华北农学报2012，Vol.27Issue(6)：107-112,6.
干旱胁迫和复水对扁蓿豆幼苗生理特性的影响
Effects of Drought Stress and Rehydration on Physiological Characteristics of Medicago ruthenica Seedling
摘要
Abstract
The drought resistance of 6 germplasm materials of Medicago ruthenica was identified and evaluated using simulated drought stress and rehydration in a green house. The relative water content of leaves,cell membrane permeability,maiondialdehyde content, proline content and soluble proiein content were measured at 1 ,4,7,10 d of drought stress and 2 days after rehydration. The relative water content of Medicaga ruthenica leaves decreased with drought stress enhanced,but rapid recovery after rehydration. Cell membrane permeability,malondialdehyde content and soluble protein content increased with drought stress enhanced,but proline content was first decreased and then increased. Proline content was the moat sensitive to drought stress in five physiological indexes. The three drought resistant classes :high drought resistance ( MR4 and MR5 ) .medium drought resistance ( MR 1 , MR2 and MR3 ) and weak drought resistance ( MR6)were classified using the above 5 physiological indexes by the Euclidean distance clustering method.关键词
扁蓿豆/干旱胁迫/复水/生理特性Key words
Medicago ruthenka (Linn. )Trautv. / Drought stress/ Rehydration / Physiological characteristics分类
农业科技引用本文复制引用
蔡丽艳,孙启忠,李志勇,李鸿雁,师文贵,刘磊..干旱胁迫和复水对扁蓿豆幼苗生理特性的影响[J].华北农学报,2012,27(6):107-112,6.基金项目
农业部农作物种质资源保护与利用项目(NB2012-2130135-33) （NB2012-2130135-33）
农业部牧草种质资源保护项目(2012-15) （2012-15）
内蒙古自冶区科技计划项目(优良牧草新品种土默特扁蓿豆标准化生产示范) （优良牧草新品种土默特扁蓿豆标准化生产示范）
