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Tracing back the origin of pumpkins (Cucurbita pepo ssp. pepo L.) in Mexico

Castellanos Morales, Gabriela [autora] | Ruiz Mondragón, Karen Y [autora] | Hernández Rosales, Helena S [autora] | Sánchez de la Vega, Guillermo [autor] | Gámez Tamariz, Niza [autora] | Aguirre Planter, Erika [autora] | Montes Hernández, Salvador [autor] | Lira Saade, Rafael [autor] | Eguiarte Fruns, Luis Enrique [autor].
Tipo de material: Artículo
 en línea Artículo en línea Tema(s): Cucurbita pepo | Variación genética | Hibridación | MicrosatélitesTema(s) en inglés: Cucurbita pepo | Genetic variation | Hybridization | MicrosatellitesDescriptor(es) geográficos: México Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Proceedings of the Royal Society B: Biological Sciences. Volumen 286, número 1908 (July 2019), páginas 1-9. --ISSN: 1471-2954Número de sistema: 60435Resumen:
Inglés

Cucurbita pepois an economically important crop, which consists of cultivated C. pepo ssp. pepo, and two wild taxa (C. pepo ssp. fraterna and C. pepo ssp. ovifera). We aimed at understanding the domestication and thediversity of C. pepo in Mexico. We used two chloroplast regions and nine nuclear microsatellite loci to assess the levels of genetic variation and structure for C. pepo ssp. pepo's landraces sampled in 13 locations in Mexico, five improved varieties, one C. pepo ssp. fraterna population and ornamental C. pepo ssp. ovifera. We tested four hypotheses regarding the origin of C. pepo ssp. pepo's ancestor through approximate Bayesian computation: C. pepo ssp. ovifera as the ancestor; C. pepo ssp. fraternaas the ancestor; an unknown extinct lineage as the ancestor; and C. pepo ssp. pepo as hybrid from C. pepo ssp. ovifera and C. pepo ssp. fraterna ancestors. Cucurbita pepo ssp. pepo showed high genetic variation and low genetic differentiation. Cucurbita pepo ssp. fraterna and C. pepo ssp. pepo shared two chloroplast haplotypes. The three subspecies were well differentiated for microsatellite loci. Cucurbita pepo ssp. fraterna was probably C. pepo ssp. pepo's wild ancestor, but subsequent hybridization between taxa complicate defining C. pepo ssp. pepo's ancestor.

Recurso en línea: https://royalsocietypublishing.org/doi/10.1098/rspb.2019.1440
Lista(s) en las que aparece este ítem: Mujeres en la ciencia-ECOSUR Villahermosa
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Cucurbita pepois an economically important crop, which consists of cultivated C. pepo ssp. pepo, and two wild taxa (C. pepo ssp. fraterna and C. pepo ssp. ovifera). We aimed at understanding the domestication and thediversity of C. pepo in Mexico. We used two chloroplast regions and nine nuclear microsatellite loci to assess the levels of genetic variation and structure for C. pepo ssp. pepo's landraces sampled in 13 locations in Mexico, five improved varieties, one C. pepo ssp. fraterna population and ornamental C. pepo ssp. ovifera. We tested four hypotheses regarding the origin of C. pepo ssp. pepo's ancestor through approximate Bayesian computation: C. pepo ssp. ovifera as the ancestor; C. pepo ssp. fraternaas the ancestor; an unknown extinct lineage as the ancestor; and C. pepo ssp. pepo as hybrid from C. pepo ssp. ovifera and C. pepo ssp. fraterna ancestors. Cucurbita pepo ssp. pepo showed high genetic variation and low genetic differentiation. Cucurbita pepo ssp. fraterna and C. pepo ssp. pepo shared two chloroplast haplotypes. The three subspecies were well differentiated for microsatellite loci. Cucurbita pepo ssp. fraterna was probably C. pepo ssp. pepo's wild ancestor, but subsequent hybridization between taxa complicate defining C. pepo ssp. pepo's ancestor. eng

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