Expected values and predictive model for black seed (Plaseolus vulgaris L.) production

Abstract

The objective of this work was to determine the tendencies of expected values, linear associations, and to define which traits compose the best predictive model for mass of seeds per plant of black and pinto bean genotypes from different regions of Rio Grande do Sul. The experiments were conducted in the agricultural years of (2015-2017). The expected values are increased as function of the segregating generation of F2, F3, F4 for first pod insertion height and plant height. Furthermore, black commercial group determines superiority for number of seeds per plant, while pinto genotypes are closely related to increments of mass of seeds per plant. Linear associations are specific to germplasm origin, commercial group and segregating generations of bean genotypes regarding traits of agronomic interest. The predictive model created to increase mass of seeds per plant is specific for germplasm origins and commercial group of beans. Seed yield of pinto genotypes is maximized by plant height and number of seeds per plant. For genotypes of black commercial group, this increase is achieved through plant height, number of pods and seeds per plant in F3 and F4 segregating generations.