Produtividade de grãos, adaptabilidade e estabilidade de genótipos de soja de ciclos precoce e médio

Abstract

The work was developed with objective of evaluate the grain yield, the adaptability and phenotypic stability of soybean cultivars and lineages with earlier and medium cycles. The experiments were carried out in Viçosa, Florestal, São Gotardo and Rio Paranaíba, in the Minas Gerais State, in two agricultural years. We used the experimental design of blocks completely with treatments allocate at random, in four repetitions. Wasobtain the production relative index to the patterns (cultivar) and employed the Annicchiarico and Centroid methods for adaptability and stability fenotipic analyzes. The genotypes x environments x crop seasonsinteraction (GxLxA) for yield grains was significant and, for the R2, it was detected that the differential performance of the genotypes in relation to the environments (R2 = 50,17%) it was bigger than in to the crop seasons (R2 = 13,81%). The lineage CS 801 showed adaptability to high-tech environments, surpassing the productivity of standards cultivars used. The CAC-1, UFV-16, UFV-19 cultivars and CS 801, CS 802 and UFV98 700,739 lineage were classified as general adaptability.