Vol. 11, Issue 2 (2022)

Author(s):
Sharwan Kumar Dhaka and Ram Avatar Kaushik

Abstract:
To understand the complexity of genotype stability in eggplant, an investigation was carried out over three year and wide variation among genotypes, environments and genotype x environment interaction was observed for all the traits. The linear, component of genotype-environment interaction alone as significant for all the traits, while the non linear component exclusively was significant for fruit length, fruit width, number of fruits per plant and fruit yield per plant. Stable genotypes were identified for wider environments and specific environments with high mean performance (over general mean) for fruit yield per plant. Considering the overall performance two parents Pusa Uttam and Pusa Upkar were found promising with high yield and stable performance for number of characters. These lines can be recommended for general cultivation and can also be utilized in breeding programme to incorporate stability. The 42 hybrids were found stable over environments for fruit yield of which the 18 hybrids showing high yield potential and was detected for general adaptability and proposed for commercial cultivation and only two hybrids, Pusa Purple Long x Pusa Upkar and Punjab Sadabahar x Pusa Upkar exhibiting below average stability and suitable for favourable environmental conditions.