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Eight cultivars of Indian mustard (Rajat, PCR-10, DHR-9401, RH 30, BIO 902, RH 819, Varuna and RH 8812) were crossed in a diallel design excluding reciprocals during 1998-99 in Hisar, Haryana, India. In the rabi season of 1999-2000, F₁ seeds of all parental lines and their crosses were evaluated under normal and terminal moisture stress (withholding irrigation after 50 days after sowing, DAS). The mean values for all traits studied, except 1000-seed weight, decreased under terminal moisture stress. All tested genotypes showed delayed flowering and maturity under normal environment compared to water-stressed environment. RH 30 was the earliest to flower, while PCR-10 required the maximum number of days to flower. The earliest cultivars to mature were Rajat × RH 30 under normal environment; and Rajat × RH 30 and Rajat × Varuna under terminal water stressed environment. Rajat × PCR-10 …