ZhiQuan, L. and WeiBin, W. and WenJian, L.
(2012)
Effects of heavy-ion beams irradiation on survival rate and antioxidant enzymes of sweet sorghum seedlings.
Agricultural Science & Technology - Hunan , 13 (11).
pp. 2257-2260.
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Abstract
Objective: This study aimed to investigate the effects of heavy-ion beams irradiation on the seed germination potential, survival rate, antioxidant enzyme activities and lipid peroxidation of sweet sorghum. Method: The dry seeds were irradiated by 12C6+ heavy ion beams with absorbed doses: 0, 40, 80, 120, 160 and 200 Gy, respectively. Then, the seed germination potential, survival rate, antioxidant enzyme activities and lipid peroxidation of sweet sorghum were measured. Result: Heavy-ion beams irradiation exhibited different influence on germination potential and survival rates. Germination rate showed a downward trend, but the corresponding survival curve of seedlings was saddle-shaped. The activities of SOD, POD, CAT and ASA-POD changed in different trends as well. The MDA content rose toward increasing irradiation dose, suggesting that high dose of heavy-ion beams irradiation enhanced the damage to membrane of sweet sorghum seedlings. Conclusion: After being irradiated, germination potential and survival rates of sweet sorghum were decreased, and antioxidant enzymes activity changed greatly. This study laid the basis for further work on breeding and improvement of sweet sorghum irradiated by 12C6+ heavy ion beams.
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