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Ecophysiological effects of CO2 enrichment on bottle gour in plastic house

, : Ecophysiological effects of CO2 enrichment on bottle gour in plastic house. Ying Yong Sheng Tai Xue Bao 13(4): 429-432

In vegetable growing under protection, lack of carbon dioxide is one of the most important factors limiting photosynthesis. The application of 600apprx1200 mumolcntdotmol-1 CO2 in the plastic house increased photosyntheitc rates and ratio of C/N, promoted both vegetative and reproductive growth of bottle gourd plants. Plant height, stem diameter, leaf thickness and leaf area increased by 3.90apprx19.48%, 11.58apprx27.37%, 38.46apprx69.23% and 26.09apprx49.38%, respectively. Average single fruit weight and yield were 4.05apprx19.62% and 8.65apprx19.47% higher than that in normal air. Primary female flower position was lowered by 2.6apprx4.0. Net photosyntheitc rate and the carboxylase activity of RuBP were greatest under CO2 1000mumolcntdotmol-1. The optimal concentration of CO2 applied to bottle gourd in spring was about 1000 mumolcntdotmol-1.


PMID: 12222047

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