Grain Yield Stability Analysis of Lentil Genotypes by Additive Main Effects and Multiplicative Interactions Model

This paper presents the yields and several stability parameters of additive main effects and multiplicative interactions (AMMI) model in ten improved lentil genotypes which tested in very diverse environmental conditions in Iran. The F-Gollob indicated that first three interaction principle component analysis (IPCA) axis of AMMI model was significant while cross validation procedure through RMSPD (root mean square prediction difference) values indicated only first an IPCA axis of AMMI model was adequate for GE interaction interpretation. According to EV1, D1, AMGE1, SIPC1 and ASV parameters, genotypes ILL 6037, ILL6199 and cultivar Gachsaran were the most stable genotypes. Based on EVF parameter, genotypes FLIP 96-9L, FLIP 96-4L and ILL 7946 and according to DF parameter genotypes FLIP 96-9L, ILL 7946 and ILL 6199 were the most stable genotypes. Genotypes FLIP 92-12L, ILL 7946 and ILL 6199 based on SIPCF parameter and genotypes FLIP 82-1L, FLIP 96-9L and ILL6199 based on AMGEF parameter were the most stable genotypes. According to the rank correlation coefficients, mean yield did not has any positive significant correlation with AMMI model parameters but showed negative significant correlation with EV1, D1, AMGE1, SIPC1 and ASV parameters. The results of factor analysis of AMMI stability parameters and mean yield indicated that only SIPCF following to EVF parameters would be useful for simultaneously selecting for high yield and stability. A scatter plot of the rotated scores of the first two factors indicated the AMMI stability parameters classified as two distinct classes that corresponded to different static and dynamic concepts of yield stability.