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首页> 外文会议>2011 International Conference on Remote Sensing, Environment and Transportation Engineering >Effects of Cd contamination and physiological and biochemical characteristics on Brassica juncea
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Effects of Cd contamination and physiological and biochemical characteristics on Brassica juncea

机译：镉污染及生理生化特性对芥菜的影响

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Series of pot experiments were performed to determine the effects of cadmium in soil on chlorophyll content, CAT, POD and SOD activities in Brassica juncea. The results indicated that tolerance of Brassica juncea for Cd is stronger. It is able to burgeon and grow all right in the soil added Cd from mg·kg−1 to200mg·kg−1. The biomass of Brassica juncea takes on principle of parabola changes with Cd concentration in the soil. Nevertheless, Cd influences the growth stages of Brassica juncea to postpone its procreating growth. Cd concentration of Brassica juncea goes to increase with the content of Cd in the soil. The contents of Cd is 7.824 mg·kg−1∼102.672mg·kg−1 in the aboveground parts and 0.374 mg·kg−1∼191.910mg·kg−1 in the underground parts. The bioaccumulation factor of the ground part is falling and underground part is rising during the Cd is rising. Meanwhile, the translocation factor is 20.920∼0.535. It takes on gradually falling trend. The POD, CAT and SOD activities increased at lower Cd concentrations, but decreased at higher Cd concentrations. Added Cd in the soil is 120mg·kg−1, the POD, CAT and SOD activities is highest. The number of microorganisms is Bacteria Actinomycetes>Mould. The number of microbes is increasing during the Cd added in the soil. When the added Cd is more than 160mg·kg−1, the number of microbes is going down.
机译：进行了一系列盆栽试验，以确定土壤中镉对芥菜油菜叶绿素含量，CAT，POD和SOD活性的影响。结果表明，芥菜对镉的耐受性较强。它能够在Cd从mg·kg -1 到200mg·kg -1 的土壤中迅速生长。芥菜油菜的生物量具有抛物线随土壤中Cd浓度变化而变化的原理。然而，镉会影响芥菜的生长阶段，推迟其促成生长。芥菜中Cd的含量随土壤中Cd含量的增加而增加。地上部分Cd含量为7.824 mg·kg -1 〜102.672mg·kg -1 ，0.374 mg·kg -1 地下约191.910mg·kg -1 。 Cd上升时，地上部分的生物富集因子下降，地下部分上的生物积累因子上升。同时，易位因子为20.920〜0.535。它呈逐渐下降的趋势。在较低的Cd浓度下，POD，CAT和SOD活性增加，而在较高的Cd浓度下，POD，CAT和SOD活性降低。土壤中镉的添加量为120mg·kg -1 ，POD，CAT和SOD活性最高。微生物的数量是细菌放线菌>霉菌。在土壤中添加镉的过程中，微生物的数量正在增加。当添加的镉超过160mg·kg -1 时，微生物数量减少。

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