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Changes in Certain Antioxidative Enzymes and Growth Parameters as Affected by Complete Submergence and Subsequent withdrawal in rice Cultivars that Differ in Submergence Tolerance

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Title Changes in Certain Antioxidative Enzymes and Growth Parameters as Affected by Complete Submergence and Subsequent withdrawal in rice Cultivars that Differ in Submergence Tolerance
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Creator Sarkar, R.K., Sanjukta Das, Ravi, I.
 
Subject Antioxidative enzymes, Indica Rice, Submergence tolerance
 
Description The role of antioxidative enzymes on submergence tolerance has been discussed
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, and tolerant to submergence, respectively. A deleterious effect of submergence was noted as both above-ground dry matter accumulation and chlorophyll content decreased during submergence and subsequent re-aeration. However, the rate of reduction was lower in the tolerant cultivar. The tolerant cultivar FR 13A maintained higher dry weight during submergence and subsequent re-aeration and accumulated lower proline and malondialdehyde contents than the other cultivars. The activities of the enzymes catalase, peroxidase, and superoxide dismutase, expressed on a per g fresh weight of leaves basis, were higher in FR 13A than in the other cultivars, both underwater and 24h after the initiation of re-aeration. However, ascorbic acid oxidase activity was lower in FR 13A. The cultivar CR 383-10, which has the capacity to accumulate more above-ground dry matter under normal conditions, showed a greater elongation ability under submergence and was similar to the susceptible cultivar IR 42 in terms of enzyme activities and the other parameters investigated during submergence and subsequent re-aeration.
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Date 2022-11-11T10:49:47Z
2022-11-11T10:49:47Z
2001-09-01
 
Type Article
 
Identifier Sarkar, R.K., Sanjukta Das, Ravi, I. (2001) Changes in Certain Antioxidative Enzymes and Growth Parameters as Affected by Complete Submergence and Subsequent withdrawal in rice Cultivars that Differ in Submergence Tolerance. Journal of Agronomy & Crop Science 187:69-74. https://doi.org/10.1046/j.1439-037X.2001.00510.x
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http://krishi.icar.gov.in/jspui/handle/123456789/75021
 
Language English
 
Relation Not Available;
 
Publisher Wiley Publishers