DROUGHT TOLERANCE IN INTERVARIETAL MAIZE HYBRIDS

ABSTRACT In the period of planting second-season maize, there is high climatic instability with greater probability occurrence water deficit. This one factors that most cause reduction in maize grain yield. this context, aim was to identify stable, irrigation-responsive and drought-tolerant genotypes. The experiments were conducted Mococa / SP Tatuí SP, at Instituto Agronômico, two assays, under full irrigation conditions other stress. experimental design randomized blocks 3 replicates. Male flowering, female plant height, ear hectoliter weight, hundred weight yield evaluated. Joint analysis variance stability performed by GGEBiplot method. Significant genotype site effects observed for all traits. x interaction found traits except height male flowering. characteristics affected deficit heights Genotypes F2 BM709 PopTol 2, IAC 46 30K75 are considered ideotypes because their yield, phenotypic plasticity drought tolerance.