Changes in Certain Antioxidative Enzymes and Growth Parameters as a Result of Complete Submergence and Subsequent Re‐aeration of Rice Cultivars Differing in Submergence Tolerance

• DOI: 10.1046/j.1439-037x.2001.00510.x
• Publication Date: 2003-03-12T02:58:08Z
• Authors: R. K. Sarkar; S. Das; I. Ravi
• Keywords: Dry weight

An experiment was conducted on the three indica rice ( Oryza sativa L.) cultivars IR 42, CR 383‐10 and FR 13A, which are susceptible to submergence, submergence‐avoiding tolerant respectively. A deleterious effect of submergence noted as both above‐ground dry matter accumulation chlorophyll content decreased during subsequent re‐aeration. However, rate reduction lower in cultivar. The cultivar 13A maintained higher weight re‐aeration accumulated proline malondialdehyde contents than other cultivars. activities enzymes catalase, peroxidase superoxide dismutase, expressed a per g fresh leaves basis, were cultivars, under water 24 h after initiation ascorbic acid oxidase activity 13A. 383‐10, has capacity accumulate more normal conditions, showed greater elongation ability similar 42 terms enzyme parameters investigated