Abstract
The activities of starch hydrolyzing enzymes and phosphatases were studied in seedlings of three Indica rice (Oryza sativa L.) cultivars, namely Panikekoa & T 1471 that showed good capacity for seedling establishment under submergence (tolerant) and IR 42 which had poor under water seedling establishment capacity (susceptible). Under submergence the total amylolytic activities were significantly higher in susceptible cultivars compared to the tolerant cultivars. Likely, the activities of α-amylase, debranching enzymes and α-glucosidase were also higher in susceptible cultivar IR 42. The activities of starch phosphorylase were comparatively higher in tolerant cultivars than susceptible cultivars. Susceptible cultivars maintained higher activities of both acid and alkaline phosphatase as well as phytase activities. Tolerant cultivars with higher seed biomass and low activity of hydrolytic enzymes might sustain the supply of food materials for longer period and hence, survived and established themselves under water.
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Panda, D., Rao, D.N., Das, K.K. et al. Role of starch hydrolytic enzymes and phosphatases in relation to under water seedling establishment in rice. Ind J Plant Physiol. 22, 279–286 (2017). https://doi.org/10.1007/s40502-017-0305-0
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DOI: https://doi.org/10.1007/s40502-017-0305-0