Chinese Agricultural Science Bulletin ›› 2009, Vol. 25 ›› Issue (1): 119-124.
Special Issue: 园艺
• 植物生理科学 • Previous Articles Next Articles
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Abstract: The effects of Cd2+on Dwarf beans seed germination and seedling growth were studied with water culture experiments. The results showed that when the concentration of Cd2+at low level, the effects of Cd2+on the seed germination and seedling growth were not significant. Seeds germination were activated at a certain extent when Cd2+ concentration ranged from 0.05mg/L to 0.5 mg/L concentrations. The roots and Hypocotyls of seedling exhibited a significant decrease in growth at higher level of Cd2+concentrations(5~100mg/L).The activities of peroxidase(POD), superoxide dismutase(SOD), catalase(CAT)could be enhanced at low Cd2+concentrations but inhibited at higher concentration. The activities of POD, CAT were more inhibited in roots than in Hypocotyls at the same Cd2+concentrations, while that of SOD was higher in roots than in Hypocotyls when the concentration of Cd2+ was more than 0.5mg/L. The malondialdehyde(MDA) contents were continuously increased with Cadmium exposure in both roots and Hypocotyls.
CLC Number:
X171.5
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https://www.casb.org.cn/EN/Y2009/V25/I1/119