DIVERGÊNCIA GENÉTICA ENTRE ACESSOS DE MAMONA EM DEZ MUNICÍPIOS DE ALAGOAS

Abstract

Aiming to evaluate the genetic divergence among castor bean accessions through collections of racemos with seeds of ten municipalities in the State of Alagoas in the year 2007. The variables were analyzed: weight of 100 seeds (W100), weight of the 100 seed coats (WC100); transversal (TLS) and longitudinal lengths of the seed (LLS); raceme length (LR); e content oil of the seeds (OCS). For the evaluation of genetic divergence was used the principal components analysis and the cluster were made using the Tocher method. Phenotypic correlations between the variable and the altitude (ALT) of the collection places were also carried through. Exist significant divergence between the accessions, indicated for the two first principal components, that explained 82.15% of the existing variability. The variables W100 and WC100 were those that more contributed for the observed divergence. Four groups were formed by Tocher' methodology, showing possibilities of future works to explore the variability found in castor bean accessions. The correlations were positive between some variables, like the altitude, that seems to have especially influenced the W100 variable, but not on OCS.