<?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>2305-0683</journal-id>
<journal-title><![CDATA[Investigación Agraria]]></journal-title>
<abbrev-journal-title><![CDATA[Investig. Agrar.]]></abbrev-journal-title>
<issn>2305-0683</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Agrarias, UNA.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2305-06832018000200110</article-id>
<article-id pub-id-type="doi">10.18004/investig.agrar.2018.diciembre.110-117</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Metodologia para o teste de tetrazólio em sementes de feijão-caupi]]></article-title>
<article-title xml:lang="en"><![CDATA[Methodology for tetrazolium in cowpea seeds]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Portela De Oliveira]]></surname>
<given-names><![CDATA[Glauce]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Clarete Camili]]></surname>
<given-names><![CDATA[Elisangela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magalhães Morais]]></surname>
<given-names><![CDATA[Otoniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Mato Grosso  ]]></institution>
<addr-line><![CDATA[Rondonópolis Mato Grosso]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Federal de Mato Grosso Faculdade de Agronomia e Zootecnia (FAAZ/UFMT) Departamento de Fitotecnia e Fitossanidade]]></institution>
<addr-line><![CDATA[Cuiabá Mato Grosso]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade Estadual do Sudoeste da Bahia Departamento de Fitotecnia e Zootecnia (DFZ/UESB) ]]></institution>
<addr-line><![CDATA[Vitória da Conquista Bahia]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>20</volume>
<numero>2</numero>
<fpage>110</fpage>
<lpage>117</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2305-06832018000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2305-06832018000200110&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2305-06832018000200110&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO O objetivo foi determinar o método de coloração, quanto ao tempo e concentração da solução, mais eficiente para avaliação da qualidade fisiológica de sementes de feijão-caupi (V. unguiculata) pelo teste de tetrazólio. Foram avaliados dois lotes de sementes de duas cultivares de feijão-caupi, BRS Guariba e BRS Novaera. O teste de tetrazólio foi realizado para sementes de cada lote e cultivar, as quais foram submetidas à solução de tetrazólio nas concentrações de 0,075%, 0,25% e 0,5% por 3 e 4 h, em incubadora tipo BOD a 35°C, na ausência de luz. As sementes foram avaliadas quanto à uniformidade e intensidade da coloração apresentadas pelos tecidos, sendo classificadas em: coloração fraca, coloração adequada ou coloração forte. Para avaliar a eficiência do teste de tetrazólio, as sementes das duas cultivares e os respectivos lotes foram submetidos aos testes de germinação e vigor. As médias observadas nos testes foram comparadas pelo teste de Tukey (p&lt;0,05) e calculados os coeficientes de correlação simples de Pearson (r). Observou-se que o teste de tetrazólio é eficiente para a classificação do vigor de sementes de feijão-caupi e posterior imersão em solução de tetrazólio na concentração de 0,075%, por um período de 4 h a 35ºC.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The objective of this study was to determine the most efficient method for the evaluation of the physiological quality of cowpea (V. unguiculata) seeds by the tetrazolium test. We evaluated two seed lots of two cowpea cultivars, BRS Guariba and BRS Novaera. The tetrazolium test was performed for each batch of seeds and cultivating, which underwent tetrazolium solution at concentrations of 0.075%, 0.25% and 0.5% for 3-4 h in BOD incubator at 35°C in absence of light. The seeds were evaluated for uniformity and intensity of color presented by the tissues, being classified as: weak staining, suitable staining or strong staining. To evaluate the efficiency of the tetrazolium test, seeds of both cultivars and their lots were submitted to the germination and vigor tests. The mean values found in the tests were compared by Tukey test (p &lt;0.05) and calculated the simple correlation coefficients of Pearson (r). It was observed that the tetrazolium is effective to classify the force of cowpea seeds under subsequent immersion in tetrazolium solution at a concentration of 0.075%, for a period 4 h at 35°C.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Vigna unguiculata]]></kwd>
<kwd lng="pt"><![CDATA[viabilidade]]></kwd>
<kwd lng="pt"><![CDATA[vigor]]></kwd>
<kwd lng="en"><![CDATA[Vigna unguiculata]]></kwd>
<kwd lng="en"><![CDATA[viability]]></kwd>
<kwd lng="en"><![CDATA[vigor]]></kwd>
</kwd-group>
</article-meta>
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