5份不同来源扁蓿豆幼苗期的耐盐性比较  

Comparative Study on Salt Resistance of Five Different Medicao ruthenica at Seeding Stage

作　　者：于洁[1] 贾振宇[1] 黄帆[2] 王晓龙[3] 乔海龙 米福贵[1] 李鸿雁[2] 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019 [2]中国农业科学院草原研究所,内蒙古呼和浩特010010 [3]黑龙江省畜牧研究所,黑龙江齐齐哈尔161005 [4]赤峰市草原工作站,呼和浩特赤峰024000

出　　处：《草地学报》2016年第2期459-462,共4页Acta Agrestia Sinica

基　　金："十二五"农村领域国家科技计划课题(2013BAD01B0105);国家行业公益项目(201403048-5)资助

摘　　要：为探讨不同地区扁蓿豆(Medicago ruthenica)耐盐性的生理生化机制,采用盆栽法模拟盐碱地条件,观测不同盐浓度对扁蓿豆幼苗各生理指标的影响。结果表明,随着盐浓度的增加,扁蓿豆叶片内脯氨酸、丙二醛相对含量和细胞膜透性均不断增加,叶片含水量下降。5份供试扁蓿豆中,来源于乌兰察布市四子王旗的扁蓿豆耐盐性最强,而来源于通辽市大青沟自然保护区的扁蓿豆耐盐能力最弱。To explore the physiological and biochemical mechanisms of salt resistance of five different Medicao ruthenica at seeding pstage,the effect on physiological parameters of different salt concentrations in a potting experiment was studied.The results showed that with the increasing of salt concentration,the relative proline content,malondialdehyde content and cell membrane permeability increased,and the leaf water content declined.Among the five ecotypes of Medicago ruthenica,which came from Wulanchabu city Siziwang county had the strongest salt tolerant and which came from Daqinggou Nature Reserve in Tongliao had the weakest salt tolerant.

关 键 词：扁蓿豆 盐胁迫 生理生化 

分 类 号：Q945.78[生物学—植物学]