LINES OF BEAN (Phaseolus vulgaris L.) WITH HIGH OF IRON AND ZINC

Abstract

This work was developed in order to evaluate a group of kidney bean lines and to select those with high grain yield and high iron and zinc content. In 2009 there were selected seven contrasting ecological environment to assess 64 lines using an Alpha Lattice Design 8 x 8 with two replicates. During the second year the top 20 lines were evaluated at four locations with an Alpha Lattice 5 x 4 with three replicates. Assessments in both cycles of yield were analyzed with REML, to estimate variance components for grain yield. The genotype-environment interaction was explained using AMMI Biplot-SReg analysis. During the first year, five locations were included in a combined analysis due to the repeatability index (h²>0.30) of grain yield. The analysis of variance indicated differences (P<0.01) among environments, genotypes and genotype-environment interaction; the main components 1 and 2 were also significant (P<0.01). Eleven lines were selected with high iron and zinc content and 8 lines for its high yields. For the second year high significant differences (P<0.01) between sites and treatments were found. The beans lines with the highest iron content were NUA 24, NUA 27, NUA 59 and NUA 46; with 93, 87, 85 and 83 ppm, respectively. The zinc content averaged 30.93 ppm for each of these lines.