Genetic divergence among common bean cultivars from precocious group

Abstract

The objective of this work was to select parents to start a program of site breeding of common bean from the precocious group, by using morphological and agronomic traits under field conditions at EMPAER experimental unit located in Caceres County, Mato Grosso State, Brazil. Experimental design used was a randomized complete blocks, with three replications. The following characters were evaluated: number of days for flowering; plant cycle; medium plant height; medium height of first pod; medium of pod length; medium number of pods per plant; medium number of seeds per plant; medium number of seeds per pod; medium seeds weight and grain yield. Univariate variances analyses were used, Tukey test at 1% probability and besides cluster analysis based on Mahalanobis' generalized distance and UPGMA hierarchical method, through GENES software. Cultivars with the potential to be introduced into local improvement according to the analysis proceeded program are Iraí, Carioca, Carioca Pitoco, Bambuí and CNF 6911, due to their larger divergence and different agricultural potential for the characteristics that are important to the program as productivity and precocity.

IAC Veloz: a new early-cycle black bean cultivar

“…Bean seeds should also have high technological and nutritional quality. This makes the entire plant breeding process, beginning with selection of parents, an important strategy for developing cultivars (Carbonell et al 2010, Leite et al 2015.…”