Seven mungbean genotypes were evaluated for their response to water-deficit stress and for different stress attributes for the selection of productive and stress tolerant genotypes. The results indicated that mean productivity (MP) and geometric mean productivity (GMP) would be useful selection indices to identify mungbean genotypes that have high seed yield potential across a range of environments. MP would best identify genotypes with high performance in nonstress environments and GMP would best identify genotypes with high performance in stress environments. High and negative correlation coefficients were found between stress susceptibility index (SSI) and seed yield in the driest condition both with Ys (r = -0.96) and Yc (r = -0.82). Stress tolerance index (STI), highly significantly correlated with Ys, Yc, MP and GMP at all stress intensities, may prove to be a useful index of yield potential and stress tolerance across a range of environments. Generally, choice of the most appropriate selection index will depend on the objective of selection and target areas.
Kalsoom Akhtar, Muhammad Ashraf and Altaf-ur-Rehman Rao, 2000. Evaluation of Selection Indices for Identification of Productive Mungbean (Vigna radiata L. Wilczek) Genotypes Under Different Water Regimes. Pakistan Journal of Biological Sciences, 3: 1541-1544.