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An experiment was carried to evaluate the performance of eighteen pigeonpea genotypes under drought stress. Drought stress was imposed at two phenophases of growth such as flowering and pod maturation stages. The parameters such as Chlorophyll a, b, a : b ratio, soluble protein, leaf epicuticular wax (ECW) and yield were recorded at flowering and pod maturation stages. Drought stress reduced the chlorophyll content and yield of pigeonpea. The drought tolerant genotypes showed significantly higher photosynthetic pigments, soluble protein, ECW and yield. These parameters can be used as reliable indices for selection in pigeonpea breeding for drought tolerance.
Drought, photosynthetic pigments, soluble protein, ECW, yield