<?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>S0258-59362022000400007</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto del explante y el picloram en la formación de callos embriogénicos en ñame (Dioscorea cayenensis subsp rotundata Poir), var. &#8216;Blanco de Guinea']]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of explant and picloram on embryogenic callus formation in 'Blanco de Guinea' yam]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Jeréz]]></surname>
<given-names><![CDATA[Yanet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Pérez]]></surname>
<given-names><![CDATA[Jorge Liusvert]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva-Pupo]]></surname>
<given-names><![CDATA[Juan José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Granma Centro de Estudios de Biotecnología Vegetal ]]></institution>
<addr-line><![CDATA[Bayamo Granma]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>43</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0258-59362022000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0258-59362022000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0258-59362022000400007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  La escasez de material vegetal de plantación con calidad fisiológica y sanitaria continúa limitando la producción a gran escala del cultivo del ñame ya que los tubérculos, que constituyen la parte útil de la planta para la alimentación, también tienen que ser utilizados como material vegetal de plantación. El trabajo se desarrolló con el objetivo de evaluar el efecto del tipo de explante y la concentración de Picloram en la formación de callos embriogénicos en Dioscorea cayenensis subsp rotundata var. &#8216;Blanco de Guinea&#8217;. Se tomaron como explantes, segmentos nodales, hojas inmaduras y segmentos de raíces provenientes de plantas in vitro. El medio de cultivo para la formación de callos contenía las sales MS y diferentes concentraciones de Picloram (0; 0,5; 1,0; 1,5; 2,0 mg L-1). Se determinó el porcentaje de formación de callos para cada tipo de explante, el color y consistencia de los callos. Se alcanzó con empleo de 2,0 mg L-1 de Picloram, un 80 % de segmentos nodales con formación de callos embriogénicos, de color pardo-amarillento, consistencia compacta y friables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  The shortage of planting material of physiological and sanitary quality continues to limit the large-scale production of yam cultivation since the tubers, which constitute the useful part of the plant for food, also have to be used as planting plant material. The work was developed with the objective of evaluating the explant type effect and the concentration of picloram in the formation of embryogenic callus in Dioscorea cayenensis subsp rotundata cultivar Blanco de Guinea. Nodal segments, immature leaf and root segments from in vitro plants were taken as explants. The culture medium for callus formation contained the DM salts and different concentrations of Picloram (0; 0.5; 1.0; 1.5; 2.0 mg L-1). The callus formation percentage was determined for each type of explant, the color and consistency of the callus. It was achieved with the use of 2.0 mg L-1 of Picloram, 80% of nodal segments with embryogenic callus formation, yellowish-brown in color, compact and friable.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[auxinas]]></kwd>
<kwd lng="es"><![CDATA[cultivo de tejidos]]></kwd>
<kwd lng="es"><![CDATA[Dioscorea]]></kwd>
<kwd lng="es"><![CDATA[in vitro]]></kwd>
<kwd lng="en"><![CDATA[auxins]]></kwd>
<kwd lng="en"><![CDATA[tissue culture]]></kwd>
<kwd lng="en"><![CDATA[Dioscorea]]></kwd>
<kwd lng="en"><![CDATA[in vitro]]></kwd>
</kwd-group>
</article-meta>
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<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
<name>
<surname><![CDATA[Durango]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tolerancia al estrés salino en plantas de ñame espino (Dioscorea rotundata Poir)]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Durango]]></surname>
<given-names><![CDATA[ED]]></given-names>
</name>
<name>
<surname><![CDATA[de Hoyos]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Gomezcaceres]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
<name>
<surname><![CDATA[Polanco]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrán]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
<name>
<surname><![CDATA[Suárez]]></surname>
<given-names><![CDATA[IE]]></given-names>
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</person-group>
<source><![CDATA[Biotecnología aplicada al sector agropecuario en el departamento de Sucre]]></source>
<year>2019</year>
<page-range>73-94</page-range><publisher-name><![CDATA[Núcleo Innovación y desarrollo de productos biotecnológicos (bioinsumos, bioproductos, bioprocesos) y biorremediación]]></publisher-name>
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</back>
</article>
