Effect of Elevated CO2 Concentration on Photosynthesis, Gowth and Development of Guzmania ‘Luna’

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (5): 1027-1032.

• 研究论文 • Previous Articles Next Articles

Effect of Elevated CO₂ Concentration on Photosynthesis, Gowth and Development of Guzmania ‘Luna’

Hui Junai¹;Li Yonghua^{1, 2};Li Zhuo²;Ye Qingsheng^1*

(¹College of L ife Sciences, Guangdong Key Laboratory of Biotechnology for Plant Development, South China N ormal University,Guangzhou, Guangdong 510631, China; ²College of Forestry and Horticulture, Henan Agricultural University, Zhengzhou,Henan 450002, China)

Received:2006-01-16 Revised:2006-03-21 Online:2006-10-25 Published:2006-10-25

Abstract

Abstract: The effects of CO₂ enrichment on net photosynthetic rate ( Pn) , growth, photosynthetic enzyme activity and flowering of Guzmania ‘Luna’were studied in plastic greenhouse. The results showed that CO₂ enrichment caused obviously increase in Pn. Pn was increased by 26.18% , 43.49% in treatment of CO₂(600 ±40) μmol·mol^{- 1} , (900 ±40) μmol·mol^{- 1} as compared with control [CO₂ concentration was (360±30) μmol·mol^{- 1} ] , respectively, when treated 90 d. Stomata conductance and transp iratory rate of Guzmania ‘Luna’were reduced by CO₂ enrichment. But the leaf area and plant height were increased by 15.01% , 11.12% in treatment of CO₂ (600 ±40) μmol·mol^{- 1} , and 18.99% , 16.98% in CO₂ (900 ±40) μmol·mol^-1 when treated for 90 d. In addition, the accumulation of soluble sugar and starch were promoted, but the activity of glycolate oxidase was apparently decreased by CO₂ enrichment, respectively, flowering of Guzmania ‘Luna’was also promoted.

Key words: Bromeliaceae, Guzmania ‘Luna’, Photosynthetic characteristic, CO₂, Growth

CLC Number:

S 68

Hui Junai;Li Yonghua;;Li Zhuo;Ye Qingsheng. Effect of Elevated CO₂ Concentration on Photosynthesis, Gowth and Development of Guzmania ‘Luna’[J]. ACTA HORTICULTURAE SINICA, 2006, 33(5): 1027-1032.

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Effect of Elevated CO₂ Concentration on Photosynthesis, Gowth and Development of Guzmania ‘Luna’

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