<?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>1405-2768</journal-id>
<journal-title><![CDATA[Polibotánica]]></journal-title>
<abbrev-journal-title><![CDATA[Polibotánica]]></abbrev-journal-title>
<issn>1405-2768</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-27682007000100057</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ESTUDIO MELISOPALINOLÓGICO DE DOS MIELES DE LA PORCIÓN SUR DEL VALLE DE MÉXICO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piedras Gutiérrez]]></surname>
<given-names><![CDATA[Berenice]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiroz García]]></surname>
<given-names><![CDATA[David Leonor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,IPN Escuela Nacional de Ciencias Bioló ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2007</year>
</pub-date>
<numero>23</numero>
<fpage>57</fpage>
<lpage>75</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682007000100057&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682007000100057&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682007000100057&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se analizaron por medios palinológicos dos muestras de miel de dos localidades al sur del Valle de México. Las muestras se procesaron mediante la técnica de acetólisis. Las observaciones se realizaron al microscopio de luz. Se determinaron 19 tipos polínicos, pertenecientes a 15 familias de plantas; sin embargo, los recursos más importantes fueron: Brassica sp., Eucalyptus sp., Asteraceae y Lopezia sp. Algunos de los granos de polen encontrados en las muestras de miel fueron de plantas nectaríferas: Eucalyptus, Salvia, Ipomoea, Lopezia, Pseudobombax, Leguminosas Papilionadas, Euforbiáceas y Rubiáceas, una especie que produce sólo polen: Zea mays y plantas nectaríferaspoliníferas: Brassica, Schinus molle, Asteraceae y Cucurbitáceas. La familia representada con el mayor número de taxa fue la Leguminosae. Por la forma en que utiliza los recursos Apis mellifera L. se considera poliléctica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Pollen was analyzed from two samples of honey from two places in the Valley of Mexico. After being acetolyzed, the samples were observed using light microscopy. Nineteen pollen types were found, belonging to 15 plant families, although the really important sources were: Brassica sp., Eucalyptus sp., Asteraceae and Lopezia sp. Some of the pollen grains found in the honey samples were from nectariferous plants: Eucalyptus, Salvia, Ipomoea, Lopezia, Pseudobombax, papilionoid legumes, Euphorbiaceae and Rubiaceae; one species that produces pollen only: Zea mays; and plants both nectariferous and polleniferous: Brassica, Schinus molle, Asteraceae and Cucurbitaceae. The family represented by the greatest number of species was Leguminosae. The foraging behavior of Apis mellifera L. can be classified as polylectic.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Melisopalinología]]></kwd>
<kwd lng="es"><![CDATA[recursos florales]]></kwd>
<kwd lng="es"><![CDATA[abejas melíferas]]></kwd>
<kwd lng="es"><![CDATA[Valle de México]]></kwd>
<kwd lng="es"><![CDATA[Tláhuac]]></kwd>
<kwd lng="es"><![CDATA[Xochimilco]]></kwd>
<kwd lng="en"><![CDATA[Melissopalynology]]></kwd>
<kwd lng="en"><![CDATA[floral resources]]></kwd>
<kwd lng="en"><![CDATA[honey bees]]></kwd>
<kwd lng="en"><![CDATA[Valley of Mexico]]></kwd>
<kwd lng="en"><![CDATA[Tlahuac]]></kwd>
<kwd lng="en"><![CDATA[Xochimilco]]></kwd>
</kwd-group>
</article-meta>
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