<?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>S2007-09342017000601315</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Medio de cultivo y sustitutos del agar en el crecimiento in vitro de orquídeas]]></article-title>
<article-title xml:lang="en"><![CDATA[Culture medium and agar substitutes for in vitro growth of orchids]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores-Hernández]]></surname>
<given-names><![CDATA[Luis Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robledo-Paz]]></surname>
<given-names><![CDATA[Alejandrina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jimarez-Montiel]]></surname>
<given-names><![CDATA[María Josefina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>6</numero>
<fpage>1315</fpage>
<lpage>1328</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342017000601315&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342017000601315&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342017000601315&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El cultivo in vitro es una técnica que ha permitido la propagación de distintas especies de orquídeas, pero el lento crecimiento de este grupo de plantas, así como el costo de las sales minerales y del agente gelificante (agar) empleados en los medios de cultivo, pueden limitar su aplicación. El objetivo del presente trabajo, fue conocer el efecto de la composición del medio de cultivo y el uso de sustratos como sustitutos del agar en el crecimiento in vitro de Laelia anceps Lindl. y Epidendrum sp. Brotes adventicios de ambas especies se cultivaron in vitro en distintas mezclas de sustratos (perlita, tezontle y fibra de coco) y agar con diferentes concentraciones de las sales basales de Murashige y Skoog (50 y 100%) y ácido giberélico (AG3) (0 y 1 mg L-1) para evaluar su longitud, número de hojas, número de raíces y peso fresco en un diseño experimental con tres factores y 15 repeticiones, cada repetición consistio en un frasco con 5 brotes adventicios. El comportamiento in vitro, estuvo en función del genotipo; L. anceps Lindl. respondió mejor que Epidendrum sp. Los brotes crecidos sobre perlita-tezontle o fibra de coco-tezontle, y medios con sales al 50% y AG3 no mostraron diferencias significativas en cuanto a su longitud, número de hojas, número de raíces y peso fresco, con respecto a aquellos que lo hicieron en agar, sales al 100% y sin AG3. Los medios de cultivo con sales diluidas sin AG3 y sustratos como sustitutos del agar, permitieron el crecimiento in vitro de las plantas de L. anceps Lindl. y Epidendrum sp. con una reducción significativa del 60% de los costos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The in vitro culture is a technique that has allowed the spread of different species of orchids, but the slow growth of this group of plants, and the cost of the minerals and the gelling agent (agar) used in the culture media, can limit its application. The aim of this research was to understand the effect of the composition of the culture medium and the use of substrates as agar substitutes for in vitro growth of Laelia anceps Lindl. And Epidendrum sp. Adventitious buds of both species were cultured in vitro in different substrates mixtures (perlite, volcanic rock and coir) and agar with different concentrations of Murashige and Skoog basal salts (50 and 100%) and gibberellic acid (AG3) (0 and 1 mg L-1) to evaluate its length, number of leaves, number of roots and fresh weight in an experimental design with three factors and 15 repetitions, each repetition consisted in a flask with 5 adventitious shoots. The in vitro behavior was based on the genotype L. anceps Lindl. that responded better tan Epidendrum sp. Outbreaks grown on perlite-volcanic rock or coir-volcanic rock, and médiums with 50% salts and AG3 showed no significant difference in terms of length, number of leaves, number of roots and fresh weight, with respect to those grown in agar, 100% salts without AG3. The culture médium with diluted with salts without AG3 and substrates as substitutes for agar, allowed the in vitro growth of L. plants anceps Lindl. And Epidendrum sp. plants with a significant 60% costs reduction.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Laelia anceps Lindl.]]></kwd>
<kwd lng="es"><![CDATA[Epidendrum sp.]]></kwd>
<kwd lng="es"><![CDATA[ácido giberélico]]></kwd>
<kwd lng="es"><![CDATA[cultivo in vitro]]></kwd>
<kwd lng="es"><![CDATA[medio de cultivo]]></kwd>
<kwd lng="es"><![CDATA[sustratos]]></kwd>
<kwd lng="en"><![CDATA[Laelia anceps Lindl]]></kwd>
<kwd lng="en"><![CDATA[Epidendrum sp.]]></kwd>
<kwd lng="en"><![CDATA[culture medium substrates]]></kwd>
<kwd lng="en"><![CDATA[gibberellic acid]]></kwd>
<kwd lng="en"><![CDATA[in vitro culture]]></kwd>
</kwd-group>
</article-meta>
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