<?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>S2007-09342018000601123</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v9i6.1578</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Respuesta del clon mexicano de papa 99-39 a potasio en hidroponía e invernadero]]></article-title>
<article-title xml:lang="en"><![CDATA[Response of the Mexican clone of potato 99-39 to potassium in hydroponics and greenhouse]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Gutiérrez]]></surname>
<given-names><![CDATA[Francisco Xavier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores López]]></surname>
<given-names><![CDATA[Román]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora Herrera]]></surname>
<given-names><![CDATA[Martha Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Franco Mora]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México  ]]></institution>
<addr-line><![CDATA[Tenancingo Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INIFAP Sitio Experimental Metepec ]]></institution>
<addr-line><![CDATA[ Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del Estado de México Centro de Investigación y Estudios Avanzados en Fitomejoramiento-Facultad de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Toluca Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>6</numero>
<fpage>1123</fpage>
<lpage>1135</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342018000601123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342018000601123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342018000601123&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Con el propósito de determinar el efecto y la dosis óptima de potasio en la producción de minitubérculos del clon mexicano de papa 99-39, se establecieron experimentos en julio y septiembre de 2015, donde se probaron concentraciones de 0 (testigo absoluto), 150, 250 (testigo comercial), 350, 450 y 550 mg L-1 en solución nutritiva en sistema hidropónico. Los resultados indicaron que la mayor altura de planta e índice de área foliar se encontraron en los tratamientos de mayor concentración de K. La dosis de 350 mg L-1 de K produjo 19% más tubérculos de diámetro igual o mayor de 15 mm por planta que el testigo comercial y 194% más que el testigo absoluto. La ecuación de segundo orden (R2= 0.94) permitió estimar que la dosis óptima para el clon de papa 99-39 fue de 400 mg L-1 de potasio, con lo que se puede producir hasta 20.67 minitubérculos por planta. Hubo significancia estadística en la interacción fecha x dosis para producción de tubérculos por planta y para el índice de cosecha, con mayor producción en la siembra de julio que en la época de otoño invierno; contrariamente, se encontró que el índice de cosecha fue mayor en la época de otoño- invierno. Concentraciones elevadas de potasio durante todo el ciclo de cultivo promovieron la producción de un mayor número de tubérculos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In order to determine the effect and optimum dose of potassium in the production of minitubers of the Mexican clone of potato 99-39, experiments were established in July and September 2015, where concentrations of 0 (absolute control), 150, were tested. 250 (commercial control), 350, 450 and 550 mg L-1 in nutrient solution in hydroponic system. The results indicated that the highest plant height and leaf area index were found in the treatments with the highest concentration of K. The dose of 350 mg L-1 of K produced 19% more tubers with a diameter equal to or greater than 15 mm per plant. Than the commercial witness and 194% more than the absolute witness. The second order equation (R2= 0.94) allowed us to estimate that the optimal dose for potato clone 99-39 was 400 mg L-1 potassium, which can produce up to 20.67 minitubers per plant. There was statistical significance in the interaction date x dose for tuber production per plant and for the harvest index, with higher production in july planting than in autumn winter season; conversely, it was found that the harvest index was higher in the autumn-winter season. High concentrations of potassium during the whole crop cycle promoted the production of a greater number of tubers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Solanum tuberosum]]></kwd>
<kwd lng="es"><![CDATA[semilla prebásica]]></kwd>
<kwd lng="es"><![CDATA[solución nutritiva]]></kwd>
<kwd lng="en"><![CDATA[Solanum tuberosum]]></kwd>
<kwd lng="en"><![CDATA[nutritive solution]]></kwd>
<kwd lng="en"><![CDATA[prebasic seed]]></kwd>
</kwd-group>
</article-meta>
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