Study on Difference on Cadmium Accumulation in Various Zizania latifolia Organs under Cadmium Stress
LIU Ben-wen et al(Xuzhou Vocational College of Bioengineering,Xuzhou,Jiangsu 221006)
[Objective] The purpose was to seek for the enrichment and distribution law of cadmium(Cd2+) in Zizania latifolia plant.[Method] With single-harvested variety Jiangshujiao and double-harvested variety Fenghongzao of Z.latifolia as tested materials,the stress treatment of adding 100 mg/L Cd2+ in soil was used and the Cd2+ accumulation amounts in the leaf,shortened stem and root of Z.latifolia on 7th day after the stress treatment were determined.[Result] As the time of Cd2+ stress treatment increased,the Cd2+ accumulation amounts in the leaf,shortened stem and root of the Z.latifolia varieties showed increasing trend;the Cd2+ accumulation amounts in different vegetative organs of Z.latifolia showed to be root shortened stem leaf and Cd2+ accumulation amount in Fenghongzao was higher than that in Jiangshujiao among varieties.On the 7th day of Cd2+ stress treatment,the enrichment coefficients on Cd2+ in various Z.latifolia organs showed to be root shortened stem leaf and that in Fenghongzao were higher than that in Jiangshujiao among varieties,indicating that the adsorption and accumulation capacities of Fenghongzao on Cd2+ were stronger than that of Jiangshujiao.[Conclusion] Under Cd2+ stress,the capacities of adsorption and accumulation on Cd2+ in various vegetative organs had significant difference among Z.latifolia varieties.
【CateGory Index】： X173