汞对小麦幼苗生长发育和生理功能的影响  

Effect of Mercury on the Growth and Physiological Function of Wheat Seedlings

作　　者：张志杰[1] 吕秋芳[1] 方芳[1] 

机构地区：[1]西安冶金建筑学院环境工程系

出　　处：《环境科学》1989年第4期10-13,共4页Environmental Science

摘　　要：本文比较系统地研究了汞对小麦幼苗生长发育和生理功能的影响。汞处理的小麦发芽率、幼苗生长发育受到抑制,蒸腾强度、叶绿素含量降低。不同处理的小麦幼苗呼吸强度也发生了明显地变化,其影响程度与苗龄有关,汞处理还有诱导小麦幼苗过氧化物酶同工酶产生新谱带的作用,使小麦幼苗过氧化物酶同工酶带增加了两条,酶的活性也有所变化。这些特性都是小麦幼苗对汞伤害的生理反应。It has been observed that mercury depressed the germinant rate of wheat and its seedling growth, decreased its transpiration and chlorophyll content. Degrees of the influence was directly related with the mercury concentrations in wastewater and the content of it in the seedlings. In low concentration of mercury, the respiratory rate of seedlings increased, but it decreased or increased considerably in accordance with its high concentrations. Moreover, the respiratory rate in the growth and stages of the seedlings. The result showed that mercury caused a change of peroxidase isozyme pattern. The effects of mercury on wheat seedlings were a physiologicalreaction due to injury of mercury.

关 键 词：汞 小麦 幼苗 生理 

分 类 号：S512.101[农业科学—作物学]