GENETIC DIVERGENCE REGARDING THE CHEMICAL COMPOSITION OF SOYBEANS IN TOCANTINSLUCAS ALVES DE FARIA, JOÊNESMUCCI PELUZIO, GUILHERME BENKO DE SIQUEIRA, DOMINGOS BONFIM RIBEIRO DOS SANTOS, CLÓVIS MAURÍLIO DE SOUZA, MARIA DILMA DE LIMA, VANDERLAN CARNEIRO DIAS, WEDER FERREIRA DOS SANTOS, ADRIANO SILVEIRA BARBOSA, EVANDRO REINA, FÁB
Environmental conditions and genetic variability can result in changes in the chemical composition of the grains, reflecting in different groupings in the multivariate procedures. Thus, the present work was carried out aiming to study the genetic divergence of soybean cultivars, regarding the chemical composition of the grains, in tests represented by the combination of years/places/sowing times, out four were carried in the 2014/15 harvest and four in the harvest. 2015/16. The experimental design used, in each environment, was randomized blocks with three replications and eight treatments, represented by the cultivars: 8473RSF RR, 8576 RSF, 8579RSF IPRO, ST 820 RR, TMG 132 RR, 9086RSF IPRO, M8644 IPRO e M9144 RR. The chemical characteristics the evaluation of grains were oil, protein, carbohydrate, cellulose, hemicellulose and lignin content. Analysis of variance was performed for each assay, applying the Tocher grouping method and Singhâs criterion (1981) to quantify the relative contribution of these characteristics to genetic divergence. The harvest, the place and the sowing times are influenced by the grouping of soybean cultivars. The cultivar M9144 RR was the most divergent and could be used as a parent in the future breeding program for chemical composition in grains. The characteristics of oil and cellulose content were the ones that most contributed to the genetic divergence of cultivars.