Seleção indireta de genótipos de milho com alta produção de massa de forragem para o Sertão Sergipano

Abstract

Maize is one of the most cultivated grasses in the world, due to its multiple applications, but despite its importance, it suffers from the water deficit characteristic of the Northeast region. Due to this situation, researches are carried out with a focus on developing actions of coexistence with the semiarid. The objective of this work was the indirect selection of maize genotypes with high forage mass production for Sertão Sergipano. The experimental design was in incomplete blocks in lattice with two replications and 36 treatments. Plant height (HP), stem diameter (DC), plant weight (PP), mean dry matter (MMS), mean fresh matter (MMF), percentage dry matter (%DM) and mass were evaluated. forage (MF). It can be seen the presence of variability in maize populations demonstrated by the analysis of variance. The correlation showed a strong positive association between the characters MMF and MMS, also between MF and PP. The variable PP had the greatest direct effect on the MF of genotypes. The variable PP had the greatest direct effect on MF, pointing out that in obtaining new genotypes aiming at higher forage mass content, an important component that should be taken into account is PP. Therefore, plant weight is the most suitable for indirect forage mass selection.