Data/hora: 04/06/2024 01:55:07

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Genetic variability and selection for laticiferous system characters in Hevea brasiliensis	
Autores: 	Gonçalves,Paulo de Souza; Cardinal,Átila Bento Beleti; Costa,Reginaldo Brito da; Bortoletto,Nelson; Gouvêa,Lígia Regina Lima.	
Data: 	2005-09-01	
Ano: 	2005	
Palavras-chave: 	Hevea brasiliensis; Rubber yield; Laticiferous traits; Genetic parameters.	
Resumo: 	Six laticiferous system characters were investigated in 22 three-year-old, half-sib rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] progenies, evaluated at three sites (Votuporanga, Pindorama and Jaú, all in the São Paulo State, Brazil). The traits examined were: average rubber yield (Pp), average bark thickness (Bt), number of latex vessel rings (Lv), average distance between consecutive latex vessel rings (Dc), density of latex vessels per 5 mm per ring averaged over all rings (Dd) and the diameter of the latex vessels (Di). The joint analysis showed that site effect and progeny x sites interaction were significant for all traits, except Lv. Estimates of individual heritabilities across the three sites were high for Bt; moderate for Lv, Pp and Dc; low for Dd and very low for Di. Genetic correlations in the joint analysis showed high positive correlations between Pp and the other traits. Selecting the best five progenies would result in genetic gains of 24.91% for Pp while selecting best two plants within a progeny would result in a Pp genetic gain of 30.98%.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300014	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-47572005000300014	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.28 n.3 2005	
Fonte: 	info:eu-repo/semantics/openAccess