Madras Agricultural Journal
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Identification of rice hybrids for aerobic condition based on physiological traits

Abstract

An experiment was undertaken to identify rice hybrids for aerobic condition based on physiological and root characters associated with water stress tolerance in rice. Water deficit under aerobic condition decreased the releative water content of rice hybrids and increased the catalase activity for the maintenance of membrance structure and function. None of the hybrids showed desirable performance for all the traits. However, five hybrids viz., IR 68885A / IR 73718-3-1-3-3, IR 67684A / CT-6510-24-1-2, IR 70369A / IR 73718-3-1-3-3, IR 70372A / PSBRC 80 and IR 70372A / IR 73718-3-1-3-3 recorded desirable mean values for maximum characters and exhibited better adaptability to aerobic conditions.

Keywords: Rice hybrids, Physiological parameters, Aerobic condition

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