Caracterização de genótipos de feijão-lima (Phaseolus lunatus L.) na região de Pelotas - Rio Grande do Sul

Abstract

The objective of this study was to characterize seeds, seedlings and plants of twenty seven genotypes of lima beans, about morphologic aspects and eight of these as well as agronomic aspects, in the region of Pelotas, Rio Grande do Sul. For the morphological characterization was used as the reference the document "Descriptors for Phaseolus lunatus L.", published by the International Plant Genetic Resources Institute (IPGRI). For the agronomic characterization, trials were implemented in the years 2010 and 2011 at experimental area of Embrapa Clima Temperado Estação Terras Baixas. Eight genotypes were evaluated with respect to the cycle, growth pattern, leaf area index and weight of leaves and branches. It was found that the genotypes of lima bean have wide variation with respect to morphology, mainly as regards the characteristics of the seed and seedling. With respect to agronomic traits, it was observed that the genotypes have indeterminate growth pattern, non uniform flowering and maturation, and initiation of reproductive stages from 65 to 140 days after sowing. The genotype G7 differed in the morphological and agronomic characters notable for its greater potential for seed production. The genotype G8 was highlighted by blooming later and high vigor, with higher leaf area index and weight of leaves than the others, with greater potential for soil covering.