Mechanism of Effect of Lanthanum Nitrate on Vigor of Aged Rice Seeds
来源期刊：JOURNAL OF RARE EARTHS2000年第3期
论文作者：ZHAO Gui-wen HONG Fa-shui WEI Zheng-gui
Key words：rare earths; lanthanum nitrate; rice seeds; protective enzyme;
Abstract: The effect of La(NO3)3 on natural or artificial aged rice seeds vigor was studied. The results show that the germination rate, germination index and vigor index of aged rice seed increase. Activities of superoxide dismutase, catalase and peroxidase are enhanced. ·O2- and malond ialdehyde contents decrease in germinating stage of aged rice seed, and cell membrane permeability of aged rice seeds reduces by treating with La(NO3)3. The vigor increase of rice natural aged seed is greater than that of artificial aged rice seeds by treating with La(NO3)3.
ZHAO Gui-wen1，HONG Fa-shui2，WEI Zheng-gui1
(1.Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;
2.Department of Biology, Suzhou University, Suzhou 215151, China)
Abstract:The effect of La(NO3)3 on natural or artificial aged rice seeds vigor was studied. The results show that the germination rate, germination index and vigor index of aged rice seed increase. Activities of superoxide dismutase, catalase and peroxidase are enhanced. ·O2- and malond ialdehyde contents decrease in germinating stage of aged rice seed, and cell membrane permeability of aged rice seeds reduces by treating with La(NO3)3. The vigor increase of rice natural aged seed is greater than that of artificial aged rice seeds by treating with La(NO3)3.
Key words:rare earths; lanthanum nitrate; rice seeds; protective enzyme;
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