弯叶画眉草对盐胁迫的生理响应  

Physiological responses of Eragrostis curvula to salt stress

作　　者：雷泽湘[1] 费永俊[2] 胡南[2] 

机构地区：[1]仲恺农业技术学院环境科学与工程系,广东广州510225 [2]长江大学园艺园林学院,湖北荆州434025

出　　处：《福建农业学报》2008年第1期68-71,共4页Fujian Journal of Agricultural Sciences

基　　金：湖北省科技厅攻关项目(2002AA3001C99);湖北省教育厅重大科研项目(2002Z0007);湖北省涝渍灾害与湿地农业重点实验室开放基金(HNKFJ2002C03)

摘　　要：对弯叶画眉草进行盐度梯度的胁迫试验。研究发现,其叶绿素含量和脯氨酸含量在盐度为1.0%时相对迅速降低,在2.0%盐度时则相对增加;SOD活性和细胞质膜相对透性随着盐浓度的升高而增加,在2.0%盐浓度梯度时达到最大值,然后开始降低。表明盐胁迫的强度是影响弯叶画眉草生长的关键因素。Under artificial conditions, a salt stress experiment on Eragrostis curvula was conducted by irrigating with 0 %, 0.5%, 1.0 %, 1.5%, 2.0 % and 2.5% NaCl solutions. The results showed that chlorophyll and proline contents increased rapidly at the 2. 0% salinity, and reduced rapidly at 1. 0%; and SOD activity and the relative plasmalemma permeability increased with increasing salinity, plateaued at 2.0% and then started to decline. The results demonstrated that NaCl concentration was a key factor affecting the growth of E. curvula.

关 键 词：弯叶画眉草 盐胁迫 盐度 生理指标 

分 类 号：Q945[生物学—植物学] S54[农业科学—作物学]