SELEÇÃO DE HÍBRIDOS DE SORGO GRANÍFERO CULTIVADOS NO VERÃO EM TRÊS LOCALIDADES

Abstract

Cultivated area and yield of grain sorghum has increased considerably in Brazil in the last few yearsdue to the increased demand of grains for animal feed. Plant breeding has contributed to productivity increase,providing new hybrids adapted to different production areas. The purpose of this work was to evaluate 25 hybrids inthree environments. The trials were carried out in Sete Lagoas, MG, Pelotas, RS and Nova Porteirinha, MG. Hybridswere grown in a randomized complete block design with three replications. The hybrids BRS 310 and BRS 330were used as check cultivars. The effect of hybrids was significant, showing variability among them. The interactiongenotypes x environments for yield and panicle harvest index were significant, showing no coincidence between theperformance of the hybrids at the different locations. Check cultivars yielded 4.5 t ha-1, while eleven hybrids weresuperior to them. The best hybrids were 1099030 and 1099048, with yield higher than 6.0 ton ha-1 and earlier maturity.

Keywords

• Sorghum bicolor
• hybrid selection
• yield
• interaction genotypes x environments