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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (33): 60-64.

所属专题： 生物技术； 马铃薯

• 农学 农业基础科学 • 上一篇    下一篇

水分胁迫对不同木薯品种叶片生理生化的影响

于晓玲 王淦 阮孟斌 刘恩世 彭明   

  • 收稿日期:2012-07-27 修回日期:2012-10-08 出版日期:2012-11-25 发布日期:2012-11-25
  • 基金资助:

    国家重点基础研究发展计划

Physiological and Biochemical Changes of Leaves in Different Cassava Varieties Under Water Stress

  • Received:2012-07-27 Revised:2012-10-08 Online:2012-11-25 Published:2012-11-25

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摘要：

木薯作为一种重要的亚热带粮食/能源作物，备受重视。为了探索水分胁迫对不同木薯品种的影响，对3个木薯栽培品种进行了不同梯度的干旱处理，利用相关及判别分析方法研究其相关生理生化指标与木薯抗旱性的关系。结果表明，随着水分胁迫强度的增加，不同木薯品种Fv/Fm有不同程度的降低，测试品种中SC124降低幅度最大，SC5变化最小；ABA含量则有所增强，变化幅度因供试品种而异，SC124变化最为显著，SC5增强幅度最小。本次测试的木薯3个品种的抗旱能力显示，SC5相对较耐干旱，SC124相对不耐干旱。

关键词: 生长发育, 生长发育

Abstract:

Cassava is valued as an important subtropical food/energy crops. In order to select the best methods of cassava (Manihot esculenta Crantz) to evaluate drought system, we use analysis techniques of correlation and discrimination to study the relationship between physio-biochemical and drought resistance of the cassava leaves. Results showed that, PS Ⅱ photochemical efficiency (Fv/Fm) declined and the contents of abscisic acid (ABA) increased to different degree depending on the genotypes. Based on several physiological indexes, the drought tolerance of 3 tested cassava varieties was preliminarily evaluated that SC5 had the highest tolerant and SC124 had the most sensitive.