Avaliação do potencial produtivo de grãos e massa verde de genótipos de milho no Estado do Tocantins

Abstract

The agronomic evaluated at different locals may be produced data for the analysis of adaptability and stability, that minimize the effect this interaction for the choice of the genotypes. This work aim: to evaluate the grain yield and green weight of the 16 corn genotypes, in the intercrop and crop, at the Center-South of Tocantins State; to study the adaptability and stability; and classify them, about the tendency of the productive purpose: grain or green weight. The eight experiments were conducted in 2010, six at Gurupi-TO and two at Palmas-TO, when each one was a different environment, and they were distinguished for the fertilization of seeding and coverage and, season. They were evaluated: green weight of plant and the grain yield (g plant-1). After this, it has done through the analysis of the adaptability and stability, and the classification of the genotype tendency of the productive purpose. The boot characteristics were significantly influenced by the interaction genotype x environment. In the environment with organic fertilization (seeding) plus nitrogen fertilization (covered) at intercrop, the genotypes had shown de highest grain yield (140 g planta-1) and green weight (960 g planta-1). At the grain yield, three environments were classified like a favorable by the adaptability and stability methodology and, at the green weight, were five. The genotype H01, in grain yield, was adapted for favorable environment and has shown tendency of the productive purpose for this characteristic. The genotype P08 and P02 were adapted for both environments and favorable environments, respectively, in green weight of plant and, had shown tendency of the productive purpose for this characteristic.