亚热带植物科学 ›› 2009, Vol. 38 ›› Issue (01): 15-18.

• 研究报告 • 上一篇    下一篇

6-BA、GA3调控春石斛花芽分化的效应

李振坚1,王雁1,彭镇华1,王彩云2,缪崑1,于耀3   

  1. 1. 中国林业科学研究院 林业研究所, 国家林业局林木培育重点实验室, 北京 100091;
    2. 华中农业大学 园艺林学学院, 湖北 武汉 430070;
    3. 山西农业大学 园艺学院, 山西 太谷 030801
  • 收稿日期:2008-09-01 出版日期:2009-03-10 发布日期:2009-03-10
  • 作者简介:李振坚(1974-),男,山西祁县人,助理研究员,博士,从事兰花种质创新与遗传改良研究。
  • 基金资助:

    中央级公益性科研院所专项基金(2060302);"948"国家林业局引进项目(2006-4-C07);科技部"十一五"科技支撑计划项目(No.2006BAD07B05)资助

Physiological Effects of 6-BA and GA3 on Flower Bud Differentiation of Nobile Type Dendrobium

LI Zhen-jian1, WANG Yan1, PENG Zhen-hua1, WANG Cai-yun2, MIAO Kun1, YU Yao3   

  1. 1. Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forest, Chinese Academy of Forestry, Beijing 100091, China;
    2. College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan 430070, Hubei China;
    3. Horticulture College, Shanxi Agricultural University, Taigu 030801, Shanxi China
  • Received:2008-09-01 Online:2009-03-10 Published:2009-03-10

摘要: 调查了春石斛假鳞茎封顶和增粗的生长情况,并以不同浓度6-BA、GA3溶液进行灌根处理,观测其对花芽分化的效应。结果表明,假鳞茎的增粗阶段在9月15日至10月10日,经过约50 d增粗生长,假鳞茎粗度迅速增加。其间,6-BA、6-BA+GA3处理对春石斛花芽分化有促进作用。3种6-BA浓度作用效果明显,最佳为400 mg/L;6-BA添加低浓度GA3,对花芽分化有增效作用,其中以6-BA 200 mg/L添加GA3 50 mg/L效果最佳。GA3作用效果不稳定,浓度为25 mg/L时叶片脱落不明显,高于50 mg/L则叶片大量脱落。

关键词: 春石斛, 生长调节剂调控, 6-BA, GA3, 花芽分化

Abstract: Based on the investigation of pseudobulbs horizontal elongation and growth of nobile type dendrobium,the effects of growth regulators such as GA3,6-BA on the floral bud differentiation were studied.The results showed that the rapidly thickening stage of the pseudobulbs were from September 15th to October 10th,about 50 d.The growth regulators of 6-BA,6-BA+GA3 improved the floral bud differentiation of nobile type dendrobium during this period.Three different concentration treatments of 6-BA promoted floral bud differentiation significantly,and the concentration of 400 mg/L was the best.Proper concentration of 6-BA plus GA3 also promoted flower bud initiation.The optimum concentration of the three treatments was 6-BA 200 mg/L+GA3 50 mg/L.The effects of GA3 on the flower bud initiation were not steady.The defoliation phenomena was not obvious under GA3 concentration below 25 mg/L while large numbers of leaves fallen off with GA3 concentration above 50 mg/L.

Key words: nobile type dendrobium, hormonal regulation, 6-benzylaminopurine(6-BA), gibberellin(GA3), floral bud differentiation

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