REML/BLUP applied to characterize important agronomic traits in segregating generations of bean (Phaseolus vulgaris L.)

Abstract

The objective of this work was to estimate and predict the genetic gains through the REML/BLUP methodology for the characters of agronomic interest of common black beanas at segregating generations. The experiments were conducted in 2015, 2016 and 2017 in experimental design consisted of augmented blocks in four replicates. Superior genetic variability was identified for the first pod insertion height and plant height in the F4 segregating generation. For the number of pods, seeds and seed mass per plant, genetic contribution superior to the phenotype is expressed in F3 segregating generation. The prediction of genetic value defines that the number of pods, seeds and seed mass per plant can be potentiated in F2 segregating generation by selection of population 26, selection of F3families 64 and 49, F4 families 33 and 19. Through the estimations and genetic predictions of the characters measured in the segregating generations F2, F3 and F4 it is possible to define six multivariate genetic profiles. These strategies can be used in quantitative genetic studies aimed at increasing the production of common black bean seeds.