Identificação do uso e desempenho de genótipos de cana-de-açúcar no Estado do Rio Grande do Sul

Abstract

Brazil is the largest producer of cane sugar Saccharum spp. Sugar cane was and is of great importance to Brazil. For the Rio Grande do Sul its importance is through the development of Family Agriculture, whose small farms involved in the industrialization of products such as molasses, “rapadura”, brown sugar, rum, among others. Studies and technical information about its cultivation, aimed at the production of derivatives, has increased significantly in Rio Grande do Sul, and the results demonstrate a potential to expand the cultivation and find that the genotype x environment interaction is one of the main factors be evaluated in developing a production system. In this sense is that it were objectified this work, which evaluated the adoption of genotypes by farmers and agronomic performance of cane sugar genotypes in different environments in the state of Rio Grande do Sul. The variables were the thatched ton ha-1 (TCH), ton. brix ha-1 (TBH) and maturation. For analysis of stability and adaptability ammi methodology was used (Additive Main Effects and Multiplicative Interaction) based on the TCH and TBH variables. The adoption was done through applied research to family farmers who used the cultivars. The survey results indicated that the genotype x environment interaction occurs, with genotypes widely adapted and stable, but also genotypes specific behavior to certain environments. The early maturing set of genotypes RB966928, RB925345, RB855156, RB975935, RB975944 and RB996961 and mid-late cycle RB987932, RB987935, RB935744 and RB008347 showed a good agronomic performance, if implemented properly, can meet the producers and form a solid cane sugar production system in the Rio Grande do Sul State