<?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>0187-7151</journal-id>
<journal-title><![CDATA[Acta botánica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Act. Bot. Mex]]></abbrev-journal-title>
<issn>0187-7151</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C., Centro Regional del Bajío]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-71512024000100108</article-id>
<article-id pub-id-type="doi">10.21829/abm131.2024.2273</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Influencia de la luz en la germinación de semillas de 14 especies de cactáceas del Perú]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of light on seed germination of 14 cactus species from Peru]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jara-Peña]]></surname>
<given-names><![CDATA[Enoc]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quiroz]]></surname>
<given-names><![CDATA[Aarón J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vela Arce]]></surname>
<given-names><![CDATA[Miguer]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Mayor de San Marcos Facultad de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Lima Lima]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Mayor de San Marcos Museo de Historia Natural ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de San Agustín de Arequipa Escuela Profesional de Biología ]]></institution>
<addr-line><![CDATA[Arequipa ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<numero>131</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-71512024000100108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-71512024000100108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-71512024000100108&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes y Objetivos:  En Perú, la conservación de los cactus está amenazada principalmente por la expansión de áreas agrícolas, la minería, la construcción de carreteras, la expansión urbana y el aumento de la población, ocasionando la fragmentación y destrucción de los hábitats. Los ecosistemas perturbados se podrían restaurar mediante el uso de semillas y plántulas de cactáceas. El objetivo de este estudio fue evaluar el efecto de la luz en la germinación de semillas de cactáceas peruanas.  Métodos: Las semillas de cactáceas fueron colectadas en los departamentos Ancash, Apurimac, Arequipa y Huánuco. El experimento se realizó en condiciones controladas mediante un diseño experimental completamente aleatorizado. La germinación de semillas de Austrocylindropuntia floccosa, Armatocereus mataranus subsp. ancashensis, Browningia candelaris, Corryocactus aureus, C. brevistylus subsp. brevistylus, Cumulopuntia ignescens, Espostoa lanata subsp. ruficeps, Haageocereus platinospinus, Lobivia maximiliana subsp. westii, Opuntia macbridei, Trichocereus cuzcoensis, T. santaensis, Tunilla soehrensii y Weberbauerocereus weberbaueri fue evaluada con tratamientos de luz y oscuridad, con cinco repeticiones por tratamiento, cada una. La germinación se realizó en una cámara de crecimiento a una temperatura mínima de 18 y máxima de 25 °C y un fotoperíodo de 12 horas luz /12 horas oscuridad. También se calculó la masa y el tiempo promedio de germinación de semillas y el índice de germinación relativa a la luz.  Resultados clave:  De las 14 especies evaluadas, 12 germinaron con el tratamiento con luz, y dos germinaron en luz y en oscuridad.  Conclusiones: Las semillas con mayor masa fueron las de Austrocylindropuntia floccosa y la menor masa fue registrada en Espostoa lanata subsp. ruficeps. Armatocereus mataranus subsp. ancashensis germinó en 20.80 días, mientras que Weberbauerocereus weberbaueri lo hizo en 10 días. Doce especies son fotoblásticas positivas; en cambio, Armatocereus mataranus subsp. ancashensis y Austrocylindropuntia floccosa son fotoblásticas neutras.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background and Aims:  The main threats to the conservation of cacti in Peru are the expansion of agricultural areas, mining, road construction, urban expansion, and population growth, causing fragmentation and habitat destruction. The disturbed ecosystems could be restored with seeds and seedlings of cacti. This research aimed to evaluate the effect of light on the germination of Peruvian cacti seeds.  Methods:  Cactaceae seeds were collected in the departments of Ancash, Apurimac, Arequipa and Huánuco. The experiment was conducted under controlled conditions using a completely randomized experimental design. Seed germination of the species Austrocylindropuntia floccosa, Armatocereus mataranus subsp. ancashensis, Browningia candelaris, Corryocactus aureus, C. brevistylus subsp. brevistylus, Cumulopuntia ignescens, Espostoa lanata subsp. ruficeps, Haageocereus platinospinus, Lobivia maximiliana subsp. westii, Opuntia macbridei, Trichocereus cuzcoensis, T. santaensis, Tunilla soehrensii and Weberbauerocereus weberbaueri was evaluated with both light and dark treatments, each with five replicates. Incubation took place in a growth chamber under a 12-hour light/12 hours dark photoperiod and temperature regimes ranging from 18 to 25°C. The average seed mass, germination time, and germination index relative to light were also calculated.  Key results:  Of the 14 species evaluated, 12 species germinated with light treatment, and two species germinated in both light and dark.  Conclusions:  The highest seed mass was observed in Austrocylindropuntia floccosa, while the lowest mass was recorded in Espostoa lanata subsp. ruficeps. Armatocereus mataranus subsp. ancashensis exhibited a germination period of 20.80 days, in contrast to Weberbauerocereus weberbaueri, which germinated within 10 days. Twelve species exhibited positive photoblastic responses, while Armatocereus mataranus subsp. ancashensis and Austrocylindropuntia floccosa demonstrated photoblastic neutrality.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cactus peruanos]]></kwd>
<kwd lng="es"><![CDATA[dormancia]]></kwd>
<kwd lng="es"><![CDATA[especies endémicas]]></kwd>
<kwd lng="es"><![CDATA[propagación sexual]]></kwd>
<kwd lng="es"><![CDATA[semillas fotoblásticas]]></kwd>
<kwd lng="en"><![CDATA[dormancy]]></kwd>
<kwd lng="en"><![CDATA[endemic species]]></kwd>
<kwd lng="en"><![CDATA[Peruvian cacti]]></kwd>
<kwd lng="en"><![CDATA[photoblastic seeds]]></kwd>
<kwd lng="en"><![CDATA[sexual propagation]]></kwd>
</kwd-group>
</article-meta>
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