Avaliação agroindustrial e dissimilaridade genética em progênies e variedades RB de cana-de-açúcar

Abstract

The aim of this work was to evaluate agro-industrial performance and genetic dissimilarity of progenies and sugarcane varieties RB in the initial phase of improvement. The experiment was conducted in the agricultural area of Usina Santa Tereza, Goiana –PE, during the 2006/2007 growing season.Experimental design of randomized blocks with five replications was used. The variables were: TPH, TCH, FIB, PC, PTY, SSC, TRS and TRS t/ha. The analysis of variance and estimation of genetic parameters were performed. The Mean Euclidean were used as dissimilarity measure. The F test showed significance and high estimation of mean heritability for TPH, TCH and TRS t/ha variables, indicating the possibility of successful selection based on those characters. Dissimilarity measure used in this work enabled the identification of divergent progenies providing to the RIDESA’ sugarcane plant breeding programme a safer choice of crosses to be performed.