Los frutos se colectaron en Oaxaca, México en septiembre de 2019.  Métodos: Se obtuvieron datos morfométricos de frutos y semillas y se tomaron imágenes mediante microscopía.  Resultados:  Los frutos son folículos ovoides y coriáceos. El promedio de semillas por fruto es de 364 ± 86 (DE). La semilla es café y aplanada dorsoventralmente. El largo es de 8.37 ± 0.413 mm, ancho de 5.01 ± 0.39 mm y el peso es de 10.5 ± 7.86 mg. Se reporta la posición del hilo y del micrópilo y la existencia de dos tipos de tricomas en la testa. Sugerimos que el relieve en la superficie ventral de la semilla es el rafe.  Conclusiones:  De los datos obtenidos concluimos que las características de frutos y semillas están bien conservadas en esta especie. Confirmamos la posición del hilo y del micrópilo, y reportamos la existencia de dos tipos de tricomas en la testa. Se sugiere la posición del rafe, lo que puede apoyar en futuros estudios taxonómicos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Apocynoideae]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[seed morphology]]></kwd>
<kwd lng="en"><![CDATA[seed morphometry]]></kwd>
<kwd lng="es"><![CDATA[Apocynoideae]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="es"><![CDATA[morfología de semillas]]></kwd>
<kwd lng="es"><![CDATA[morfometría de semillas]]></kwd>
</kwd-group>
</article-meta>
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