锌肥对不同基因型大麦吸收积累镉的影响

摘要/Abstract

摘要： 对土壤添加不同Zn、Cd条件下两种基因型(Sahara和Clipper)大麦对Zn、Cd的吸收积累研究表明,在本实验条件下土壤添加Zn、Cd对植物地上部生物量没有显著影响,但土壤添加Zn抑制植物根系生长.在土壤不缺Zn情况下添加Zn<20mg·kg^-1时并没有对大麦体内Cd浓度产生显著影响;当土壤Zn添加量达到40mg·kg^-1时,植物体内Cd浓度明显降低.植物吸收Cd的总量随着土壤添加Zn的增加而显著下降,这主要是由于根系生物量的下降所致.两个基因型大麦品种Zn效率存在显著差异,但这一差异对植物吸收Cd的总量没有影响.Zn高效品种Sahara根部Cd浓度显著低于Clipper.

Abstract: Apot experiment was carried out in a greenhouse to investigate the interactive effects of Zn-Cd on the growth and the uptake of Cd and Zn by two barley genotypes (Sahara and Clipper).The results showed that under the conditions of this experiment,adding Cd and Zn had no significant effect on the shoot biomass of either cultivars, but applying Zn tended to reduce the root biomass of both cultivars. With the amount of less than20 mg穔g^-1, Zn addition did not affect Cd concentration in plant tissues; while at 40 mg穔g^-1,it decreased Cd concentrations significantly in plant tissues of both cultivars. Total Cd uptake by both cultivars decreased with increasing in Zn application, mainly due to the decrease in root biomass. The two genotypes were significantly different in Zn uptake, but this difference did not affect Cd uptake. Cd concentration in roots of Zn-efficient cultivar Sahara was lower than that of Zn-inefficient cultivar Clipper.

中图分类号:

X171.5

朱永官. 锌肥对不同基因型大麦吸收积累镉的影响[J]. 应用生态学报, 2003, (11): 1985-1988.

Zhu Yongguan. Effect of zinc fertilization on cadmium uptake and accumulation in two barley (Hordeum vulgare) cultivars[J]. Chinese Journal of Applied Ecology, 2003, (11): 1985-1988.

参考文献

[1] Cai S-W,Yue L,Hu Z-N,et al.1990.Cadmium exposure and health effects among residents in an irrigation area with ore dressing wastewater.Sci Total Environ,90: 67～73
[2] Choudhary M,Bailey LD,Grant CD.1994.Effect of zinc on cadmium concentration in the tissue of durum wheat.Can J Plant Sci,74: 549～552.
[3] Grant CD,Bailey LD.1997.Effects of phosphorus and zinc fertilizer management on cadmium accumulation in flaxseed.J Sci Food Agric,73:307～314
[4] Grant CD,Bailey LD,McLaughlin MJ,Singh BR.1999.Management factors which influence cadmium concentrations in crops.In: McLaughlin MJ and Singh BR eds.Cadmium in Soils and Plants Dordrecht & Boston : Kluwer Academic Publishers.
[5] Harris NS,Taylor GJ.2001.Remobilization of cadmium in maturing shoots of near isogenic lines of durum wheat that differ in grain cadmium accumulation.J Exp Bot,52: 1473～1481
[6] Li H-F(李花粉),Zheng Z-Y(郑志宇),Zhang F-S(张福锁),et al.1999.Effect of iron nutritional status on the uptake of Cd from different compounds by wheat plant.Acta Ecol Sin(生态学报),19(2):170～173 (in Chinese)
[7] Nan ZR,Li JJ,Zhang JM,et al.2002.Cadmium and zinc interactions and their transfer in soil-crop system under actual field conditions.Sci Total Environ,285(1-3):187～195.
[8] Nordberg GF,Jin T,Kong Q,et al.1997.Biological monitoring of cadmium exposure and renal effects in a population group residing in a polluted area in China.Sci Total Environ,199:111～114
[9] Oliver DP,Hannam R,Tiller KG,et al.1994.The effects of zinc fertilization on cadmium concentration in wheat grain.J Environ Qual,23:705～711.
[10] Oliver DP,Wilhelm NS,McFarlane JD,et al.1997.Effect of soil and foliar applications of zinc on cadmium concentration in wheat grain.Aust J Exp Agric,37:677～681
[11] Wang K-R(王凯荣),Gong H-Q(龚惠群).1996.Comparative studies on the difference of the uptake and redistribution of environmental Cd by two genic rice.Agro-Environ Prot(农业环境保护),15(4):145～149 (in Chinese)
[12] Wang K-R(王凯荣).1997.Status of Cd pollution and strategy of the treatment and utilization of Cd pollution farmlands iin China.Agro-Environ Prot(农业环境保护),16(6): 274～278 (in Chinese)
[13] Welch RM,Hart JJ,Norvell WA,et al.1999.Effects of nutrient solution zinc activity on net uptake,translocation,and root export of cadmium and zinc by separated sections of intact durum wheat (Triticum turgidum L.var durum) seedling roots.Plant Soil,208:243～250.
[14] Yang Z-M(杨志敏),Zheng S-J(郑绍建),Hu A-T(胡霭堂).1999.Advances on the study of interactions of phosphorus with zinc and cadmium in plants.Plant Nutr Fert Sci(植物营养与肥料学报),5(4):366～376 (in Chinese)
[15] Zhou Q-X(周启星),Gao Z-M(高拯民).1994.Interaction between Cd and Zn in seeds of crops and its mechanisms.Agro-Environ Prot(农业环境保护),13(4):148～151 (in Chinese)
[16] Zhou Q-X(周启星),Gao Z-M(高拯民).1995.Combined pollution and its indexes of Cd and Zn in soil-rice systems.Acta Pedol Sin(土壤学报),32(4):430～435 (in Chinese)
[17] Zhu Y-G,Smith FA,Smith SE.2002.Phosphorus efficiencies and their effects on Zn,Cu,and Mn nutrition of different barley (Hordeum vulgare) cultivars grown in sand culture.Aust J Agric Res,53: 211～216