Performance of corn populations for grain yield and in natura consumption in Tocantins State

Abstract

The cultivars availability for green corn production is very scarce, so there is need to develop new hybrid appropriate for that segment. This work aimed to evaluate performance of corn genotypes to grain yield and potential of in natura consumption in south of Tocantins State. The experiment was planted in Gurupi-TO, on April 25, 2009. The treatments were 158 populations and two cultivars as witness. The experimental design was randomized block with four replications, were evaluated: ear length, ear diameter, ear format, alignment of rows, crown color of grain, grain type, 100 seeds weight and grain yield. There was a differentiation of genotypes for all characteristics and for all variables there are genotypes with desirable characteristics on market for in natura consumption. Thus, conclude that the genotypes 01-5; 02-1; 02-2; 02-3; 02-4; 10-5; 25-1; 32-1 and 34-4 have the aggregate of favorable characteristics for development of commercial genotypes for in natura consumption, moreover the corn genotypes of UFT maize breeding program have yield potential and can be used to cultivars development for use in Tocantins conditions. The evaluated populations have variability for exploration in breeding programs aiming different commercials uses.