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

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (4): 879-882.

• 研究报告 • Previous Articles Next Articles

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

Li Hongwei^{1, 2};Zhang Jinzheng^1*;Sun Guofeng¹;Zhang Qixiang²

(¹Institute 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

Abstract

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 GA₃at 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

Li Hongwei;;Zhang Jinzheng;Sun Guofeng;Zhang Qixiang. Effects of GA₃ on the Survival Rate and the Net Photosynthetic Rates ofMicropropagation Plants of Phlox paniculata Transplanted during Winter in Beijing Area[J]. ACTA HORTICULTURAE SINICA, 2006, 33(4): 879-882.

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

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