Effect of Anaerobic Condition on the Induction of α-Amylase in Rice (Oryza sativa L.) Seeds

Rice has the unique ability to express α-amylase under anoxic conditions, a feature that is critical for successful anaerobic germination and growth. We examined α-amylase activity in 8 genotypes of rice (Oryza sativa L.) seed in laboratory condition, which showed different seedling establishment traits in field experiments, grown in anaerobic condition. There was tolerant check (Savita) and susceptible check (Sambha). Anaerobic condition was maintained by 10 cm water in beaker. Result emphasised that in tolerant genotypes amylase activity was significantly higher than susceptible check (Sambha) at different day intervals but optima were observed at 5th day. Maximum amylase activity was found in Sipulutpandon among all genotypes.