<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342024000700109</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v15i7.3511</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[La luz promueve la bulbificación in vitro de Sprekelia formosissima]]></article-title>
<article-title xml:lang="en"><![CDATA[Light promotes in vitro bulbing of Sprekelia formosissima]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Uribe-Treviño]]></surname>
<given-names><![CDATA[Agustín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pedraza-Santos]]></surname>
<given-names><![CDATA[Martha Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado-Valerio]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Palacios]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Hernández]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Antonio-López]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo Facultad de Agrobiología &#8220;Presidente Juárez&#8221; ]]></institution>
<addr-line><![CDATA[Uruapan Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo Instituto de Investigaciones Pecuarias y Forestales ]]></institution>
<addr-line><![CDATA[Tarímbaro Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Morelia Tecnológico Nacional de México ]]></institution>
<addr-line><![CDATA[Morelia Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Colegio de Postgraduados Campus Puebla ]]></institution>
<addr-line><![CDATA[San Pedro Cholula Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>11</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>11</month>
<year>2024</year>
</pub-date>
<volume>15</volume>
<numero>7</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342024000700109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342024000700109&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342024000700109&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Sprekelia formosissima es una geófita ornamental que se propaga por división de bulbos ya que su obtención por semilla lleva hasta cuatro años. La micropropagación es una opción para producir bulbos que crecen y acumulan carbohidratos de manera diferenciada bajo distintas condiciones de luz y en función de la especie. En 2022, se evaluó el crecimiento in vitro de bulbos de S. formosissima con 0, 30, 60, 120 y 130 µmol m-2 s-1 de luz. Los bulbos se cultivaron en medio MS con 4% de sacarosa y fotoperiodo de 16 h. A los 80 días se midió número, color, clorofila y longitud de hojas, peso fresco y seco de hojas y bulbos, ancho y largo de bulbos. Se midieron los azúcares solubles totales, azúcares reductores, sacarosa, fructosa en hojas y además almidón en bulbos. Para determinar almidón se probaron 4 y 8 U de amiloglucosidasa y &#945;-amilasa con 6, 12 y 24 h de digestión. Con los datos se realizó un ANDEVA y la prueba de Tukey (p&lt; 0.05). Con 130 µmol m-2 s-1 aumentó el peso fresco, seco y diámetro de bulbo, número de hojas, almidón en bulbos, clorofila a, b y total en 152, 433, 44, 87 y 251% y 55, 35 y 58 veces, respectivamente, en comparación con los datos registrados en la oscuridad. La intensidad alta de luz in vitro incrementa la biomasa y almidón en bulbos de S. formosissima que se estimó con 8 U de amiloglucosidasa y &#945;-amilasa y 24 h de digestión.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Sprekelia formosissima is an ornamental geophyte that is propagated by bulb division since it takes up to four years to obtain it by seed. Micropropagation is an option to produce bulbs that grow and accumulate carbohydrates in a differentiated way under different light conditions and depending on the species. In 2022, the in vitro growth of S. formosissima bulbs with 0, 30, 60, 120, and 130 &#956;mol m-2 s-1 of light was evaluated. The bulbs were grown in MS medium with 4% sucrose and a photoperiod of 16 h. At 80 days, number, color, chlorophyll and length of leaves, fresh and dry weight of leaves and bulbs, and width and length of bulbs were measured. Total soluble sugars, reducing sugars, sucrose, fructose in leaves and starch in bulbs were evaluated. To determine starch, 4 and 8 U of amyloglucosidase and &#945;-amylase were tested, with 6, 12 and 24 h of digestion. The data were used to perform an Anova and a Tukey test (p&lt; 0.05). With 130 &#956;mol m-2 s-1, the fresh and dry weight and diameter of the bulb, number of leaves, starch in bulbs, and chlorophyll a, b and total increased by 152, 433, 44, 87, and 251% and 55, 35, and 58 times, respectively, compared to the data recorded in the dark. The high intensity of light in vitro increases the biomass and starch in S. formosissima bulbs, which was estimated with 8 U of amyloglucosidase and &#945;-amylase and 24 h of digestion.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[carbohidratos]]></kwd>
<kwd lng="es"><![CDATA[intensidad de luz]]></kwd>
<kwd lng="es"><![CDATA[micropropagación de geófitas]]></kwd>
<kwd lng="en"><![CDATA[carbohydrates]]></kwd>
<kwd lng="en"><![CDATA[light intensity]]></kwd>
<kwd lng="en"><![CDATA[micropropagation of geophytes]]></kwd>
</kwd-group>
</article-meta>
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