海滨锦葵的抗盐特性  

Salt Tolerance Characteristics of Kosteletzkya virginica (L.) Presl

作　　者：党瑞红[1] 周俊山[1] 范海[1] 

机构地区：[1]山东师范大学逆境植物重点实验室

出　　处：《植物生理学通讯》2008年第4期635-638,共4页Plant Physiology Communications

基　　金：国家重点基础研究发展规划(G1999011700);国家高技术研究发展计划(863计划)(2007AA091701)

摘　　要：在温室沙培条件下,用含有0、100、200、300mmol·L-1NaCl的Hoagland培养液分别处理已长出8片真叶的海滨锦葵幼苗,15d后取样,测定根、茎基、茎、叶柄和叶中无机离子(Na+、K+、Ca2+、Cl-、NO3-)含量,以及叶和根中可溶性有机物质脯氨酸(Pro)、总游离氨基酸(FAA)、可溶性糖(SS)和有机酸(OA)含量,计算无机离子和有机物质对渗透势的影响的结果表明:海滨锦葵具有拒盐特性,随着盐浓度的升高,Na+和Cl-主要分布在海滨锦葵的根、茎和叶柄中;海滨锦葵的渗透调节物质以无机离子为主。In the green house, eight euphylla of seedlings of Kosteletzkya virginica were cultivated with sand culture. Afterward the seedlings were watered with Hoagland culture solution containing 0, 100, 200, 300 mmol.L^-1 NaCI respectively. 15 days later, the contents of inorganic ions （Na^＋, K^＋, Ca^2＋, Cl^-, NO3^-） in the roots, stalks, caudexes, petioles and leaves were determined. And the contents of soluble organic substances （Pro, FAA, SS, OA） in the leaves and roots were measured as well. At the same time, we calculated the effect of inorganic ions and organic substances on osmotic potential. The results indicated that K. virginica showed the ability of salt-exclusion. With the increase of salt concentration, Na^＋ and Cl^＋- were mainly accumulated in roots, stalks and petioles of the seedling; inorganic ions played a major role of osmotic adjustment of K. virginica.

关 键 词：海滨锦葵 盐胁迫 拒盐 渗透调节 盐生植物 

分 类 号：Q945.78[生物学—植物学]