Genetic progress in traits of yield, phenology and morphology of common bean
2008
Nerinéia Dalfollo Ribeiro | Alberto Cargnelutti Filho | Nerison Luiz Poersch | Evandro Jost | Simone Saydelles da Rosa
The genetic progress achieved by the research institutions that registered common bean cultivars in the Stateof Rio Grande do Sul between 1998 and 2005 was estimated in traits of yield, phenology and morphology of common bean,with the aim to orient future genetic breeding studies. A total of 75 genotypes were evaluated, in variable number in the sevenyears, in a random block design with three replications. Positive genetic gains were verified for the yield traits (grain yield andcomponents), while negative genetic gains were stated for the phenological (flowering and cycle) and morphological traits(lodging, insertion height of first and last pod). Our results demonstrated the efficiency of the adopted breeding strategies inthe development of germplasm with higher and earlier grain yield. For the morphological traits however, the focus of theprograms should be reevaluated.
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