Effect of aging-resistance of ultradried safflower seeds and its mechanism
1999
Hu Jiashu (Hua Jia Chi Campus of Zhejiang Univ., Hangzhou (China). Inst. of Biochemistry) | Zhu Cheng
Experiments were conducted with safflower seeds rich in linoleic acid. Seed viability, seed vigor, aging-tolerance, morphological integrity of cells, lipid peroxidaion 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-accelerating treatment (Figs. 1-3). (2) During ultradrying of safflower seeds, their content of free radicals increased, but decreased on rehydration before germination, which had a scavenging action (Table 1; Figs. 6, 7). (3) The active-oxygen-scavenging system retained its capability during storage in an ultradry state (Table 2; Figs. 4, 8)
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