硒对盐胁迫下耐盐常夏石竹生物量和渗透物质含量的影响  

Effects of Selenium on Biomass and Osmoregulator in Salt-tolerant Dianthus plumarius Under Salt Stress

作　　者：王长泉[1] 刘涛[2] 

机构地区：[1]山东理工大学基建处,山东淄博255049 [2]山东理工大学生命科学学院,山东淄博255049

出　　处：《植物生理学通讯》2005年第3期325-327,共3页Plant Physiology Communications

基　　金：山东理工大学科研基金项目(4040-304037)。

摘　　要：培养基中加施适量外源硒能够显著提高能耐盐的常夏石竹生物量,过氧化物酶(POD)活性,K^+/Na^+比值,K^+、Na+、叶绿素和游离脯氨酸含量;降低质膜透性和可溶性糖含量;植株叶细胞质膜和液泡膜V-H+-ATP酶的活性增加。Salt-tolerant Dianthus plumarius variants were cultured in MS medium added 0.5% NaCl combinedwith different concentrations of selenium to study the effect of selenium nutrition on biomass and the osmo-regulator content and some other physiological indexs. Increase of selenium supply in the medium could signifi-cantly enhance the biomass, proline content, peroxidase (POD) activity, ratio of K+ and Na+, absolute contentsof K+ and Na+, leaf plasmalemma and tonoplast V-H+-ATPase activity, while the cell memberane permeability andsoluble sugar content decreased in salt-tolerant Dianthus plumarius variants.

关 键 词：常夏石竹 生物量 物质含量 耐盐 过氧化物酶(POD) 盐胁迫 K^+/Na^+ H^+-ATP酶 游离脯氨酸含量 渗透 可溶性糖含量 质膜透性 细胞质膜 外源硒 培养基 叶绿素 液泡膜 活性 适量 株叶 

分 类 号：S681.5[农业科学—观赏园艺]