Abstract
The experiment was carried out in four consecutive seasons to study the phenotypic stability of eggplant germplasm for yield components and fruit quality parameters. The data were subjected to modern statistical tools like Additive Main effects and Multiplicative Interaction (AMMI) model and the Genotype main effects and Genotype × Environment Interaction effects (GGE) model and Cluster Analysis. The IPCA-I was attributed 58.53% and 80.36% Genotype × Environment (G × E) variation of fruit weight and fruit yield per plant, respectively. The cumulative contribution of IPCA-I and IPCA-II to the total G × E variance was 95.72% for number of fruits per plant, 91.02% for anthocyanin in peel, 87.0% for total phenols and 93.42% for DPPH Free Radical Scavenging Capacity (DPPHFRSC). Significant residual interaction values demonstrated the presence of a considerable noise for total phenols and DPPHFRSC. AMMI-I biplot indicated that Lal Kuli, Samrat, Mala, Muktamala, Lamba Kuli, Mukta Hasi, Muktazuri and Heera could be recommended for general cultivation in both spring-summer and autumn-winter to achieve optimum yields. The autumn-winter and spring-summer seasons were emerged as two different mega-environments. Cluster analysis revealed the high percentage of similarity between Muktamala and Muktazuri and the diverse nature of Panna, Makra Midlong and KS-8103 in terms of response to the environment.
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