Confidence Region and Genotype Stability Estimation of AMMI Model by Bootstrap Resampling.

Abstract

Additive Main Effects Multiplicative Interaction (AMMI) is the widely analysis used in understanding of genotype and environment interaction (GEI) in plant breeding research. The interpretation of AMMI based on biplot visualize the first two component of principle components analysis. Biplot of AMMI is only exploration analysis and it is not provide the hypothesis testing, so it can result the different interpretation by plant breeding researchers. The aim of this research is to find a systematic approach through bootstrap resampling method. Bootstrap resampling method on AMMI model produce confidence region of first two interaction principle component (􀜫􀜲􀜥1 and 􀜫􀜲􀜥2) for genotype and environment respectively. Bootstrap confidence region of 􀜫􀜲􀜥1 and 􀜫􀜲􀜥2 were estimate the stability of genotype, thus making the AMMI analysis more precise and realiable for characterization and selection of population for genetic environment.