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园艺学报 ›› 2006, Vol. 33 ›› Issue (4): 879-882.

• 研究报告 • 上一篇    下一篇

GA3 对宿根福禄考组培苗在北京冬季移栽成活率以及光合速率的影响

李红伟1, 2;张金政1*;孙国峰1;张启翔2   

  1. (1 中国科学院植物研究所, 北京100093; 2 北京林业大学园林学院, 北京100083)
  • 收稿日期:2005-09-22 修回日期:2006-02-23 出版日期:2006-08-25 发布日期:2006-08-25

Effects of GA3 on the Survival Rate and the Net Photosynthetic Rates ofMicropropagation Plants of Phlox paniculata Transplanted during Winter in Beijing Area

Li Hongwei1, 2;Zhang Jinzheng1*;Sun Guofeng1;Zhang Qixiang2   

  1. (1 Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China; 2College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China)
  • Received:2005-09-22 Revised:2006-02-23 Online:2006-08-25 Published:2006-08-25

摘要: 本文对北京地区宿根福禄考组培苗冬季移栽成活率低的问题进行了研究。不同浓度的GA3 处理可显著提高组培苗移栽成活率并促进生长。20μmol·mol- 1的GA3 处理后组培苗移栽成活率由68.18%提高到100%; 与对照相比较, 喷施GA3 的小苗在冬季两个月内株高增至约300% , 功能叶单叶面积增至约200%。各梯度GA3 对宿根福禄考功能叶片光合色素含量以及单位面积的叶片净光合速率影响不显著, 但显著提高了株高和冠幅, 因此移栽苗总的同化产物增加。

关键词: 宿根福禄考, 组培苗, 移栽成活率, GA3 , 净光合速率

Abstract: Surviving rate of transplanting of micropropagation plants of Phlox paniculata is improved from the initiae 68.18% to 100% by spraying 20 μmol·mol- 1 exogenetic GA3 during winter time, while the net photosynthetic rates and chloroplast pigments contents are not influenced by exogenetic GA3 at different concentiation gradients. The height of plants and length of functional leaves are increased significantly by spraying different concentiation exogenetic GA3, and it results in total biomass increment.

Key words: Phlox paniculata, Micropropagation plant, Survival rate of transplanting, GA3 , Net photosynthetic rate