[ Objective ] This study aimed to investigate the effect of superoxide dismutase mimics （ SODM ） on protective enzyme activities of rice during filling pe- riod. [ Method] Hybrid rice and conventional rice varieties...[ Objective ] This study aimed to investigate the effect of superoxide dismutase mimics （ SODM ） on protective enzyme activities of rice during filling pe- riod. [ Method] Hybrid rice and conventional rice varieties were used as experimental materials and sprayed with SODM. Activities of protective enzymes and con- tents of ASA, MDA, H20~ and 02- in rice leaves were determined. [ Result] SODM can significantly increase SOD, POD and CAT activities in leaves of rice dur- ing titling period, maintain the MDA, H202 and 02- contents at retatively low levels, and reduce rice peroxidation. [ Conclusion] SODM enhances the activities of antioxidant protective enzymes in plants and the ability to scavenge reactive oxygen free radicals, thereby delaying the senescence of rice and enhancing the ability of photosynthesis in the middle to late tilling period, which is conducive to improve the yield and quality of rice.展开更多
基金Supported by Science and Technology Achievement Transformation Project of Daqing City(SCG2008-028)Science and Technology Achievement Transformation Fund of Heilongjiang Province(NB08B014)+1 种基金Personnel Service Enterprise Project of Ministry of Science and Technology(2009GJB20016)Scientific and Technological Achievement Promotion Project of Heilongjiang Province(TC10B1104)
文摘[ Objective ] This study aimed to investigate the effect of superoxide dismutase mimics （ SODM ） on protective enzyme activities of rice during filling pe- riod. [ Method] Hybrid rice and conventional rice varieties were used as experimental materials and sprayed with SODM. Activities of protective enzymes and con- tents of ASA, MDA, H20~ and 02- in rice leaves were determined. [ Result] SODM can significantly increase SOD, POD and CAT activities in leaves of rice dur- ing titling period, maintain the MDA, H202 and 02- contents at retatively low levels, and reduce rice peroxidation. [ Conclusion] SODM enhances the activities of antioxidant protective enzymes in plants and the ability to scavenge reactive oxygen free radicals, thereby delaying the senescence of rice and enhancing the ability of photosynthesis in the middle to late tilling period, which is conducive to improve the yield and quality of rice.
