Chinese Bulletin of Botany ›› 2001, Vol. 18 ›› Issue (06): 678-683.

• 综述与专论 • Previous Articles     Next Articles

On Hypotheses of Controlling Flower_bud Initiation in Fruit Trees by Phytohormone Signals

LI Xing-Jun LI San-Yu LIN Jin-Xing   

  1. 1(Institute of Botany, The Chinese Academy of Sciences, Beijing 100093)2(College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029)
  • Received:2001-03-25 Revised:2001-07-15 Online:2001-11-20 Published:2001-11-20
  • Contact: LI Xing-Jun

Abstract: Two hypotheses of controlling flower_bud initiation by hormonal signal in fruit trees are briefly reviewed in this paper. From the comparisons, it seemed appropriate to deduce that auxins from seeded fruits or shoot tips could be an inhibiting signal for flower_bud initiation, and high concentration of cytokinins in vegetative buds could stimulate flower_bud initiation via the weak auxin_signal. However, it remains controversial whether gibberellins themselves represent the signal or they are only involved in generating the other signal. Thus, further investigation is needed to elucidate the mechanism of controlling flower-bud initiation by hormonal signals.