GRA IN YIELD ADAPTABILITY AND STABILITY IN HEXAPLOID OAT
Keywords:
Avena saúva L., bissegmented linear regression, genotype x environment interaction.Abstract
Ten oat genotypes (Avena saliva L.) and twelve environments were tested to evaluate adaptability andstability of grain yield, to discriminate genotypes on different environments to utilize in plant breeding programs. Thebissegmented linear regression was adopted as statistical method. The analysis showed not only that genotype xenvironment interaction was significative, as well that the environment variation contributed with larger portion than thevariability among genotypes for the significance of this interaction. The results showed that the behavior of the analyzedgenotypes was differentiated for the different environments, accepting existence of genetic variability among the testedgenotypes. Except for UFRGS 7, alI the other genotypes expressed grain yield instability.
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