Data/hora: 03/06/2024 10:57:36

Provedor de dados: 	63	
País: 	Brazil	
Título: 	Genetic control of cowpea seed sizes	
Autores: 	Lopes,Francisco Cláudio da Conceição; Gomes,Regina Lúcia Ferreira; Freire Filho,Francisco Rodrigues.	
Data: 	2003-01-01	
Ano: 	2003	
Palavras-chave: 	Vigna unguiculata; 100-seed weight; Inheritance; Gene effect.	
Resumo: 	Cowpea [Vigna unguiculata (L.) Walp.] is one of the most widely adapted grain legumes in hot regions of Africa, Asia and the Americas. In the semiarid Northeast of Brazil, it is the main subsistence crop, an excellent protein source of low cost, for the poor population. The objective of this work was to estimate genetic parameters to understand the inheritance of seed sizes in cowpea. The parents P1 and P2 and the generations, F1, F2, BC1 and BC2 of the cross TVx5058-09C X Manteiguinha formed the genetic material for this study. These six generates (P1, P2, F1, F2, BC1 and BC) were evaluated in a completely randomized block-design with six replications, in Teresina - PI, Brazil, in 1998. The genetic parameters estimated were: phenotypic and total genetic variance, additive and dominance genetic components of variance and the variance attributed to the environment, heritability in the broad and narrow senses, average degree of dominance and the number of genes controlling the character. The additive - dominance model fitted the data for 100-seeds weight in as much as the midparental value and the additive effect were the more important genetic parameters for the determination of this character. The number of genes that control its expression is five. The occurrence of high values for narrow sense heritability indicates that the selection for seed size can be made in early generations.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200016	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162003000200016	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.60 n.2 2003	
Fonte: 	info:eu-repo/semantics/openAccess