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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (9): 195-197.

所属专题： 园艺

• 农学 农业基础科学 • 上一篇    下一篇

硅提高黄瓜幼苗抗旱性的研究

周秀杰1,赵红波2,马成仓3   

  • 收稿日期:2009-12-07 修回日期:2009-12-17 出版日期:2010-05-05 发布日期:2010-05-05
  • 基金资助:

    重要物种的综合生态适应对策;硅增强作物抗逆性机制;采煤塌陷区林草复合生态系统构建与高生产力研究

Studies on Silicon Increased Drought Resistance of Cucumber Seedlings

Zhou Xiujie 1, Zhao Hongbo 2, MA Chengcang3   

  • Received:2009-12-07 Revised:2009-12-17 Online:2010-05-05 Published:2010-05-05

PDF (PC)

963

摘要：

本文研究了硅对不同水分处理条件下黄瓜幼苗的叶片含水量、过氧化物酶（POD）活性、超氧化物歧化酶（SOD）活性、过氧化氢酶（CAT）活性、可溶性蛋白含量及可溶性糖含量的影响。研究结果表明：在充分供水条件下，供硅提高了黄瓜幼苗的叶片含水量、POD活性、SOD活性和CAT活性；在水分胁迫条件下，供硅提高了可溶性蛋白含量、POD活性、SOD活性和CAT活性，降低了含水量。说明硅可能是通过参与植物体内的生理代谢活动提高了黄瓜幼苗的抗旱性。

关键词: DCAD, DCAD, 崂山奶山羊, 瘤胃pH, NH3-N, 酶活

Abstract:

Studies on the effects of silicon on leaf water content, peroxidase (POD) activity, superoxide dismutase (SOD) activity, catalase (CAT) activity, soluble protein content and soluble sugar content in cucumber plants were conducted in pot experiments. The results showed that silicon increased leaf water content, POD, SOD and CAT activity under adequate water supply, silicon increased content of soluble proteins, POD, SOD and CAT activities, decreased leaf water content under water stress. It indicated that silicon might be involved in physiological metabolism on enhancing drought resistance of cucumber plants.