<?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>0258-5936</journal-id>
<journal-title><![CDATA[Cultivos Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[cultrop]]></abbrev-journal-title>
<issn>0258-5936</issn>
<publisher>
<publisher-name><![CDATA[Ediciones INCA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0258-59362023000200005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Definición del marco óptimo de plantación del híbrido de maíz H-Ame15, en época seca]]></article-title>
<article-title xml:lang="en"><![CDATA[Definition of the optimal planting spacing for the hybrid H-Ame15 under dry period]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Téllez-Rodríguez]]></surname>
<given-names><![CDATA[Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morán-Bertot]]></surname>
<given-names><![CDATA[Ivis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Riverón-Hernández]]></surname>
<given-names><![CDATA[Albis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinoza-Delgado]]></surname>
<given-names><![CDATA[Davel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Ramírez]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Isidrón-Pérez]]></surname>
<given-names><![CDATA[Miriam]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pino-Blanco]]></surname>
<given-names><![CDATA[Yulexis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Santos]]></surname>
<given-names><![CDATA[Leyenis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laguna Lezcano]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Ingeniería Genética y Biotecnología  ]]></institution>
<addr-line><![CDATA[Playa La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Agraria de La Habana &#8220;Fructuoso Rodríguez Pérez&#8221;  ]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Producción y Desarrollo Agrofar  ]]></institution>
<addr-line><![CDATA[Santo Domingo Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>44</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0258-59362023000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0258-59362023000200005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0258-59362023000200005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El cultivo del híbrido simple H-Ame15 a gran escala, constituye una alternativa para el manejo eficiente del maíz (Zea mays L.) en campo, al contener eventos transgénicos, que aportan resistencia a Spodoptera frugiperda Smith y tolerancia a herbicidas a base de glufosinato de amonio. El objetivo de este trabajo es definir el marco de plantación óptimo para este híbrido. Para ello, se evaluó el comportamiento morfoagronómico del cultivo a 0,7m de distancia entre surcos y 0,15 m, 0,20 m y 0,25 m de separación entre plantas. El ensayo se realizó durante el período de seca, comprendido entre 2019 y 2020. Con el aumento de la densidad de plantas disminuyó el diámetro del tallo, esto generó el patrón de esbeltez de las plantas descrito por la literatura. En las mazorcas no varió el número de hileras, sin embargo, disminuyó el número de granos por hilera, lo cual caracteriza al híbrido con el patrón flexible de la mazorca. Esta variación en la morfología de las mazorcas afectó el potencial productivo de las plantas de manera individual, a pesar de ello, el rendimiento potencial se incrementó, por el aporte de un mayor número de plantas por hectárea: 14,74 t ha-1 a 0,15 m; 12,83 t ha-1 a 0,20 m y 10,94 t ha-1 a 0,25 m. Se determinó que 0,7 m x 0,20 m (71 000 plantas ha-1), fue el marco de plantación apropiado para esta época y se logró el mejor balance entre producción y porcentaje de pérdida, causada por factores ambientales como enfermedades estacionales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The cultivation of the simple hybrid of corn H-Ame15 on a large scale, constitutes an alternative for an efficient management of corn (Zea mays) in the field, as it contains transgenic events, which provide resistance to (Spodoptera frugiperda Smith) and tolerance to herbicides based on glufosinate ammonium. The objective of this work was to consolidate the productivity of the hybrid, optimizing its density in the field. For this, the morphological evaluation of the crop was carried out under three plantation spacing: 0.7m x 0.15m; 0.7m x 0.20m and 0.7m x 0.25m, in the period between December 2019 and April 2020 in an experimental plot. The higher population density caused a decrease in the stem diameter; this generated the slenderness pattern of the plants described in the literature. Cobs did not change the number of rows with increasing density, however the number of grains per row decreased, which affected the productive potential of the plants individually. This variation in the morphology of the ear allowed to characterize this hybrid with the flexible pattern of the cob. Despite this, the potential yield increased, due to the contribution of a greater number of plants per hectare: 14.74 t ha-1 at 0.7mx 0.15m, 12.83 t ha-1 at 0.7m x 0.20m and 10.94 tha-1 at 0.7m x 0.25m. It was determined that 0.7mx0.20m (71000 plants ha-1), was the most appropriate plantation framework for this time, since with this distribution the best balance between production and percentage of loss caused by environmental factors such as seasonal diseases was achieved.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[densidad de plantación]]></kwd>
<kwd lng="es"><![CDATA[rendimiento]]></kwd>
<kwd lng="es"><![CDATA[Zea mays]]></kwd>
<kwd lng="en"><![CDATA[Zea mays L.]]></kwd>
<kwd lng="en"><![CDATA[plant density]]></kwd>
<kwd lng="en"><![CDATA[yield]]></kwd>
</kwd-group>
</article-meta>
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