An overview of genotype x environment interaction and yield stability analysis in applied plant breeding: great emphasis given to coffee (Coffea arabica L.)

The inconsistence of genotypes across location during plant breeding is the major challenges to breeder. That differential response different environment. Meanwhile stability ability a genotype withstand stressful conditions and yet be able produce yield. Thus, an absolute relative measure. Arabica coffee has specific adaptation nature that leads highly significant instability in its program. In study bean yield cultivars tested at multi- locations within domain growing ecologies Ethiopia, showed x environment interaction. review previous research also indicated inconsistent effects interaction on cup quality. Yield-stability analysis very important measuring cultivar suitability for crops seasons agro-ecological region identify stable genotype. have been challenge breeders biometricians, it complicates selection superior genotypes. It minimize usefulness environments selecting. Since approach develop are, optimum condition under which they will grown manage throughout formalized procedures breeding. During measurement if variance found significant, various methods can used genotype(s). Most parameters are briefly discussed this review. Int. J. Agril. Res. Innov. Tech. 11(2): 117-123, Dec 2021