<?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>2007-3380</journal-id>
<journal-title><![CDATA[Revista bio ciencias]]></journal-title>
<abbrev-journal-title><![CDATA[Revista bio ciencias]]></abbrev-journal-title>
<issn>2007-3380</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Nayarit]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-33802019000100120</article-id>
<article-id pub-id-type="doi">10.15741/revbio.06.e548</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[NO3-/NH4+ ratio in plants of bell pepper with early blunting (NO3-/NH4+ ratio in bell pepper)]]></article-title>
<article-title xml:lang="es"><![CDATA[Relación NO3-/NH4+ en plantas de pimiento morrón con despunte temprano (Relación NO3-/NH4+ en pimiento)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Chávez]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bugarín-Montoya]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alejo-Santiago]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez-Rosete]]></surname>
<given-names><![CDATA[C. R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nayarit  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nayarit  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>6</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33802019000100120&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33802019000100120&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33802019000100120&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In the bell pepper (Capsicum annuum L.) production systems, the nutrient solution and the conduction system are primordial to the success of the crop. The objective of the present study, was to evaluate the effect of different NO 3-/NH4+ ratios in the nutrient solution on the growth and fruit yield of two bell pepper varieties, Avante y Tribeka, managed with a system of early blunting of the growth apex above the fourth bifurcation. The experiment was developed under greenhouse conditions and in an open circuit hydroponic system, in containers with a volume of 10 L of substrate of red basaltic volcanic stone. The experimental design utilized was the completely randomized, with a 4x2 factorial arrangement with five repetitions. The different NO3-/NH4+ proportions supplied in the nutrient solution with the same osmotic potential of -0.037 kPa, promoted a differential response in most of the evaluated variables related to fruit yield and accumulated total dry biomass. The best response in the studied variables was obtained with the addition of 10% of NH4+ which is equivalent to 0.75 meq L-1 in the ratio of cations. However, the concentration of ammonium in the nutrient solution had an interactive effect with the pepper varieties Avante and Tribeka in the quantified variables.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En los sistemas de producción de pimiento (Capsicum annuum L.), la composición de la solución nutritiva y el sistema de conducción de las plantas, son primordiales para el éxito del cultivo. El objetivo del presente estudio, fue evaluar el efecto de distintas relaciones NO3-/NH4+ en la solución nutritiva de Steiner en el crecimiento y rendimiento de fruto de dos variedades de pimiento morrón, Avante y Tribeka, manejadas con un sistema de despunte temprano de los ápices de crecimiento por encima de la cuarta bifurcación del tallo. El experimento fue desarrollado en condiciones de invernadero y en sistema hidropónico de circuito abierto, en contenedores con un volumen de 10 L de sustrato de roca volcánica basáltica roja. Se utilizó un diseño experimental completamente al azar, con arreglo factorial 4x2 con cinco repeticiones. Las diferentes proporciones NO3-/NH4+ suministradas en la solución nutritiva con un mismo potencial osmótico de - 0.037 kPa, promovieron una respuesta diferencial en la mayoría de las variables evaluadas relacionadas con el rendimiento de fruto y biomasa seca total acumulada. La mejor respuesta en las variables estudiadas se obtuvo con la adición de 10 % de NH4+ que equivale a 0.75 meq L-1 en la relación de cationes. De igual manera, la concentración de amonio en la solución nutritiva tuvo un efecto interactivo con las variedades de pimiento Avante y Tribeka en las variables cuantificadas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Bell Pepper]]></kwd>
<kwd lng="en"><![CDATA[nitrate/ammonium]]></kwd>
<kwd lng="en"><![CDATA[early blunting]]></kwd>
<kwd lng="es"><![CDATA[Pimiento morrón]]></kwd>
<kwd lng="es"><![CDATA[nitrato/amonio]]></kwd>
<kwd lng="es"><![CDATA[despunte temprano]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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