Coefficient of repeatability, stability,and adaptability estimates for Psidium guajava S1 progenies via mixed models

Abstract This study intends to estimate the coefficient of repeatability for traits relating yield, so as infer what is minimum number evaluations required identify superior genotypes; verify adaptability and stability; predict genetic gains; select best families in S1 progenies Psidium guajava. Families were obtained by means self-fertilization genotypes (full sibs) from guava tree breeding program UENF. The experiment was implemented at Experimental Station Ilha Barra do Pomba, municipality Itaocara-RJ. In this case, an experimental randomized block design used with 18 inbred families, three replicates, ten plants per plot. Inbred evaluated harvests regarding fruit weight, fruits plant, total yield. It then conducted analysis repeatability, adaptability, stability Selegen/REML/BLUP program. Repeatability values show that performance constant among measurements, suggesting need perform only selection genotypes. There agreement on choice 1, 4, 6, 12 most yielded, adaptable, stable evaluated.