文献类型：期刊文献

中文题名：云南元谋干热河谷地区6种植物种子的抗逆生理特性

英文题名：Physiological Characteristics of Stress-resistance for Seeds of Six Species of Plants in Yuanmou Dry and Hot Valley of Yunnan

作者：崔凯[1] 李昆[1] 孙永玉[1] 杨文云[1] 刘方炎[1] 李立[1]

第一作者：崔凯

机构：[1]中国林业科学研究院资源昆虫研究所

年份：2008

卷号：36

期号：11

起止页码：55-58

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家科技部"十一五"科技支撑专题(2006BAD03A0101)和(2006BAD03A0304)联合资助

语种：中文

中文关键词：干热河谷;种子抗逆生理;膜脂过氧化;膜保护酶系统

外文关键词：Dry and hot valley; Stress-resistant physiology; Membrane peroxidation; Membrane protective enzymes

分类号：Q945.78

摘要：以云南元谋干热河谷地区的苏门答腊金合欢、新银合欢、木豆、车桑子、余甘子和山合欢6种植物种子为试材,在4月份干热气候的地表环境下,测定各类种子的生活力、呼吸代谢、渗透调节物质、膜脂过氧化和膜保护酶系统活性。结果表明,随着处理时间的延长,各类种子的生活力显著下降;相对电导率、脯氨酸(Pro)和丙二醛(MDA)含量呈现持续增加趋势;呼吸强度,超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,可溶性糖含量呈单峰曲线变化;种子抵御逆境的能力是其呼吸代谢、膜保护酶系统、保护性物质协同作用的结果;影响各类种子抗逆能力的关键物质并不一致。
Seed vigor, respiration, osmotic adjustment, membrane peroxidation and activities of membrane protective enzyme system in seeds of 6 species of plants were studied in April in Yuanmou dry-hot valley of Yunnan. Results showed that, with the prolonging of treating time, the seed vigor represented a decreasing trend and the relative electrical conductivity, proline content, and MDA content exhibited an increasing trend. The respiration intensity, SOD activity, POD activity, CAT activity and soluble sugar content showed a single-peak curve. The stress-resistant capability of seeds depended on the integrated action of respiration, activity of membrane protective enzyme and protective matter. Also, the crucial matters affecting the stress-resistant capability of the seeds of 6 species of plants were different.