<?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>1405-3195</journal-id>
<journal-title><![CDATA[Agrociencia]]></journal-title>
<abbrev-journal-title><![CDATA[Agrociencia]]></abbrev-journal-title>
<issn>1405-3195</issn>
<publisher>
<publisher-name><![CDATA[Colegio de Postgraduados]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-31952007000700755</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Characterization of onion (Allium cepa L.) varieties based on physical properties and seed performance]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización de variedades de cebolla (Allium cepa L.) basada en características físicas y funcionales de la semilla]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Corredor]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Castañeda]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Campus Montecillo ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>11</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>11</month>
<year>2007</year>
</pub-date>
<volume>41</volume>
<numero>7</numero>
<fpage>755</fpage>
<lpage>762</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-31952007000700755&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-31952007000700755&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-31952007000700755&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Five cultivars (Cristal White Wax, Toro, Red Burgundy, Cojumatlán and Contessa) of onion (Allium cepa L.) were characterized according to: the weight of 100 seeds, germination kinetics, speed germination (T50) and seed protein analysis. Seed of Crystal White Wax was differentiated from the other cultivars by its low weight (0.30 g), since the weight of the rest was 0.40 g. Crystal White Wax had low seed germination (56%) and the highest delay of germination (T50 values were 78 h), while T50 of the rest was 52 h. Protein was isolated from seeds at the precise moment of seed germination. All cultivars were differentiated by their pattern and number of proteins resolved by SDS-PAGE electrophoresis. Toro and Red Burgundy showed the greater difference in the number of proteins detected (27 and 14) whereas Cojumatlán, Contessa and Crystal White Wax had similar numbers. All cultivars shared 12 proteins (44%). According to the coefficient of similarity of Jaccard, Cojumatlán and Crystal White Wax had the greatest degree of relationship (0.95), while Red Burgundy was the least related.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Cinco variedades de cebolla (Allium cepa L.) (Crystal White Wax, Toro, Red Burgundy, Cojumatlán y Contessa) fueron caracterizadas de acuerdo a: peso de 100 semillas, cinética de la germinación, velocidad de germinación (T50) y análisis de proteínas de las semillas. La semilla de Crystal White Wax se diferenció por su menor peso (0.30 g), mientras que el peso del resto de los cultivares fue de 0.40 g. Crystal White Wax tuvo baja germinación (56%) y fue la más tardía (su T50 fue 78 h), mientras que en el resto fue 52 h. La proteína se aisló de las semillas al momento justo de la germinación. Todos los cultivares se diferenciaron por su patrón y número de proteínas detectadas resueltas en geles de poliacrilamida-DSS. Toro y Red Burgundy tuvieron la mayor diferencia en número de proteínas detectadas (27 y 14) mientras que Cojumatlán, Contessa y Cristal White Wax tuvieron números similares. Todos los cultivares compartieron 12 proteínas (44%). De acuerdo con el coeficiente de similitud de Jaccard, Cojumatlán y Crystal White Wax tuvieron el mayor grado de relación (0.95), y Red Burgundy fue el cultivar menos relacionado a los demás.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Allium cepa L.]]></kwd>
<kwd lng="en"><![CDATA[germination kinetics]]></kwd>
<kwd lng="en"><![CDATA[SDS-PAGE]]></kwd>
<kwd lng="en"><![CDATA[T50]]></kwd>
<kwd lng="en"><![CDATA[vigor]]></kwd>
<kwd lng="es"><![CDATA[Allium cepa L.]]></kwd>
<kwd lng="es"><![CDATA[cinética de germinación]]></kwd>
<kwd lng="es"><![CDATA[SDSPAGE]]></kwd>
<kwd lng="es"><![CDATA[T50]]></kwd>
<kwd lng="es"><![CDATA[vigor]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Becerra]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Paredes]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Uso de marcadores bioquímicos y moleculares en estudios de diversidad genética]]></article-title>
<source><![CDATA[Agric. Téc.]]></source>
<year>2000</year>
<volume>60</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>270-81</page-range><publisher-loc><![CDATA[Chile ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cadger]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Hall]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Thousand seed weight of barley seed and its relationships to germination]]></source>
<year>2004</year>
<conf-name><![CDATA[ 27thISTA Congress]]></conf-name>
<conf-loc>Budapest, Hungary </conf-loc>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chauhan]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ram]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mann]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sangwan]]></surname>
