在紫外辐射B胁迫下钙对大豆幼苗若干生物学特性的影响  

Effects of calcium on biological characteristics of soybean seedlings under UV-B stress

作　　者：任红玉[1] 李东洺[1] 吴志光[1] 徐海明[1] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030

出　　处：《东北农业大学学报》2009年第7期5-9,共5页Journal of Northeast Agricultural University

基　　金：黑龙江省博士后基金(LBH-Z05086);东北农业大学青年基金;东北农业大学大学生科技创新基金(20060303)

摘　　要：采用室内水培的试验方法,初步探讨了钙离子(0、5、15mmo·lL-)1对紫外辐射B(UV-B,280～320nm)胁迫下大豆幼苗若干生物学特性的影响。结果表明,在UV-B胁迫下,15mmol·L-1钙离子处理的大豆幼苗叶鲜重的降幅低,且其株高有所增加,POD活性降幅低,可溶性蛋白含量和SOD活性增幅高。表明钙具有缓解紫外辐射伤害大豆幼苗的效应,这同钙离子对大豆幼苗部分生理生化指标的影响有关。Under enhanced ultraviolet-B radiation（UV-B： 280-320 nm）, effects of calcium on biological characteristics of soybean seedlings were investigated. The results showed that calcium alleviated the inhibition of soybean seedlings on growth under UV-B stress. The decreasing degree of leaves weight for soybean seedlings treated with 15 mmol. L^-1 calcium concentration was significantly lower than that of 5 and 0 mmol· L^-1 calcium concentration. The height of the seedlings treated with 15 mmolo L-1 calcium was promoted under UV-B stress. The decreasing degrees of POD activity for soybean seedlings treated with 15 mmol .L^-1 calcium concentration was significantly lower, whereas the increasing degrees of soluble protein content and SOD activity were higher. The experiment proved that calcium could mitigate the damage of ultraviolet-B radiation on soybean seedlings, and this effect was related to that calcium affected physiological and biological characteristics of soybean seedlings.

关 键 词：钙 紫外辐射B(UV—B)胁迫 大豆幼苗 生物学特性 

分 类 号：S565.1[农业科学—作物学] S601