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当前位置: 首页 > 文章 > 旱盐互作对冬小麦幼苗生长及其抗逆生理特性的影响 应用生态学报 2009,20 (4) 811-816
Position: Home > Articles > Interactive effects of drought and salt stresses on winter wheat seedlings growth and physiological characteristics of stress-resistance Chinese Journal of Applied Ecology 2009,20 (4) 811-816

旱盐互作对冬小麦幼苗生长及其抗逆生理特性的影响

作  者：
陈成升;谢志霞;刘小京
单  位：
中国科学院遗传与发育生物学研究所农业资源研究中心
关键词：
冬小麦;旱盐胁迫;可溶性糖;脯氨酸;钠离子;钾离子
摘  要：
采用水培方法,以不同浓度的PEG-6000(0、8.3%、12.6%(W/V))和NaCl(0、25、50mmol·L-1)溶液模拟不同程度的干旱胁迫及盐胁迫,研究了盐分对干旱胁迫条件下冬小麦沧-6001幼苗生长及其抗逆生理特性的影响.结果表明:在8.3%或12.6%PEG-6000处理条件下,添加25mmol·L-1NaCl均使植株干物质积累和植株含水量比单一PEG处理增加,同时叶片可溶性糖和可溶性蛋白质含量增加,丙二醛和脯氨酸含量下降,植株各部位Na+含量升高、K+含量下降;在12.6%PEG-6000处理条件下,添加50mmol·L-1NaCl对植株的胁迫效应高于单一PEG处理.表明在干旱胁迫条件下,加入适量盐分可缓解干旱胁迫对冬小麦幼苗生长的抑制.
译  名：
Interactive effects of drought and salt stresses on winter wheat seedlings growth and physiological characteristics of stress-resistance
作  者：
CHEN Cheng-sheng,XIE Zhi-xia,LIU Xiao-jing (Center for Agricultural Resources Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Shijiazhuang 050021,China)
关键词：
winter wheat; drought-salt stress; soluble sugar; proline; Na+; K+.
摘  要：
In a hydroponic culture,different concentrations of PEG-6000 (0,8.3%,and 12.6%,W/V) and NaCl (0,25,and 50 mmol·L-1) were added to simulate different degrees of drought and salt stresses,aimed to study their interactive effects on the winter wheat (cv. Cang-6001) seedlings growth and physiological characteristics of stress-resistance. The results showed that under the conditions of adding 8.3% and 12.6% of PEG-6000,the addition of 25 mmol NaCl ·L-1 increased the dry matter accumulation and water content in plant,the contents of soluble sugar and soluble protein in leaf and the Na+ content in shoot and root,while decreased the MDA and proline contents in leaf and the K+ content in shoot and root,compared with no NaCl addition. Adding 12.6% of PEG-6000 and 50 mmol ·L-1 of NaCl more inhibited plant growth,compared with no NaCl added. It was suggested that under drought stress,applying definite amount of salt could alleviate the deleterious effects of drought stress on winter wheat seedlings growth.

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