<given-names><![CDATA[V. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molecular weight analysis of seed proteins of forage sorghum (Sorghum bicolor (L) Moench)]]></article-title>
<source><![CDATA[Seed Sci. Tech.]]></source>
<year>2002</year>
<volume>30</volume>
<page-range>11-6</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cook]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Varietal identification of crop plants]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Skerrit]]></surname>
<given-names><![CDATA[I. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Apples]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[New Diagnostics in Crop Science]]></source>
<year>1995</year>
<page-range>33-63</page-range><publisher-loc><![CDATA[UK ]]></publisher-loc>
<publisher-name><![CDATA[CAB international]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Draper]]></surname>
<given-names><![CDATA[S. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Keefe]]></surname>
<given-names><![CDATA[P. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Machine vision for the characterization and identification of cultivars]]></article-title>
<source><![CDATA[Plant Varieties and Seeds]]></source>
<year>1989</year>
<volume>2</volume>
<page-range>53-62</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Drzewiecki]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Similarities and differences between Amaranthus species and cultivars and estimation of outcrossing rate on the basis of electrophoretic separations of urea-soluble seeds proteins]]></article-title>
<source><![CDATA[Euphytica]]></source>
<year>2001</year>
<volume>119</volume>
<page-range>279-87</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[El-Bendary]]></surname>
<given-names><![CDATA[A. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Mabrouk]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Metainy]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Peroxidase isozyme variants as genetic markers for early evaluation of Fe-efficiency and Fe-nutritional status in maize lines]]></article-title>
<source><![CDATA[Field Crops Res.]]></source>
<year>1998</year>
<volume>59</volume>
<page-range>181-5</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[J. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Alvarez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Fuello]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Roca]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Giradez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of outcrossing rate of Phaseolus vulgaris L. Using seed protein markers]]></article-title>
<source><![CDATA[Euphytica]]></source>
<year>2000</year>
<volume>113</volume>
<page-range>259-63</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hahn]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Schöberlein]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Characterization and identification of Festulolium hybrids by electrophoresis of seed proteins]]></article-title>
<source><![CDATA[Seed Sci. Tech.]]></source>
<year>1999</year>
<volume>27</volume>
<page-range>525-42</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<collab>International Seed Testing Association</collab>
<article-title xml:lang=""><![CDATA[International Rules for Seed Testing]]></article-title>
<source><![CDATA[Seed Sci. and Tech.]]></source>
<year>1999</year>
<numero>27^ssupplement</numero>
<issue>27^ssupplement</issue>
<supplement>supplement</supplement>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Katepa-Mupondwa]]></surname>
<given-names><![CDATA[F. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Barnes]]></surname>
<given-names><![CDATA[D. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith Jr.]]></surname>
<given-names><![CDATA[S. R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of parent and temperature during pollination on alfalfa seed weight and number of seeds per pod]]></article-title>
<source><![CDATA[Can. J. Plant Sci.]]></source>
<year>1996</year>
<volume>76</volume>
<page-range>259-62</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Laemmly]]></surname>
<given-names><![CDATA[U. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cleavage of structural proteins during the assembly of the head of bacteriophage T4]]></article-title>
<source><![CDATA[Nature]]></source>
<year>1970</year>
<volume>227</volume>
<page-range>680-5</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lowry]]></surname>
<given-names><![CDATA[L. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rosenbrough]]></surname>
<given-names><![CDATA[N. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Farr]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Randall]]></surname>
<given-names><![CDATA[R. J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Protein measure with folin phenol reagent]]></article-title>
<source><![CDATA[J. Biol. Chem.]]></source>
<year>1951</year>
<volume>193</volume>
<page-range>265-75</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morales]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Medina M.]]></surname>
<given-names><![CDATA[D. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Yaguache C.]]></surname>
