Genetic divergence among African cowpea lines based on morphoagronomic traits

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Abstract

The aim of this study was to estimate the genetic divergence between African cowpea lines from the Cowpea Germplasm Bank of Embrapa Meio-Norte, Brazil. The morphoagronomic diversity of 57 cowpea lines was assessed using multivariate analysis. The germplasm was evaluated in August 2009 using a randomized block design with three replications based on the following traits: number of pods per peduncle, pod length (PL), number of grains per pod (NGP), grain length (GRL), grain width, 100-grain weight (W100G), and yield. The heritability values of the traits PL, NGP, GRL, and W100G were all higher than 70%, indicating the possibility of genetic progress with selection. The crosses between the lines IT82D-889 and IT89KD-245, IT85F-1380 and IT89KD-245, and IT89KD-245 and IT98K-1092-1 could result in promising genetic combinations. The characteristics that contributed most to genetic divergence were W100G (49.7%), PL (16.7%), GRL (12.0%), and NGP (9.7%). © FUNPEC-RP.

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Costa, E. M. R., Damasceno-Silva, K. J., Rocha, M. M., Medeiros, A. M., & Filho, C. J. A. (2013). Genetic divergence among African cowpea lines based on morphoagronomic traits. Genetics and Molecular Research, 12(4), 6773–6781. https://doi.org/10.4238/2013.December.16.3

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