钙对萝卜幼苗抗寒性及某些生理指标的影响  

EFFECTS OF CALCIUM ON CHILLING RESISTANCE OF RADISHSEEDINGS AND SOME PHYSIOLOGICAL INDEXES

作　　者：由继红[1] 陆静梅[1] 杨文杰[1] 

机构地区：[1]东北师范大学生命科学学院,长春130024

出　　处：《植物研究》2001年第3期409-412,共4页Bulletin of Botanical Research

摘　　要：研究结果表明钙能够提高萝卜幼苗的抗寒性 ,同时与抗寒性有关某些生理指标也受到影响。在低温胁迫后及恢复生长后处理组的萝卜幼苗的超氧物歧化酶、过氧化物酶、抗坏血酸过氧化物酶、过氧化氢酶的活性都比对照组高 ;在低温胁迫后处理组的脯氨酸及抗坏血酸的含量均比对照组高 ,但处理组萝卜幼苗的丙二醛含量却比对照组低。Effects of calcium on chilling resistance of radish seedlings and some physiological indexes were studied. The result shows that chilling resistance of the radish seedlings is enhanced and some physiological indexes are affected seeds are pretrated by calcium. The activities of SOD, POD, CAT, AsA-POD of the treated group are ligher than the comparative group's after the seedlings are treated by low temperature stress and after growing at normal temperature. The contents of proline and ascorbic acid of the treated group are higher than the comparative group after low temperature. But, concent of malondialdhyda of the treated group is lower than the comparative group after low temperature. This shows that effect of calcium on chilling resistance of radish seedlings is probably related to preventing lipid peroxidation.

关 键 词：钙 萝卜幼苗 抗寒性 生理指标 

分 类 号：Q948.112.2[生物学—植物学] S631.1[农业科学—蔬菜学]