<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342025000600113</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v16i6.3819</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Protocolo para el establecimiento in vitro de Psidium guajava L. mediante semillas, para la conservación de germoplasma nativo]]></article-title>
<article-title xml:lang="en"><![CDATA[A protocol for the in vitro establishment of Psidium guajava L. using seeds, for the conservation of native germplasm]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perales-Aguilar]]></surname>
<given-names><![CDATA[Lucila]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perales-Segovia]]></surname>
<given-names><![CDATA[Catarino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Gaona]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-Ramírez]]></surname>
<given-names><![CDATA[José Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Pabellón de Arteaga Tecnológico Nacional de México ]]></institution>
<addr-line><![CDATA[ Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico el Llano Aguascalientes Tecnológico Nacional de México ]]></institution>
<addr-line><![CDATA[ Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Pabellón ]]></institution>
<addr-line><![CDATA[ Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Tecnológico Superior de Apatzingán Tecnológico Nacional de México ]]></institution>
<addr-line><![CDATA[Apatzingán Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2025</year>
</pub-date>
<volume>16</volume>
<numero>6</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342025000600113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342025000600113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342025000600113&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La guayaba Psidium guajava L. es un frutal muy importante para Aguascalientes. En el municipio de Calvillo se establecieron huertos de guayaba con una superficie de más de 6 000 ha. El problema actual, es que está siendo sustituido por otros cultivos como el aguacate, limón y hortalizas. Una solución para la conservación de estos importantes recursos genéticos son los bancos de germoplasma, ligados con la propagación in vitro, que es una herramienta biotecnológica que permite reproducir plantas sanas de guayaba, en espacios reducidos y condiciones controladas. Ante ello, se estandarizó una metodología para el establecimiento in vitro de semillas de guayaba. Se evaluaron en un primer experimento cuatro tratamientos, para mejorar las condiciones de asepsia, después se realizó un segundo experimento para determinar la mejor propuesta de cultivo in vitro, incluyendo semillas escarificadas y no escarificadas para definir el protocolo completo. En el primer experimento, el T3 con tween( 20 (polisorbato) al 0.1%, fractal( (extracto de semillas de cítricos) 6 ml L-1, cloro al 5% y etanol al 70% presentó 95% de asepsia. En el segundo experimento, de la etapa de establecimiento in vitro, el T4, de semilla escarificada con carbón activado, obtuvo 90% de germinación con una longitud de 4.05 cm. Finalmente se encontró que el medio de cultivo, usando semilla escarificada, MS suplementado con 2 g L-1 de carbón activado, 0.5 mg L-1 de BAP y 7.5 g L-1 de agar-agar, fue el mejor para establecer el protocolo de reproducción in vitro.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The guava Psidium guajava L. is a very important fruit tree for Aguascalientes. In the municipality of Calvillo, guava orchards were established with an area of more than 6 000 ha. The current problem is that it is being replaced with other crops, such as avocados, lemons, and vegetables. One solution for the conservation of these important genetic resources is germplasm banks, linked to in vitro propagation, which is a biotechnological tool that allows healthy guava plants to be reproduced in small spaces and controlled conditions. In view of this, a methodology for the in vitro establishment of guava seeds was standardized. Four treatments were evaluated in a first experiment to improve aseptic conditions, then a second experiment was conducted to determine the best in vitro culture proposal, including scarified and non-scarified seeds to define the complete protocol. In the first experiment, T3 with 0.1% Tween® 20 (polysorbate), 6 ml L-1 Fractal® (citrus seed extract), 5% chlorine, and 70% ethanol showed 95% asepsis. In the second experiment, from the in vitro establishment stage, T4, with seed scarified with activated charcoal, obtained 90% germination with a length of 4.05 cm. Finally, it was found that, using scarified seed, the MS culture medium supplemented with 2 g L-1 of activated charcoal, 0.5 mg L-1 of BAP and 7.5 g L-1 of agar-agar was the best to establish the in vitro reproduction protocol.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[asepsia]]></kwd>
<kwd lng="es"><![CDATA[conservación]]></kwd>
<kwd lng="es"><![CDATA[cultivo in vitro]]></kwd>
<kwd lng="es"><![CDATA[guayaba]]></kwd>
<kwd lng="en"><![CDATA[asepsis]]></kwd>
<kwd lng="en"><![CDATA[conservation]]></kwd>
<kwd lng="en"><![CDATA[guava]]></kwd>
<kwd lng="en"><![CDATA[in vitro culture]]></kwd>
</kwd-group>
</article-meta>
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