Genetic divergence among African cowpea lines based on morphoagronomic traits.

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%).

Bibliographic Details

Main Authors:	COSTA, E. M. R., SILVA, K. J. D. e, ROCHA, M. de M., MEDEIROS, A. M., ANUNCIAÇÃO FILHO, C. J.
Other Authors:	E.M.R. Costa, Universidade Federal Rural de Pernambuco, Departamento de Agronomia.; KAESEL JACKSON DAMASCENO E SILVA, CPAMN; MAURISRAEL DE MOURA ROCHA, CPAMN; A.M. Medeiros, Universidade Federal do Piauí.; C.J. Anunciação Filho, Universidade Federal Rural de Pernambuco, Departamento de Agronomia.
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2015-06-16
Subjects:	Acessos de caupi, Cowpea accessions, Germplasm bank., Método estatístico, Banco de germoplasma, Feijao de corda, Vigna unguiculata, Multivariate analysis.,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1017735 http://dx.doi.org/10.4238/2013.December.16.3
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