农作物Cd耐性的种内和种间差异Ⅱ．种内差  

Inter-and intraspecific differences of crops in Cadmium tolerance Ⅱ.Intraspecific difference

作　　者：杨居荣[1] 贺建群[1] 黄翌 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栽培研究所

出　　处：《应用生态学报》1995年第S1期132-136,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金

摘　　要：对２８个小麦、１４个大豆品种（或品系）的幼苗培养试验表明，作物对Ｃｄ的耐性具有明显的种内差异；耐性品种与其吸收Ｃｄ相对较少或向地上部运移比例较低有关；部分品种虽吸收Ｃｄ量较高，但仍能正常生长，推断其具有使Ｃｄ转化为活性较低形态，从而减轻毒害的机制．Culture experiment with seedlings of 28 wheat and 14 soybean varieties or strains showsthat there exists a significant intraspecific difference in Cd tolerance. The tolerance of varieties are related to their lower Cd content or lower transported 'Cd proportion in theiraboveground parts. Some varieties with higher absorbed Cd can still grow normally, andthus, may have a Physiological mechanism to weaken the toxicity of Cd through loweringits activity.

关 键 词：农作物 Cd耐性 

分 类 号：S311[农业科学—作物栽培与耕作技术]