<?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>0871-018X</journal-id>
<journal-title><![CDATA[Revista de Ciências Agrárias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. de Ciências Agrárias]]></abbrev-journal-title>
<issn>0871-018X</issn>
<publisher>
<publisher-name><![CDATA[Sociedade de Ciências Agrárias de Portugal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0871-018X2023000200021</article-id>
<article-id pub-id-type="doi">10.19084/rca.31322</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Estudo sobre a origem do enrugamento do miolo da noz]]></article-title>
<article-title xml:lang="en"><![CDATA[Physiological parameters that contribute to Kernel Shrivel in walnuts]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Farinha]]></surname>
<given-names><![CDATA[Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendes]]></surname>
<given-names><![CDATA[Maria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mota Barroso]]></surname>
<given-names><![CDATA[João]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peixe]]></surname>
<given-names><![CDATA[Augusto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dias]]></surname>
<given-names><![CDATA[António]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rato]]></surname>
<given-names><![CDATA[Ana Elisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Évora MED - Mediterranean Institute for Agriculture, Environment and Development &amp; CHANGE - Global Change and Sustainability Institute, Instituto de Investigação e Formação Avançada ]]></institution>
<addr-line><![CDATA[Évora ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de Évora Escola de Ciências e Tecnologia Departamento de Fitotecnia]]></institution>
<addr-line><![CDATA[Évora ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade de Évora Escola de Ciências e Tecnologia Departamento de Engenharia Rural]]></institution>
<addr-line><![CDATA[Évora ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>46</volume>
<numero>2</numero>
<fpage>21</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S0871-018X2023000200021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S0871-018X2023000200021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S0871-018X2023000200021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A Nogueira (Juglans regia L.) é uma das espécies de frutos secos mais consumidas que tem vindo a ganhar importância com a implantação de novos pomares de Norte a Sul do país. A formação incompleta da semente, com o enrugamento do miolo associado, é um dos problemas que deprecia a qualidade e para o qual não existe um controle eficaz por se desconhecer a sua origem. A acumulação das reservas ao nível da semente depende de vários fatores associados à fisiologia da árvore. De forma a perceber a origem desta anomalia fisiológica da noz, foram avaliados vários parâmetros: teor de nutrientes, fibra, gordura e amido. Verificou-se que o amido presente no súber dos ramos, parece ser o parâmetro mais correlacionado com o enrugamento do miolo, observando-se nas variedades menos vigorosas (Lara e Howard) maior teor de amido e aparentemente uma menor predisposição para a ocorrência deste dano. Sendo estas, as variedades que apresentam uma menor percentagem de miolo enrugado, e sendo menos vigorosas parece haver uma correlação entre o nível de radiação intercetado e o desenvolvimento da semente. Assim o maior nível de radiação captado por árvores menos vigorosas parece contribuir para uma menor ocorrência de miolo enrugado.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Walnut tree (Juglans regia L.) is one of the most consumed nut species that has been gaining importance with the implementation of new orchards from north to south of the country. The incomplete formation of the seed (Kernel Shrivel) is one of the problems that most depreciates the quality and for which there isn&#8217;t an effective control due to its unknown origin. The accumulation of seed reserves that result in the development of the seed tissues, depends on several factors associated with the tree's physiology. To understand the origin of this physiological anomaly in the walnuts, several parameters were evaluated: nutrient, fiber, fat and starch content in the branches. It was found that starch content in the branches seems to be the parameter that is most correlated with Kernel shrivel, with the less vigorous varieties (Lara and Howard) having a higher starch content and apparently a lower predisposition to the occurrence of this disorder. As these varieties have a lower percentage of shriveled kernels and are also less vigorous, there seems to be a correlation between the level of radiation received and the development of the seed. Thus, the higher level of radiation absorbed by these trees, may contribute to the lower predisposition of Kernel Shrivel.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Nogueira]]></kwd>
<kwd lng="pt"><![CDATA[hidratos de carbono]]></kwd>
<kwd lng="pt"><![CDATA[nutrição]]></kwd>
<kwd lng="pt"><![CDATA[miolo]]></kwd>
<kwd lng="en"><![CDATA[walnut]]></kwd>
<kwd lng="en"><![CDATA[carbohydrates]]></kwd>
<kwd lng="en"><![CDATA[nutrition]]></kwd>
<kwd lng="en"><![CDATA[kernel shrivel]]></kwd>
</kwd-group>
</article-meta>
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