欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2018, Vol. 34 ›› Issue (12): 7-12.doi: 10.11924/j.issn.1000-6850.casb17040068

所属专题： 生物技术； 小麦； 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

干旱胁迫对春小麦不同品种(系)苗期生理生化指标的影响

张永杰,徐文修,任毅,茹生古丽.牙生,耿洪伟   

  1. 新疆农业大学农学院,新疆农业大学农学院,新疆农业大学农学院,新疆巴州农业局,新疆农业大学农学院
  • 收稿日期:2017-04-11 修回日期:2018-04-09 接受日期:2017-06-23 出版日期:2018-05-03 发布日期:2018-05-03
  • 通讯作者: 耿洪伟
  • 基金资助:
    2016 年南京农业大学-新疆农业大学联合基金项目“丝绸之路经济带小麦抗旱、耐盐种质资源利用及相关基因定位与挖掘” (KYYJ201602)。

Drought Stress: Effects on Physiological and Biochemical Indexes of Different Spring Wheat Varieties (Lines)

  • Received:2017-04-11 Revised:2018-04-09 Accepted:2017-06-23 Online:2018-05-03 Published:2018-05-03

摘要： [目的]为了比较不同小麦品种（系）的抗旱性，[方法]采用不同浓度PEG-8000溶液对7个春小麦品种（系）材料进行不同程度的水分胁迫处理，研究不同胁迫浓度（0,10%，20%，30%）和时间（第一天，第三天，第五天）对春小麦材料生理生化指标的影响。[结果]结果表明：随着干旱胁迫程度的增加和时间的延长，‘新春6号’的过氧化物酶活性较高和丙二醛含量积累速度较慢；‘4701’的脯氨酸含量积累速度较快；‘4501’在第Ⅴ天的30%浓度PEG-8000处理条件下可溶性糖含量最高。[结论]通过不同品种（系）在不同胁迫条件下4项生理生化指标的变化情况，筛选出‘新春6号’、‘4701’和‘4501’更适应干旱胁迫环境，为新疆春小麦苗期抗旱品种（系）的筛选提供理论基础。

关键词: 风灾, 风灾, 灾度, 致灾因子, 承灾体, 危险度

Abstract: To compare drought resistance of different spring wheat varieties (lines), seven spring wheat varieties (lines) were treated with different-degree water stress, with different-concentration PEG-8000. The effects of different concentrations (0, 10%, 20% and 30%) and different time (the first day, the third day, and the fifth day) on the physiological and biochemical indexes of spring wheat were studied. The results showed that with the increasing extent and duration of drought stress,‘Xinchun No.6 had higher POD activity, and the accumulation rate of MDA content was slower. The accumulation rate of the proline content of‘4701’was faster.‘4501’had the highest content of soluble sugar under the treatment of 30% PEG-8000 on the fifth day. At last, we selected‘Xinchun No.6’,‘4701’and‘4501’which were more suitable for drought stress environment, and provided a theoretical basis for the screening of drought resistant varieties (lines) of spring wheat in Xinjiang.