作　　者： ; ; ; ; ; (吴保存）;

机构地区： 河南农业大学

出　　处： 《河南科学》 2005年第5期679-682,共4页

摘　　要： 采用水培试验,利用感应耦合等离子体,研究了不同浓度镉胁迫下烟草(Nicotiana tabacum L.)营养器官发育的变化及镉元素的积累及其对一些矿物质元素含量和分布的影响.结果表明镉胁迫强烈抑制烟草营养器官的生长发育,明显减少烟草植株体内的K、P、Ca等大量元素的含量,且含量随镉处理浓度的增高而减少,同时镉胁迫增加Zn、Fe、Cu、Al等微量元素的含量.在镉Cd 3 mg/L处理时可增加叶片中P、Ca、Mg、Fe、Cu、Zn、Al元素的含量,但在Cd 30 mg/L处理时则减少叶片中P、Ca、Mg、Fe、Cu、Al的含量. Tobacco seedlings were grown hydroponically for 40 days. The development of tobacco vegetative organs, accumulation of Cd, some mineral elements content and distribution were studied under Cd stress. The mineral elements of ,samples were assayed by inductively coupled plasma （ICP）. The result indicated that Cd greatly affected development of tobacco vegetative organs. The elements of K, P, Ca in tobacco decreased obviously under Cd stress. The content of K, P, Ca decreased along with increasing concentration of Cd. Meanwhile, the elements content of Zn, Fe, Cu, Al increased under Cd stress. The content of P,Ca,Mg,Fe, Cu,Zn,Al increased under Cd 3 mg/L treatment, but the content of P,Ca,Mg,Fe,Cu,Zn,Al decreased under Cd 30 mg/L treatment.

关 键 词： 镉胁迫 烟草 营养器官 发育 矿物质元素

领　　域： [环境科学与工程]