Evaluation of soybeans genotypes in field environments of rio grande do Sul State, Brazil

Agronomic performance of soybean genotypes results from the genetic constitution, environmental conditions and genotype x environment interaction. We aimed to evaluate the traits with agronomic importance in elite soybean genotypes, with Roundup Ready® and Intact RR2 PRO® technologies in different sites of Rio Grande do Sul state, Brazil. The trials were carried out in 2013/2014 growing season in a randomized complete block design, arranged in a 4x10 (four soybeans genotypes and ten sites) factorial treatment design, with four replications. The sites were Frederico Westphalen-RS, Derrubadas-RS, Tapera-RS and Independência-RS. Tem used soybeans genotypees were: NS 5445 IPRO, TEC 6029 IPRO, 6458 RSF IPRO, 6061 RSF IPRO and CD 2611 IPRO with INTACTA RR2 PRO® technology and NS 6211 RR, TECIRGA 6070 RR, DMario 5.8i RR, Don Mario 5.9i RR and CD 2585 RR with Roundup Ready® technology. Assessed traits were: plant height, first pod insertion height, number of branches, number of pods in branches, number of pods on the main stem, total number of pods, number of pods with one kernel, number of pods with two kernels, number of pods with three kernels, grain yield and thousand-kernel weight. 6458RSF IPRO and NS 6211 RR genotypes show greater agronomic performance and can be indicated for Independência-RS environment. 6061 RSF IPRO genotype shows superior agronomic performance and can be recommended for Tapera-RS and Derrubadas-RS environments. NS 6211 RR genotype shows superior agronomic performance for Frederico Westphalen-RS environment. Based on assessed traits, Tapera-RS, Derrubadas-RS and Frederico Westphalen-RS cultivation environments, have more favorable soil and climatic conditions for growth and development of elite soybean genotypes.