[Objective] To investigate the effects of different ozone concentrations （30, 60, 80, 100 and 120 μg/L） on the physiological and biochemical characteristics of M9T337, so as to provide theoretical basis for breedin...[Objective] To investigate the effects of different ozone concentrations （30, 60, 80, 100 and 120 μg/L） on the physiological and biochemical characteristics of M9T337, so as to provide theoretical basis for breeding anti-ozone dwarfing root- stocks. [Method] The effects of different concentrations of ozone on chlorophyll con- tent, antioxidant enzyme activity, malondialdehyde （MDA） and soluble protein content of M9T337 were studied by potting dwarfing rootstock M9T337 as test material. [Result] With the increase of ozone concentration, the content of chlorophyll in M9T337 leaves decreased gradually. The activity of SOD （superoxide dismutase） and CAT （catalase） increased first and then decreased, while POD （Peroxidase） ac- tivity and MDA （malondialdehyde） content were gradually increased. [Conclusion] The comprehensive analysis of the indicators indicated that the potted M9T337 could tolerate the low concentration （〈80 μg/L） ozone stress in the short time （〈3 h）, and it would cause serious injury to M9T337 when the ozone concentration ex- ceeded 80 μg/L.展开更多
基金Supported by the National Natural Science Foundation of China[(CN)(31572091)]the Natural Science Foundation of Shandong Province(ZR2015CQ016)~~
文摘[Objective] To investigate the effects of different ozone concentrations （30, 60, 80, 100 and 120 μg/L） on the physiological and biochemical characteristics of M9T337, so as to provide theoretical basis for breeding anti-ozone dwarfing root- stocks. [Method] The effects of different concentrations of ozone on chlorophyll con- tent, antioxidant enzyme activity, malondialdehyde （MDA） and soluble protein content of M9T337 were studied by potting dwarfing rootstock M9T337 as test material. [Result] With the increase of ozone concentration, the content of chlorophyll in M9T337 leaves decreased gradually. The activity of SOD （superoxide dismutase） and CAT （catalase） increased first and then decreased, while POD （Peroxidase） ac- tivity and MDA （malondialdehyde） content were gradually increased. [Conclusion] The comprehensive analysis of the indicators indicated that the potted M9T337 could tolerate the low concentration （〈80 μg/L） ozone stress in the short time （〈3 h）, and it would cause serious injury to M9T337 when the ozone concentration ex- ceeded 80 μg/L.
