剪枝处理对桔梗结实特性的影响  

Effects of top pruning on fruiting characters of Platycodon grandiflorum

作　　者：王志芬[1] 单成钢[1] 苏学合[1] 闫树林[1] 朱连先 隋春青 

机构地区：[1]山东省农业科学院中草药核技术与航天育种研究中心原子能农业应用研究所,山东济南250100 [2]山东蒙阴县农业科学研究所,山东蒙阴276200 [3]山东文登市农业局,山东文登264400

出　　处：《中国中药杂志》2008年第15期1807-1809,共3页China Journal of Chinese Materia Medica

基　　金：山东省良种产业化项目(2005L08-02)

摘　　要：目的:探讨不同时期剪枝处理对桔梗结实特性的影响,找出促进桔梗种子生长发育的适宜时期,为桔梗的繁种提供参考。方法:一年生种苗,大田栽植,现蕾后剪枝处理,田间观察记载剪枝后开花与果实成熟进程,测定株高、分枝数、坐果数、千粒重等。结果:剪枝处理的开花期依次后移,株高显著降低,分枝数增多,单株坐果数减少,对种子的千粒重有明显影响。结论:对二年生繁种桔梗,其适宜的剪枝时期在6月20日至7月5日之间。Objective： To investigate the effects of top pruning on fruiting characters of Platycodon grandiflorum, and find the suitable stage, in which seed growth and development furtherly. Method： One-year old seedlings were chosen and planted in field. Plant height, branching number, fruit number per plant, 1 000 grains weight were measured during growth and development period, respectively. Result. The treatment of top pruning postponed in turn the flowering date, lowered the plant heights and the fruit number per plant, increased the branching number and influenced significantly on 1 000 grains weights. Conclusion： The suitable stage of top pruning for producing seeds was from June 20th to July 5th.

关 键 词：桔梗 剪枝 种子 千粒重 

分 类 号：S567.239[农业科学—中草药栽培]