<given-names><![CDATA[B. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Diversidad genética, filogenética y distribución geográfica del genero Vasconcellea en el Sur de Ecuador]]></article-title>
<source><![CDATA[Lyonia]]></source>
<year>2004</year>
<volume>7</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>15-27</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Moroto B.]]></surname>
<given-names><![CDATA[J. V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Horticultura Herbácea Especial]]></source>
<year>1989</year>
<publisher-loc><![CDATA[Madrid, España ]]></publisher-loc>
<publisher-name><![CDATA[Ed. Mundi prensa]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McDonald]]></surname>
<given-names><![CDATA[M. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Hoffmaster]]></surname>
<given-names><![CDATA[A. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Fujimura]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Bennett]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Computer imaging of soybean seedlings for vigor testing]]></article-title>
<source><![CDATA[Seed News]]></source>
<year>2005</year>
<volume>9</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>8-9</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pallares]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferrari]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ritta]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Discrimination between seed storage proteins of Lotus tenius and Lotus corniculatus by P.A.G.E.]]></article-title>
<source><![CDATA[Seed Sci. Tech.]]></source>
<year>2000</year>
<volume>28</volume>
<page-range>769-77</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pinhero]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Rao]]></surname>
<given-names><![CDATA[M. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Paliyath]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Murr]]></surname>
<given-names><![CDATA[D. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Feltcher]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Changes in activities of antioxidant enzymes and their relationships to genetic and paclobutrazol-induced chilling tolerance of maize seedlings]]></article-title>
<source><![CDATA[Plant Phys.]]></source>
<year>1997</year>
<volume>114</volume>
<page-range>95-704</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodo]]></surname>
<given-names><![CDATA[A. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Marcos Filho]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Onion seed vigor in relation to plant growth and yield]]></article-title>
<source><![CDATA[Horticultura Brasileira]]></source>
<year>2003</year>
<volume>21</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>220-6</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<collab>SAS</collab>
<source><![CDATA[Statistical Analysis System for Windows. Release 8.01]]></source>
<year>1999</year>
<publisher-loc><![CDATA[Cary, N. C. USA ]]></publisher-loc>
<publisher-name><![CDATA[SAS Institute Inc.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="">
<collab>SIAP</collab>
<source><![CDATA[Avance de siembras y cosechas ciclo otoño-invierno 2006-2007]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<collab>SNICS</collab>
<source><![CDATA[Lineamientos normativos para la inscripción en el catálogo de variedades factibles de certificación]]></source>
<year>2003</year>
<page-range>1-7</page-range><publisher-loc><![CDATA[México ]]></publisher-loc>
<publisher-name><![CDATA[SNICS]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stonoyanova]]></surname>
<given-names><![CDATA[S. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Kolev]]></surname>
<given-names><![CDATA[K. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Electroforesis de gliadina en la evaluación del germoplasma de trigo búlgaro]]></source>
<year>2001</year>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[TeKrony]]></surname>
<given-names><![CDATA[D. M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Precision is an essential component in seed vigour testing]]></article-title>
<source><![CDATA[Seed Sci. Tech.]]></source>
<year>2003</year>
<volume>31</volume>
<page-range>435-47</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[van de Vooren]]></surname>
<given-names><![CDATA[J. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Heijden]]></surname>
<given-names><![CDATA[G. W. A. M. van der]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Meassuring the size of french beans with image analysis]]></article-title>
<source><![CDATA[Plant Varieties and Seeds]]></source>
<year>1993</year>
<volume>6</volume>
<page-range>47-53</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[X. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Knoblauch]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Leist]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Varietal discrimination of tomato (Lycopersicon esculentum L.) by ultrathin-layer isoelectric focusing of seed protein]]></article-title>
<source><![CDATA[Seed Sci. Tech.]]></source>
<year>2000</year>
<volume>28</volume>
<page-range>521-6</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
