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园艺学报 ›› 2002, Vol. 29 ›› Issue (6): 577-578.

• 研究报告 • 上一篇    下一篇

低温胁迫和喷施ABA对荔枝内源激素和成花的影响

周碧燕;李宇彬;陈杰忠;季作梁;胡志群
  

  1. (华南农业大学园艺学院, 广州510642)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-12-25 发布日期:2002-12-25

Effects of Low Temperature Stress and ABA on Flower Formation and Endogenous Hormone of Litchi

Zhou Biyan, Li Yubin, Chen Jiezhong, Ji Zuoliang, and Hu Zhiqun   

  1. (College of Horticulture , South China Agricultural University , Guangzhou 510642 , China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-12-25 Published:2002-12-25

摘要: 利用人工气候室模拟自然低温对荔枝进行低温胁迫和喷施ABA 处理, 以期为荔枝防寒护花技
术提供理论依据。结果表明, 低温下荔枝叶片内源脱落酸(ABA) 和吲哚乙酸( IAA) 含量增加, 蒸腾速率(Tr) 减少, 水势升高。ABA 处理明显提高了低温下叶片ABA 水平, 降低了IAA 水平, 使叶片Tr 减弱, 水势升高。经受-2 ℃低温后, ABA 处理的荔枝仍有较高的成花率。

关键词: 荔枝, 低温, ABA, 激素, 水分

Abstract: Litchi trees were treated at low temperature in controlled growing chamber for imitating cold wave. The results showed that abscisic acid (ABA) and indole-3-acetic acid ( IAA) contents of litchi leaves increased , transpiration rate (Tr) decreased and leaf water potential increased during the low temperature treatment . Exogenous ABA treatment raised ABA levels and reduced IAA levels of litchi leaves in the low temperature. Hence the value of
ABA/ IAA was higher than that of control . Also , Tr decreased and leaf water potential increased. Trees sprayed with ABA remained a relatively high flower formation rate after being treated at low temperature.

Key words: Litchi, Low temperature, ABA, Hormone, Water

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