Estimation of Genotype x Environment Interactions and Yield Stability Analysis of Bread Wheat Genotypes Using AMMI Biplot Method under Syrian Coastal Conditions

Abstract

Additive main effects and multiplicative interactions (AMMI) model was performed to assess genotype x environment interactions and yield stability for 11 bread wheat genotypes in 3 various locations in Syria, the experiment was designed using randomized complete block design (R.C.B.D) with three replications in the three locations, the data were statistically analysis using AMMISOFTS program, the results of the pooled analysis showed that there were significant differences between genotypes (G), the tested locations (L), and the interaction between them (GxL), this indicates the necessity of evaluating and testing genotypes in many different locations.

The results of AMMI Biplot analysis illustrated the superiority genotypes were the promising line ACSAD1147 and Douma6 variety in terms of grain yield average and stability performance, and the variety Gollan2 showed specific adaptation and suitability to the Darmini location, and Douma4 to Al-Sinn location. The results also showed that the Darmini location was the best location.  AMMI Stability Values and Genotype Selection Index  showed that the best-studied genotypes are the promising line ACSAD1147 and Douma6 variety, consistent with the results of AMMI analysis, and they represent the ideal genotype desired by plant breeders.

This study showed the importance and effectiveness of the graphical stability analysis methods ''AMMI Biplot'' in achieving simultaneous selection for both superior performance and high stability, in addition to identify the ideal location.