<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982017000300391</article-id>
<article-id pub-id-type="doi">10.17129/botsci.887</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Polymorphism analysis in some Algerian Opuntia species using morphological and phenological UPOV descriptors]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hadjkouider]]></surname>
<given-names><![CDATA[Boubakr]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Boutekrabt]]></surname>
<given-names><![CDATA[Ammar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lallouche]]></surname>
<given-names><![CDATA[Bahia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lamine]]></surname>
<given-names><![CDATA[Salim]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zoghlami]]></surname>
<given-names><![CDATA[Néjia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Saad Dahlab University Faculty of Nature and Life Sciences ]]></institution>
<addr-line><![CDATA[Blida ]]></addr-line>
<country>Algeria</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Mohamed Boudiaf University Faculty of Science ]]></institution>
<addr-line><![CDATA[M&#8217;sila ]]></addr-line>
<country>Algeria</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Aberystwyth University  ]]></institution>
<addr-line><![CDATA[Ceredigion ]]></addr-line>
<country>United Kingdom</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Bouira  ]]></institution>
<addr-line><![CDATA[Bouira ]]></addr-line>
<country>Algeria</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Biotechnology Centre of Borj-Cédria  ]]></institution>
<addr-line><![CDATA[Hammam-lif ]]></addr-line>
<country>Tunisia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>95</volume>
<numero>3</numero>
<fpage>391</fpage>
<lpage>400</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982017000300391&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982017000300391&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982017000300391&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  In the present study, we have investigated the morphological variation in a set of five Opuntia species from the Algerian steppes using 49 UPOV descriptors.  Questions:  Which of the 49 descriptors that can be used as powerful estimators of the phenotypic diversity within Opuntia species? How is the morphological diversity patterned in Algerian Opuntia?  Species study/ Mathematical model: Opuntia ficus-indica, Opuntia amycleae, Opuntia streptacantha, Opuntia engelmannii, Opuntia robusta. Principal Components Analysis (PCA) and Hierarchical Cluster Analysis were used.  Study site:  Four counties were studied located in the Algerian steppes. The present research was carried out during 2014.  Methods:  49 descriptors adopted by the International Union for the Protection of New Varieties of Plants (UPOV) were employed in the present research, where cladode, flower and fruit traits were used to determine the overall degree of polymorphism among 5 Opuntia species.  Results:  Principal Component Analysis and Hierarchical Cluster Analysis indicated a consistent differentiation between all studied species. The relative magnitude of the first two PCA eigenvectors showed that 8 descriptors out of 49 were identified as the most important descriptors for the classification of the species. The dendrogram performed on the calculated Euclidean distances between all species pairs allowed the identification of 3 groups, unlike the PCA that identified 4 groups. The species Opuntia ficus-indica and Opuntia amycleae were identified as very close morphologically.  Conclusions:  The present outcome represents a paramount step towards the fast selection of interesting species and for their best management and conservation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  En el presente estudio, hemos investigado la variación morfológica en un conjunto de cinco especies de Opuntia de las estepas argelinas utilizando 49 descriptores UPOV.  Preguntas:  ¿Cuáles de los 49 descriptores que pueden ser utilizados como estimadores poderosos de la diversidad fenotípica dentro de las especies de Opuntia? ¿Cómo se modela la diversidad morfológica en el Opuntia Argelina?  Especie en estudio/ Modelo matemático: Opuntia ficus-indica, Opuntia amycleae, Opuntia streptacantha, Opuntia engelmannii, Opuntia robusta. Análisis de Componentes Principales (PCA) y un Análisis de Agrupamiento Jerárquico fueron usados  Sitio de estudio y fechas:  Se estudiaron cuatro condados situados en la estepa argelina. La presente investigación se realizó durante el año 2014.  Métodos:  En la presente investigación se utilizaron 49 descriptores adoptados por la Unión Internacional para la Protección de las Obtenciones Vegetales (UPOV), en los que se utilizaron características de cladodio, flor y fruto para determinar el grado global de polimorfismo entre 5 especies de Opuntia.  Resultados:  Se aplicó un análisis multivariado, constituido por un análisis de componentes principales (PCA) y un análisis de agrupamiento jerárquico, cuyo resultado indicó una diferenciación consistente entre las especies estudiadas. Con base en la magnitud relativa de los dos primeros eigen-vectores del PCA se seleccionaron 8 de los 49 descriptores morfológicos como los más relevantes para la clasificación de las especies siendo los que más contribuyeron a la variación morfológica detectada. Dichos descriptores pertenecen a la lista de descriptores primarios establecida por la UPOV para la caracterización de Opuntia. El dendrograma obtenido aplicando el método de Ward (1963) para el cálculo de las distancias euclídeanas entre pares de poblaciones permitió identificar tres grupos distintos, mientras que el análisis PCA diferenció cuatro grupos. Por consiguiente, las especies Opuntia ficus-indica y Opuntia amycleae fueron identificadas como especies muy cercanas filogenéticamente.  Conclusiones:  Estos resultados representan un avance crucial para la selección e identificación rápida de poblaciones de interés y una mejora para las estrategias de gestión y conservación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Opuntia]]></kwd>
<kwd lng="en"><![CDATA[diversity]]></kwd>
<kwd lng="en"><![CDATA[multivariate analyses]]></kwd>
<kwd lng="en"><![CDATA[clustering]]></kwd>
<kwd lng="en"><![CDATA[UPOV]]></kwd>
<kwd lng="es"><![CDATA[Opuntia]]></kwd>
<kwd lng="es"><![CDATA[la diversidad]]></kwd>
<kwd lng="es"><![CDATA[análisis multivariado]]></kwd>
<kwd lng="es"><![CDATA[agrupación]]></kwd>
<kwd lng="es"><![CDATA[UPOV]]></kwd>
</kwd-group>
</article-meta>
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