农作物Cd耐性的种内和种间差异Ⅰ．种间差  

Inter-and intraspeific differences of crops in cadmium toleranceⅠ.Interspecific difference

作　　者：杨居荣[1] 贺建群[1] 黄翌[1] 蒋婉茹 

机构地区：[1]北京师范大学环境科学研究所,中国农业科学院作物育种栽培研究所

出　　处：《应用生态学报》1994年第2期192-196,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金

摘　　要：对８个科１４个种作物的栽培试验表明，作物对Ｃｄ的耐性具有明显的种间差异，禾本科作物的耐性普遍高于蔬菜类；作物的耐性与体内Ｃｄ的平均吸收量无显著相关，而与地上部吸收量所占比例呈显著负相关；Ｃｄ影响下，耐性不同作物体内的一些生理代谢变化有一定差别．species of crops in 8 families were found having a significant interspecific difference in Cd tolerance. Gramineous crops have a higher tolerance than vegetables.The tolerance is less related to the Cd content of crops,but negatively related to its proportion accumulated in their aboveground parts. After treated with Cd,crops with different strength of cadmium tolerance changed some of their physiological metabolisms in different ways.

关 键 词：重金属 作物 镉 耐性 

分 类 号：S314[农业科学—作物栽培与耕作技术]