Elucidating the G X E Interaction Using AMMI, AMMI Stability Parameters and GGE for Cane Yield and Quality in Sugarcane

Stable, and high yielding genotype with superior quality across the spatial and temporal variation are to be identified due to changing weather conditions which largely influences the true genotypic performance. The present experiment was conducted with 13 clones including seven test entries along with six recently released varieties as first plant, second plant and ratoon in RBD with three replications during the year 2022-23 and 2023-24 at ICAR-SBI, Coimbatore. Combined ANOVA revealed that there was a significant genotype main effects, environment main effects and G X E interaction effect for all the traits under study except for the traits, cane diameter and single cane weight for which environment main effects were not significant. The AMMI ANOVA for the sucrose, CCS percent, cane yield and CCS yield showed that significant individual effects of Genotypes, Environments and genotype × environment interaction. AMMI biplot analysis revealed that the genotypes Co 17,001, CoC 13,339 and Co 86,032 for cane yield and Co 86,032 and CoC 13,339 for CCS yield were stable. AMMI stability parameters such as ASV, MASV identified Co 86,032, Co 15,003, and CoC 13,339 were stable for cane and CCS yield. The GSI, EV, SIPC showed Co 17,001, Co 15,003, Co 86,032 and Co 11,015 were stable for cane and CCS yield. Multi-trait stability analysis considering the traits like sucrose, CCS percent, cane yield, CCS yield revealed that the genotypes Co 15,003 and Co 86,032 were highly stable. GGE analysis such as mean vs. stability, ranking of genotypes, which won where biplots pinpointed that the genotype Co 17,001 is highly stable than the standards Co 11,015 and Co 86,032 for sucrose content, cane and CCS yield. Thus, the genotypes Co 17,001 and Co 15,003 were stable and superior than the commercial varieties like Co 11,015 and Co 86,032 according to the AMMI, AMMI stability parameters and GGE for the cane yield and CCS yield and they may be promoted for commercial cultivation in target environment. These promising genotypes should be further evaluated in multi-diverse environments across the country to confirm their stability and potential for commercial cultivation in farmers field.