PJB-2023-242
Phenotypic and genetic variation in cowpea (Vigna unguiculata (L.) Walp.) landraces cultivated in a traditional system of southeastern Mexico
Amelio Eli Morales-Morales, Rubén Humberto Andueza-Noh, Carlos Juan Alvarado-López, Julia Medrano Macías, José María Tun-Suarez, César Márquez Quiroz and Francisco Alberto Chí Sánchez
Abstract
Cowpea (Vigna unguiculata (L.) Walp.) is an economically important crop due to its nutritional and environmental benefits. In Mexico, farmers in marginal conditions produce most of the crops using landraces classified and informally named based on the physical characteristics of the seed and the growth habit of the plant. The analysis of genetic diversity is a crucial step towards enhancing crop productivity and is accomplished by measuring variation in phenotypic and genotypic traits using morphological and molecular markers. In order to obtain valuable information for cowpea management and conservation, this study assessed the genetic variability and relationships among 14 landraces cultivated in the Yucatan Peninsula, Mexico, based on morphological traits and molecular markers (ISSR). The results contribute to our knowledge of genetic diversity in cultivated landraces of cowpea in the Yucatan Peninsula, including the first report of landraces collected in a previously unexplored region. The results indicated a higher level of diversity among varieties than within varieties. Additionally, most morphological characteristics of cowpea genotypes were very similar. The populations studied were grouped into two main clusters by a PCA based on both ancestry analysis and a dendrogram. The analysis indicated a low level of gene flow between groups
To Cite this article:
Morales-Morales, A.E., R.H. Andueza-Noh, C.J. Alvarado-López, J.M. Macías, J.M. Tun-Suarez, C.M. Quiroz and F.A. C. Sánchez. 2024. Phenotypic and genetic variation in cowpea (Vigna unguiculata (L.) Walp.) landraces cultivated in a traditional system of southeastern Mexico. Pak. J. Bot., 56(6): DOI: http://dx.doi.org/10.30848/PJB2024-6(14)
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