Desempenho agronômico de híbridos de milho no semiárido sergipano

Abstract

Maize (Zea mays L.) plays a crucial role in the semi-arid region of Sergipe due to its socio-economic and nutritional importance. However, the region faces challenges due to irregular rainfall, which limits the maize production system. Thus, the objective of this study was to assess the performance of commercial and experimental maize cultivars in the semi-arid region of Sergipe, using the GT biplot multivariate analysis. The experiment was conducted at the Experimental Farm of Embrapa Semi-Arid, in Nossa Senhora da Glória, Sergipe. Twenty-three maize cultivars were evaluated in a randomized block design with two replications. Variance analysis, Scott-Knott test, and GT biplot were performed, considering the variables: plant height, ear height, male flowering, female flowering, and grain yield. The analysis of variance showed significant differences at 5% probability for grain yield and plant height, and at 1% for ear height, male flowering, and female flowering according to the F-test.Therefore, the GT biplot methodology indicates genotypes 17 (AG 8088 x PopTol 2) and 23 (GNZ 18, Ex 3W05L Vip3) as potential parents in breeding programs for the Alto Sertão region. Genotype 10 (7280, Conventional) stood out as a promising hybrid for cultivation in the region of Nossa Senhora da Glória, SE, due to its high grain yield and satisfactory phenotypic stability.