[1]杨淑慎,翁明阳,戴明,等.甜菜碱不同预处理时间下小麦幼苗对PEG-6000模拟干旱的响应[J].水土保持研究,2008,15(06):241-244.
　YANG Shu-shen,WENG Ming-yang,DAI Ming,et al.Response of the Osmotic Stress on the Wheat Seedlings Drought Resistance Under the Different time Betaine Pretreatment[J].Research of Soil and Water Conservation,2008,15(06):241-244.
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甜菜碱不同预处理时间下小麦幼苗对PEG-6000模拟干旱的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 15 期数: 2008年06期 页码: 241-244 栏目: 出版日期: 2008-12-20
Title:
Response of the Osmotic Stress on the Wheat Seedlings Drought Resistance Under the Different time Betaine Pretreatment
作者:
杨淑慎1, 翁明阳1, 戴明1, 孙宾芳1, 山仑2
1. 西北农林科技大学, 生命科学学院, 陕西 杨凌 712100;
2. 中国科学院, 水土保持研究所黄土高原与旱地农业国家重点实验室, 陕西 杨凌 712100
Author(s):
YANG Shu-shen1, WENG Ming-yang1, DAI Ming1, SUN Bin-fang1, SHAN Lun2
1. College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, the Chinese Academy of Sciences, Yangling, Shaanxi 712100 China
关键词:
甜菜碱; 小麦; PEG渗透胁迫
Keywords:
betaine; wheat; PEG osmotic stress
分类号:
Q945.18
摘要:
以小麦长武134为实验材料，于小麦长至两叶一心期时根施2.0g/L甜菜碱，研究外源甜菜碱预处理不同时间(48h，72h，96h)后对PEG-6000(-1.0MPa)胁迫下小麦幼苗水分状况、游离脯氨酸含量、可溶性糖含量、可溶性蛋白含量、叶绿素含量、抗氧化酶活性、膜伤害程度的影响。结果表明外施甜菜碱可增强干旱条件下细胞的渗透调节能力，提高抗氧化酶的活性，减缓干旱胁迫诱导的细胞伤害，其中用2.0g/L的甜菜碱预处理72h效果相对较好。
Abstract:
Effects of root-applied exogenous betaine (2.0g/L) at different time(48h,72h,96h) on the drought-tolerance of wheat (Changwu 134) seedlings under PEG-6000(-0.1MPa) osmotic stress was examined,including the water status,Proline content,soluble sugars content,soluble protein content,chlorophyll content and the activities of antioxidant enzymes.The results showed that the exogenous betaine could promote the activities of membrane protecive enzymes,increase the content of the osmotically adjustive things,decrease the drought-stress-induced injuries of wheat seedlings and protect the cell structure,and pretreating 72 h provided the better effect.

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备注/Memo

收稿日期:2008-11-11;
基金项目:陕西省自然科学基金项目(2007C117)
作者简介:杨淑慎（1956- ），女，陕西黄陵人，教授，博士，主要从事植物抗逆生理教学与研究工作。E-mail:yangshushen2002@163.com
通讯作者:山仑（1933- ），男，山东龙口人，工程院院士，主要从事旱地农业生理生态研究。

更新日期/Last Update: 1900-01-01