<?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>0187-7380</journal-id>
<journal-title><![CDATA[Revista fitotecnia mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. fitotec. mex]]></abbrev-journal-title>
<issn>0187-7380</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitogenética A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-73802022000100033</article-id>
<article-id pub-id-type="doi">10.35196/rfm.2022.1.33</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rendimiento e índice de cosecha de germoplasma de frijol pinto y flor de mayo bajo estrés por temperatura alta]]></article-title>
<article-title xml:lang="en"><![CDATA[Seed yield and harvest index of pinto and flor de mayo dry beans germplasm under stress by high temperature]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Anaya-López]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Tovar]]></surname>
<given-names><![CDATA[Luis Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cisneros-López]]></surname>
<given-names><![CDATA[Hugo César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acosta-Gallegos]]></surname>
<given-names><![CDATA[Jorge Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[Celaya Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Tecnológico Nacional de México  ]]></institution>
<addr-line><![CDATA[Celaya Guanajuato]]></addr-line>
<country>México</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>45</volume>
<numero>1</numero>
<fpage>33</fpage>
<lpage>41</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-73802022000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-73802022000100033&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-73802022000100033&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La productividad del frijol de riego sembrado en febrero en la región de El Bajío de Guanajuato, México es afectada por temperaturas altas durante la etapa reproductiva. El objetivo de este estudio fue determinar el efecto de la temperatura alta sobre el rendimiento e índice de cosecha en germoplasma mejorado de frijol de los tipos Pinto y Flor de Mayo e identificar materiales con rendimiento alto en riego. En 2018 se evaluaron 16 materiales de frijol Pinto y 15 de Flor de Mayo. Durante el ciclo se aplicó un riego de presiembra y tres de auxilio. Cada material se sembró en dos surcos de 30 m, y a la cosecha se tomaron al azar seis tramos de 1 m para determinar el número de vainas, numero de granos, producción de biomasa, rendimiento de grano, peso de cien semillas e índice de cosecha (IC). Los grupos se analizaron por separado bajo un diseño completamente al azar y prueba de medias dentro de grupos (Tukey, P &#8804; 0.5). Durante la etapa reproductiva las temperaturas diurna y nocturna máximas superaron los 30 y 20oC, respectivamente. En ambos grupos hubo diferencias significativas (P &#8804; 0.5) en las características evaluadas. El rendimiento mayor en los materiales de tipo Pinto lo tuvo la variedad Salinas (3.79 t ha-1) y en los de tipo Flor de Mayo la línea (PS/FM Dolores)-M-9-2-9 (3.27 t ha-1), ambos mostraron número alto de vainas por m2 y granos por vaina. En general, en ambos grupos el IC resultó bajo. En los materiales de tipo Pinto la correlación entre IC y rendimiento fue positiva (r = 0.75**), mientras que en el grupo Flor de Mayo la correlación del IC con la biomasa fue negativa (r = -0.74**), lo que mostró la importancia de la capacidad de movilización de fotoasimilados hacia la semilla en condiciones de estrés por calor y la superioridad de los genotipos Pintos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[SUMMARY The productivity of irrigated dry beans planted in February at the Bajío region of Guanajuato, Mexico is limited by high temperatures during the reproductive stage. The aim of this study was to determine the effect of high temperature on seed yield and harvest index of improved bean germplasm of the Pinto and Flor de Mayo types and to identify high-yielding materials under irrigation. For that, in 2018 Pinto and 15 Flor de Mayo bean genotypes were evaluated. During the growth cycle a pre-sowing and three supplementary irrigations were applied. Each material was planted in two 30-m rows and at harvest the plants of six 1-m sections were randomly taken to determine the number of pods, number of grains, biomass production, grain yield, the weight of 100 seeds, and the harvest index (HI). Data from each set of genotypes were analyzed separately under a completely randomized design and within-groups test of means (Tukey, P &#8804; 0.5). During the reproductive stage, maximum day and night temperatures exceeded 30 and 20oC, respectively. In both sets there were significant differences (P &#8804; 0.5) in the evaluated traits. The highest yielder in the Pinto type group was the cv. Salinas (3.79 t ha-1), and in the Flor de Mayo type the line (PS / FM Dolores)-9-2-9 (3.27 t ha-1), both showed a high number of pods per m2 and grains per pod. In general, in both groups the HI was low. In the Pinto-type materials, the correlation between HI with seed yield was positive (r = 0.75**), while in the Flor de Mayo group the correlation of HI with biomass was negative (r = -0.74**), which showed the importance of mobilization capacity of photoassimilates towards the seeds under heat stress conditions and the superiority of the Pinto genotypes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Phaseolus vulgaris L.]]></kwd>
<kwd lng="es"><![CDATA[número de semillas]]></kwd>
<kwd lng="es"><![CDATA[número de vainas]]></kwd>
<kwd lng="es"><![CDATA[productividad]]></kwd>
<kwd lng="en"><![CDATA[Phaseolus vulgaris L.]]></kwd>
<kwd lng="en"><![CDATA[number of pods]]></kwd>
<kwd lng="en"><![CDATA[number of seeds]]></kwd>
<kwd lng="en"><![CDATA[productivity]]></kwd>
</kwd-group>
</article-meta>
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