植物学报 ›› 1992, Vol. 9 ›› Issue (02): 44-46.

• 研究报告 • 上一篇    下一篇

黄腐酸增强小麦抗旱能力的生理生化机制初探

李绪行 殷蔚薏 邵莉楣 郑平 李淑捷   

  1. 1(中国科学院植物研究所, 北京 100044) 2(中国科学院化学研究所, 北京 100080)
  • 出版日期:1992-06-15 发布日期:1992-06-15

Preliminary Investigation of Physiological and Biochemical Mechanisms on Drought-Resistance of Wheat Enhanced by Leaf-Spraying Fulvic Acid

Li xu-hang, Yin Wei-yi and Shao Li-mei   

  1. 1(Institute of Botany, Academia Sinica, Beijing 100044) 2(Institute of Chemistry, Academia Sinica, Beijing 100080)
  • Online:1992-06-15 Published:1992-06-15

摘要: 叶面喷施黄腐酸可显著提高小麦幼苗的保水能力,表现为降低叶面蒸腾强度,增加气孔扩散阻力,提高幼苗的生物量,在干旱条件下尤为明显。喷施黄腐酸可使干旱条件下叶片内脯氨酸含量提高近一倍,并在水分充足时,也能使叶片脯氨酸含量增加78%。

Abstract: Leaf-spraying fulvic acid can obviously enhance the watermaintaining capacity of wheat seedlings, especially when under the condition of drought stress. The major physiological influences by fulvic acid are: decrease in leaf transpiration, increase in diffusion resistance of stoma and increasing in dry matters in the seedlings. Fulvic acid can also cause the proline content in the leaves to increase twice as much as that in the controls, and even in the condition of sufficent water supply,the poline content in the treated leaves increased by 78%.