<?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>2079-3480</journal-id>
<journal-title><![CDATA[Cuban Journal of Agricultural Science]]></journal-title>
<abbrev-journal-title><![CDATA[Cuban J. Agric. Sci.]]></abbrev-journal-title>
<issn>2079-3480</issn>
<publisher>
<publisher-name><![CDATA[Editorial del Instituto de Ciencia Animal]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2079-34802019000300331</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Cladode shape analysis of Nopalea cochenillifera (forage cactus Giant Sweet clone) using anatomical landmarks]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis de forma de cladodio del clon de cactus de forraje Giant Sweet (Nopalea cochenillifera) con el uso de puntos de referencia anatómicos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lucena]]></surname>
<given-names><![CDATA[L. R. R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leite]]></surname>
<given-names><![CDATA[M. L. M. V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Simões]]></surname>
<given-names><![CDATA[V. J. L. P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Izidro]]></surname>
<given-names><![CDATA[J. L. P. S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Simplício]]></surname>
<given-names><![CDATA[J. B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal Rural de Pernambuco Unidade Acadêmica de Serra Talhada ]]></institution>
<addr-line><![CDATA[Serra Talhada PE]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>53</volume>
<numero>3</numero>
<fpage>331</fpage>
<lpage>339</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2079-34802019000300331&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2079-34802019000300331&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2079-34802019000300331&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Cactus has high potential as alternative forage in semi-arid regions, due to their great capacity for phytomass production, large water reserves and ease of propagation. For most plants, one of the key factors of biomass production is leaf area, as this determines the capacity for absorption and use of solar radiation in the photosynthetic process. In the forage cactus this function is done instead by cladodes. The objective of this study was to compare the shape of cladodes of Nopalea cochenillifera using anatomical landmarks. The design deployed was randomized blocks with three replicates using the clone of forage cactus, Giant Sweet. To determine the mean shape of cladodes, 174 cladodes were randomly collected, photographed and stored in jpeg image files. The images were marked with 12 anatomic landmarks. Cluster and discriminant and statistical shape analysis were used to evaluate the differences, discriminate and compare groups of cladodes shapes. Grouping method found three cladode groups. For the cladodes, the overall hit rate by discriminant function analysis was 97.7%. Shape analysis, presented high discriminatory power and can be considered as potential descriptors to identify cladodes order, making it unnecessary to go in the field for this process, economize costs and time.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El cactus tiene alto potencial como forraje alternativo en regiones semiáridas, debido a su gran capacidad para la producción de fitomasa, grandes reservas de agua y facilidad de propagación. Para la mayoría de las plantas, uno de los factores clave de la producción de biomasa es el área foliar, ya que esto determina la capacidad de absorción y uso de la radiación solar en el proceso fotosintético. En el cactus de forraje esta función se realiza en las cladodios. El objetivo de este estudio fue comparar la forma de los cladodios de Nopalea cochenillifera utilizando puntos de referencia anatómicos. Se utilizó un diseño de bloques al azar con tres réplicas en el clon de cactus forrajero, &#8220;Giant Sweet&#8221;. Para determinar la forma media de los cladodios, se recolectaron 174 de ellos al azar, se fotografiaron y se almacenaron en archivos de imagen jpeg. Las imágenes se marcaron con 12 indicadores anatómicos. Se usaron análisis de formas estadísticas, discriminantes y de conglomerados para evaluar las diferencias, discriminar y comparar grupos de formas de cladodios. El método de agrupación encontró tres grupos de cladodios. Para los cladodios, la tasa de aciertos general creada por el análisis de la función discriminante fue de 97,7%. El análisis de forma, presentó alto poder discriminante y puede considerarse como descriptores potenciales para identificar el orden de los cladodios, por lo que no es necesario ir al campo, y disminuir costos y tiempo para este proceso.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[cacti]]></kwd>
<kwd lng="en"><![CDATA[multivariate analysis]]></kwd>
<kwd lng="en"><![CDATA[Nopalea cochenillifera]]></kwd>
<kwd lng="en"><![CDATA[shape analysis]]></kwd>
<kwd lng="es"><![CDATA[cactus]]></kwd>
<kwd lng="es"><![CDATA[análisis multivariado]]></kwd>
<kwd lng="es"><![CDATA[Nopalea cochenillifera]]></kwd>
<kwd lng="es"><![CDATA[análisis de formas]]></kwd>
</kwd-group>
</article-meta>
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