<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952016000801091</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Recubrimiento de semillas de maíz (Zea mays L.) con quitosano y alginato de sodio y su efecto en el desarrollo radical]]></article-title>
<article-title xml:lang="en"><![CDATA[Maize (Zea mays L.) seed coating with chitosan and sodium alginate and its effect on root development]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña-Datoli]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hidalgo-Moreno]]></surname>
<given-names><![CDATA[C. M. Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Hernández]]></surname>
<given-names><![CDATA[V. Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántar-González]]></surname>
<given-names><![CDATA[E. Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Etchevers-Barra]]></surname>
<given-names><![CDATA[J. Dionisio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Edafología ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados Genética ]]></institution>
<addr-line><![CDATA[Montecillo Estado de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>50</volume>
<numero>8</numero>
<fpage>1091</fpage>
<lpage>1106</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952016000801091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952016000801091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952016000801091&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El tiempo entre la germinación de la semilla y una planta autótrofa es una etapa crítica. Durante este periodo la plántula es susceptible a la competencia con malezas y condiciones edafoclimáticas adversas debido a su reducido sistema radicular y escasa área foliar, como el caso del maíz (Zea mays L.). El uso de agentes bioquímicos como recubrimiento en semillas que promuevan un mayor desarrollo radical en etapas tempranas favorece un buen desarrollo inicial de plántula. Este estudio tuvo como objetivo evaluar el efecto de recubrimientos con quitosano (30 g L-1), alginato de sodio (50 g L-1), ácido salicílico (1x10-3 M) y fertilizantes equivalente a una dosis de N-P2O5-K2O: 26.7-7.5-13.3 kg ha-1, en la emergencia, desarrollo radical, y absorción de agua y nutrimentos, en dos líneas genéticas de maíz con desarrollo radical contrastante. La hipótesis fue que el recubrimiento de semillas con uno o más de estos materiales favorece el estatus hídrico y nutrimental de la plántula, que estimula una eficiente emergencia e incrementa la biomasa radical, la absorción de agua y nutrimentos en maíz. El diseño experimental fue completamente al azar con un arreglo factorial 2x6 (2 líneas genéticas de maíz, 6 recubrimientos) con dos testigos (semilla sin recubrimiento). Las unidades experimentales fueron macetas y la comparación de medias se realizó con la prueba LSD (p&#8804;0.05). Las semillas fueron recubiertas mediante la técnica de gelificación iónica, sembradas en tezontle y regadas con solución nutritiva Steiner sin macronutrimentos en invernadero. La biomasa y concentración nutrimental de las plántulas se evaluaron 30 y 50 d después de la siembra (DDS). La emergencia de las plantas disminuyó por los recubrimientos: quitosano (40 %) y alginato de sodio (14 %). Los fertilizantes y ácido salicílico redujeron la biomasa y longitud radical (30 DDS). No hubo un efecto consistente de los recubrimientos sobre la concentración nutrimental en las plantas de maíz.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Time between seed germination and an autotrophic plant is a critical stage. During this period the seedling is susceptible to competition with weeds and adverse soil and climate change conditions due to its reduced root system and scarce leaf area, as in the case of maize (Zea mays L.). The use of biochemical agents as coating on seeds that promote a greater root development in early stages favors a good initial development of the seedling. This study aimed to evaluate the effect of coatings with chitosan (30 g L-1), sodium alginate (50 g L-1), salicylic acid (1x10-3 M) and fertilizers equivalent to a dose of N-P2O5-K2O: 26.7-7.5-13.3 kg ha-1 in the emergence, root development, and absorption of water and nutrients in two maize genetic lines with contrasting root development. The hypothesis was that the coating of maizeseeds with one or more of these materials favors the water and nutritional status of the seedling, which stimulates an efficient emergence, increases the root biomass and the absorption of water and nutrients. The experimental design was completely randomized with a 2x6 factorial arrangement (2 maize lines, 6 coatings) with two controls (uncoated seed). The experimental units were pots and the comparison of means was performed with the LSD test (p&#8804;0.05). Seeds were covered by the ionic gelation technique sowed in tezontle and irrigated with the Steiner nutrient solution without macronutrients in the greenhouse. The biomass and nutritional concentration of the seedlings were evaluated 30 and 50 d after sowing (DAS). The emergence of plants decreased as a result of the coatings: chitosan (40 %) and sodium alginate (14 %). Fertilizers and salicylic acid reduced biomass and root length (30 DAS). There was no consistent effect of coatings on nutrient concentration in maize plants.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[recubrimiento de semillas]]></kwd>
<kwd lng="es"><![CDATA[gelificación iónica]]></kwd>
<kwd lng="es"><![CDATA[desarrollo radical]]></kwd>
<kwd lng="es"><![CDATA[quitosano]]></kwd>
<kwd lng="es"><![CDATA[alginato de sodio]]></kwd>
<kwd lng="en"><![CDATA[Seeds coating]]></kwd>
<kwd lng="en"><![CDATA[ionic gelling]]></kwd>
<kwd lng="en"><![CDATA[root development]]></kwd>
<kwd lng="en"><![CDATA[chitosan]]></kwd>
<kwd lng="en"><![CDATA[sodium alginate]]></kwd>
</kwd-group>
</article-meta>
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