Diversity and productive potential of segregating soybean populations for low altitude and high temperature regions

Abstract

The diversity of segregating soybean populations is fundamental for the selection of lines that are increasingly adapted and stable to the region and that take advantage of the cultivar x environment interaction. Thus, the objective was to evaluate the genetic diversity and adaptability of segregating soybean populations to low altitudes and high temperatures. Nine soybean populations were obtained with a relative maturity degree (GMR) between 5.0 and 6.5. In all populations, lines with greater productive potential than the control were obtained with a GMR of 5.8 to 6.2. The genetic variability of the populations was wide for the production components. Genetic diversity indicated the qualitative and cycle length variables as the most important for differentiating populations. Thus, it is concluded that: the segregating soybean populations present genetic variability and adequate averages for characteristics of economic importance and the Delta 59I60 IPRO RSF x BS 2606 IPRO cross is more promising.