CULTIVAR X ENVIRONMENT INTERACTION ON OIL AND LIGNIN CONTENT IN THE GRAINS OF SOYBEANS

摘要

Because of the economical and physiological importance of the chemical components of soybean grain and the effects of environmental factors on these components, eight experiments were conducted in the central region of the State of Tocantins, four in the 2014/15 harvest and four in the 2015/16 harvest. The experimental design was a randomized block with three replications and eight treatments. The evaluated cultivars were: 8473RSF RR, 8576 RSF, 8579RSF IPRO, ST 820 RR, TMG 132 RR, 9086RSF IPRO, M8644 IPRO, and M9144 RR. The evaluated characteristics were: oil and lignin content in the grain. A study of adaptability and stability was carried out using the methods of Eberhart and Russell (1966) and Lin and Binns (1988) modified by Carneiro (1998), and of environment, stratification using Lin (1982) and Cruz and Castoldi (1991). The adaptability methods proposed by Eberhart and Russel and Lin and Binns, as well as those of environmental stratification proposed by Lin (1982), Cruz and Castoldi (1991), and by Pearson's correlation, were in agreement for most interpretations. The adaptability methods, well as those of environmental stratification, were in agreement for most interpretations. The cultivars 8579RSF IPRO and M8644 IPRO, for oil content, and 8579RSF IPRO, for lignin content, showed general adaptation and can be grown in all environments. There was no similarity between the environments, for the oil and lignin contents, demonstrating the need to conduct in a greater number of essays.