文献类型：期刊文献

中文题名：湿地植物在盐胁迫下的生理代谢响应研究

英文题名：Physiological Response of Wetland Vegetation in Salt Stress Environment

作者：韦玮[1] 李胜男[1] 朱耀军[1] 郭嘉[1] 于一雷[1]

第一作者：韦玮

机构：[1]中国林业科学研究院湿地研究所湿地生态功能与恢复北京市重点实验室

年份：2015

卷号：0

期号：2

起止页码：125-129

中文期刊名：林业资源管理

外文期刊名：Forest Resources Management

收录：北大核心:【北大核心2014】；

基金：948项目"湿地水生植物根系原位动态监测技术引进"(2013-4-77)

语种：中文

中文关键词：湿地植物;盐胁迫;耐盐性;生物量

外文关键词：wetland vegetation,salt stress,salt tolerance,biomass

分类号：X173

摘要：采用3.5%的Na Cl溶液分别对碱蓬、三七景天和星星草等3种植物进行浇灌,研究植物在生长过程中,其植株和土壤中离子含量、生物量、土壤p H值、全盐量等的变化,结果表明:在盐胁迫环境下,3种植物均表现出很强的耐盐性,碱篷植株体内可聚集大量的Cl-和Na+,但是,在碱蓬生长的土壤中含有很高的交换性钠含量,因其不断进入土壤胶体,从而加重了土壤碱性化程度;三七景天在生长过程中可有效降低土壤中的全盐量及交换性钠离子含量,对降低土壤盐碱性具有较好的作用;星星草通过迅速增加其体内可溶性糖含量来降低其渗透势,缓解体内盐分浓度,以抗盐胁迫环境,且能积累较高的干物质,保持相对稳定的含水率。因此,这3种植物都是较好的耐盐植物,可用以进行耐盐植物资源的开发和选育。
Comparing the ion content,biomass,soil pH,total salt quantity etc.of three plant species in the higher salt condition of 3.5% NaCl solution,Suaeda glauca,Sedum spetabiles and Puccinellia tenuifolia showed stronger salt tolerance in salt stress environment in growth process.Among them,Suaeda glauca displayed a stronger ability to collect Na +and K +in the plant while it produced a large number of ex-changeable sodium,which could aggravate soil alkalization degree.Sedum spetabiles has a good effect on reducing soil salinization by reducing the total salt content and exchangeable sodium ion content in soil in growth process.Puccinellia tenuifolia resisted the salt stress environment by rapidly increasing the soluble sugar content to lower the osmotic potential and eased the body of salt concentration.It can accumulate higher dry matter in the plant as well as maintain a relatively stable water content.Therefore,the 3 species are excellent salt tolerant plants,which can be developed and cultivated.