Zn^(2+)活度对不同耐低锌水稻基因型生长及锌吸收的影响  

Effects of Zn^(2+) activity on seedling growth and Zn uptake of rice differing in resistance to Zn-deficit.

作　　者：陈光才[1] 李迎春[1] 王人民[2] 杨肖娥[3] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,富阳311400 [2]浙江大学农学系,杭州310029 [3]浙江大学资源科学系,杭州310029

出　　处：《中国生态农业学报》2006年第2期56-58,共3页Chinese Journal of Eco-Agriculture

基　　金：国家杰出青年基金项目(39925024)部分研究内容

摘　　要：试验研究Zn2+活度对不同耐低Zn水稻基因型生长及Zn吸收的影响结果表明,Zn2+活度较低时水稻生长发育受抑,其株高、叶片数、干物质积累量均随Zn2+活度的降低而下降,而根冠比、地上部和地下部Zn浓度之比则升高,且低Zn条件下耐低Zn水稻基因型“IR8192”的Zn转运能力、维持根系生长能力均高于Zn敏感水稻基因型“IR26”。The effects of Zn^2＋ activity on seedling growth and Zn uptake of rice differing in resistance to Zn-defieit show that when the Zn^2＋ activity is low, the growth and development of rice is inhibited; the plant height, leaf number, and dry matter accumulation of rice decrease with the decreasing of Zn^2＋ activity, while the ratio of root to shoot and the Zn concentration ratio of shoot to root increase; Zn transferring capacity, supporting the root growth capacity of Zn-efficient rice genotype＇ IR8192＇are higher than those of Zn-inefficient rice genotype＇ IR26＇as Zn deficiency.

关 键 词：水稻 基因型 Zn^2+活度 Zn缺乏 

分 类 号：S511[农业科学—作物学] TS255.5[轻工技术与工程—农产品加工及贮藏工程]