Genetic divergence in snap-bean (Phaseolus vulgaris L.) evaluated by different methodologies

Abstract

Fourteen snap-bean accessions of the Germplasm Bank of the Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF) were analyzed for their morphoagronomical diversity in genotype-environment (sowing season) interaction, by multivariate analyses. The experiment was conducted in a randomized block design with four replications, in two sowing seasons (April to August – autumn/winter and October to December – summer), in 2001. The clustering grouping methods were in more agreement with autumn/winter data than with the summer data. There was a reduced similarity in the clusters among environments (sowing season). Crossings between UENF 1469 and UENF 1488 and between UENF 1469 and UENF 1486 were indicated, as well as their F1 hybrid in combination with UENF 1488 for providing segregant generations. Accessions UENF 1486, UENF 1487, UENF 1488, UENF 1483, and UENF 1579 are also indicated for summer planting, in an experimental level.