<?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>S2007-09342016000200375</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Propagación in vitro de guayaba (Psidium guajava L.) a partir de segmentos nodales]]></article-title>
<article-title xml:lang="en"><![CDATA[In vitro propagation of guava (Psidium guajava L.) from nodal segments]]></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[Silos Espino]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valera Montero]]></surname>
<given-names><![CDATA[Luis Lorenzo]]></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[Flores Benítez]]></surname>
<given-names><![CDATA[Silvia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,ITEL  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico El Llano  ]]></institution>
<addr-line><![CDATA[Aguascalientes Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2016</year>
</pub-date>
<volume>7</volume>
<numero>2</numero>
<fpage>375</fpage>
<lpage>386</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342016000200375&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342016000200375&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342016000200375&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este trabajo fue desarrollar y proponer un protocolo para propagar in vitro el guayabo a partir de segmentos nodales de árboles en producción. El material vegetativo de campo se colectó de junio de 2012 a junio de 2013. Para la asepsia y medio de cultivo inicial de los explantes, se realizaron tres experimentos, en el primero se evaluaron cuatro fungicidas, dos sistémicos: Benomyl y Carbendazim, uno de contacto, oxicloruro de cobre y uno natural, fractal, en diferentes concentraciones y combinaciones. En el segundo se probaron diferentes antioxidantes y desinfectantes como: PVP, cloro, etanol, tween, ácido cítrico y ácido ascórbico. En el tercero, para el medio inicial, se evaluó MS suplementado con diferentes combinaciones de PVP, ácido cítrico, ácido ascórbico, nitrato de plata y carbón activado. Para la multiplicación in vitro se evaluaron dos segmentos nodales con diferentes combinaciones de dos reguladores del crecimiento: IBA y BAP. Además se identificaron los principales microorganismos contaminantes del medio. De acuerdo con los resultados obtenidos, el mejor tratamiento con fungicidas fue la combinación de: Benomyl 2 g L-1, Carbendazim 2 g L-1 y oxicloruro de cobre 1 g L-1. El mejor tratamiento de antioxidantes y desinfectantes fue PVP 0.5%, cloro 5% y 3 gotas de tween 20. Aunque no hubo diferencias estadísticas, el mejor medio de cultivo inicial fue: MS + PVP 0.75 g L-1 y carbón activado 2 g L-1. Para multiplicación in vitro, el mejor tratamiento fue: segmento nodal uno en MS + 0.5 mg L-1 BAP + 0.1 mg L-1 IBA, con brotes de 1.48 cm y tres hojas por brote. Se identificaron dos hongos contaminantes del medio de cultivo: Aspergillus sp. y Alternaria sp. A partir de los resultados obtenidos, se propone un protocolo completo para la multiplicación in vitro del guayabo, a partir de segmentos nodales de árboles en producción.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The aim of this work was to develop and propose a protocol to propagate guava in vitro from nodal segments of trees in production. The plant material was collected field june 2012 to june 2013. For the cleanliness and initial culture medium of explants, three experiments were performed in the first four fungicides, two systemic evaluated: Benomyl and Carbendazim, one of contact, copper oxychloride and one natural, fractal, in different concentrations and combinations. PVP, chlorine, ethanol, tween, citric acid and ascorbic acid: In the second and different antioxidants were tested as disinfectants. In the third to the initial medium we were evaluated MS supplemented with different combinations of PVP, citric acid, ascorbic acid, silver nitrate and activated carbon. For in vitro multiplication two nodal segments with different combinations of two growth regulators were evaluated: IBA and BAP. Besides the main environmental contaminating microorganisms were identified. According to the results, the best fungicide treatment was a combination of: Benomyl 2 g L-1, Carbendazim 2 g L-1 and 1 g copper oxychloride L-1. The best treatment of antioxidants and disinfectants was PVP 0.5%, chlorine 5% and 3 drops of tween 20. Although there were no statistical differences, the best initial culture medium was: MS + PVP 0.75 g L-1 and activated carbon 2 g L-1. For in vitro multiplication, the best treatment was: one nodal segment MS + 0.5 mg L-1 BAP + 0.1 mg L-1 IBA, with outbreaks of 1.48 cm and three leaves per shoot. Aspergillus sp., and Alternaria sp. two fungal contaminants of the culture medium were identified. From the results obtained, a complete protocol for in vitro multiplication guava, from nodal segments trees in production is proposed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Psidium guajava L.]]></kwd>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[propagación in vitro]]></kwd>
<kwd lng="es"><![CDATA[oxidación]]></kwd>
<kwd lng="es"><![CDATA[regeneración]]></kwd>
<kwd lng="es"><![CDATA[segmento nodal]]></kwd>
<kwd lng="en"><![CDATA[Psidium guajava L.]]></kwd>
<kwd lng="en"><![CDATA[in vitro propagation]]></kwd>
<kwd lng="en"><![CDATA[nodal segment]]></kwd>
<kwd lng="en"><![CDATA[oxidation]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="en"><![CDATA[regeneration]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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