Stability Analysis of Bottle gourd (Lagenaria siceraria (Mol.) Standl.) in Southern Plains of Rajasthan (India)

Fifty-eight genotypes of bottle gourd were evaluated for stability in a Completely Randomized Block Design over three different environments in Rajasthan during summer and late Kharif 2021 (E2 & E3). According to the Eberhart and Russell model for stability analysis, P3 x P6 for days to first harvest, P2 x P9 , P3 x P6 , P3 x P9 , P4 x P7 , P3 x P7 , P1 x P3 for fruit length, P4 x P10, P2 x P5 , P1 x P6 forrind thickness, P1 x P6 , P6 x P8 , P9 x P10 for flesh thickness, P6 x P8 , P3 x P9 , P1 x P6 , P8 x P9 , P8 x P10, P4 x P6 for stem girth, P8 x P9 , P6 x P8 , P4 x P8 , P8 x P10 for vine length at final harvest, P4 x P5 and P5 x P6 for yield per vine, P1 x P5 and P1 x P3 for total sugar and P5 x P10, P5 x P9 , P9 x P10, P1 x P2 , P1 x P3 , P1 x P6 and P4 x P7 for non-reducing sugar were exhibited non-significant deviation from regression (S2 di ) and regression coefficient (bi 1) along with mean value higher than the population mean. It indicates that these hybrids would stablein favorable environment. The hybrid P8 x P10 and P9 x P10 for rind thickness and the hybrid P4 x P9 yield per vine were exhibited non-significant deviation from regression (S2 di ) and regression coefficient nearly equal to a unit (bi =1) along with mean value greater than the population mean, thereby indicated its average stability under different environment