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Effect of aging-resistance of ultradried safflower seeds and its machanism

Hu Jiashu, Zhu Cheng, Zeng Guangwen, Zheng Guanghua

Institute of Biochemistry,Zhejiang University Hua Jia Chi Campus.Hangzhou 310029,Zhejiang；China；Beijing Botanical Garden,Chinese Academy of Sciences.Beijing 100093

Abstract

Experiments were conducted with safflower seeds rich in linoleic acid. Seed viability, seed vigor, aging-tolerance, morphological integrity of cells, lipid peroxidation and free radical levels in ultradried seeds were determined. The results showed that (1) Ultradrying treatment was not injurious to safflower seeds, it did not induce any significant change either in germination rate or seed vigor. Furthermore, our experimental data indicated that ultradried seeds became more tolerant under aging-accel erating treatment. (2) During ultradrying of safflower seeds, their content of free radicals increased, but decreased on rehydration before germination, which had a scavenging action. (3) The active-oxygen-scavenging system retained its capability during storage in an ultradry state.

Key words: Ultradry;Safflower seed;Dehydrogenase;Catalase;Superoxide dismutase;Free radical

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Citing This Article：

Hu Jiashu, Zhu Cheng, Zeng Guangwen, Zheng Guanghua. Effect of aging-resistance of ultradried safflower seeds and its machanism. Acta Physiol Sin 1999; 51 (2): (in Chinese with English abstract).