Division of Vegetable Crops, Indian Institute of Horticultural Research, Hessarghatta, Bangalore 560 089
45 egg plant inbred lines were evaluated in three environments for yield per plant, plot yield, fruit weight, fruit length, fruit breadth, fruit firmness, days to flowering, number of branches, plant spread and plant height. The stability analysis indicated that significant G × E interactions for all the attributes revealed that the genotypes had the divergent linear response to environmental change while, Significant pooled deviation suggests that deviation from linear regression also contributed substantially towards the differences in the stability of genotype. Further, linear and non-linear components contributed significantly to the differences in stability among the genotypes tested. Environmental indices revealed that El is the most favourable environment as the least number of attributes recorded negative trend in their expression. The insight of stability analysis revealed that the inbred line CH 303 (xi=l.71 kg, bi=l.60 and s2 di=0.01) showed supremacy in yield and stable for favourable environments followed by CH 309, CH 267 and CH 250. The inbred line CH-309, a high yielded, unit value of regression coefficient coupled with low degree of deviation from regressions and highly suitable for unfavorable environments and can commercially be exploited as it produces attractive purple long fruits and highly resistant to bacterial wilt disease.
