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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (9): 160-165.

所属专题： 生物技术； 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

PEG模拟干旱胁迫对高粱幼苗生理特性的影响

崔江慧 李霄 常金华   

  • 收稿日期:2011-01-24 修回日期:2011-02-21 出版日期:2011-04-25 发布日期:2011-04-25
  • 基金资助:

    河北省自然科学基金资助项目

Biochemical Characteristics in Sorghum Seedlings under PEG Simulated Drought Stress

  • Received:2011-01-24 Revised:2011-02-21 Online:2011-04-25 Published:2011-04-25

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摘要：

选用两个甜高粱和一个粒用高粱品种：‘高粱蔗’、‘四丽美’和‘河农16’，利用PEG6000对供试品种进行干旱胁迫处理，测定这3个品种不同处理时间和浓度的保护酶系活力和渗透调节物质（超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）酶活力、可溶性糖含量）的变化，并进行抗旱性分析，结果表明：胁迫处理下这3个品种的SOD、CAT、POD酶活力和可溶性糖含量均表现为‘高粱蔗’最高，‘四丽美’次之，‘河农16’最低，即‘高粱蔗’抗旱性最强，‘河农16’最差；不同品种类型之间保护酶系活力和渗透调节物质变化不同，抗旱能力存在差异，即甜高粱品种的抗旱能力强于普通粒用高粱品种。

关键词: 肝糖原, 肝糖原

Abstract:

The experiment used two sweet sorghum and a grain sorghum varieties: ‘Sorghum cane’, ‘Four Li-mei’ and ‘Henong 16’. These varieties were for drought treatment using PEG stress. Changes of protective enzymes activities and osmotic adjustment substances (sugar content and the SOD, CAT, POD enzyme) were tested with different treatment time and concentration in three varieties and drought resistance were analyzed. The results showed that the SOD, CAT, POD enzyme activity of these three species and soluble sugar content were ‘Sorghum cane’ >’Four Li-mei’> ‘Henong 16’. The drought resistance of sorghum cane is the strongest and ‘Henong 16’ was the worst in the selected varieties; changes of protective enzymes activities and osmotic adjustment substances between varieties which drought tolerance were different. The drought-resistant of sweet sorghum is stronger than the ordinary grain sorghum varieties.

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