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Effects of Carbon Dioxide Enrichment on Photosynthesis, Growth, and Flowering of Phalaenopsis
Fig. 2.　Schematic diagram of photosynthetic pathways in C<sub>3</sub>, C<sub>4</sub>, and crassulacean acid metabolism (CAM) plants (Adapted from Dehigaspitiya <i>et al</i>. 2019)
Fig. 2.　Schematic diagram of photosynthetic pathways in C3, C4, and crassulacean acid metabolism (CAM) plants (Adapted from Dehigaspitiya et al. 2019)

Author:Ming-Hsuan Tsai* and Wei-Ling Chen

Abstract:

The production of Phalaenopsis is equipment- and energy-intensive. To improve production and energy efficiency, carbon dioxide (CO2) enrichment is worthy of evaluation and investment. This article reviews relevant research on the application of CO2 enrichment in Phalaenopsis cultivation. The Phalaenopsis growth rates or biomass can be promoted during the vegetative stage by increasing CO2 concentrations to 700–800 μL L-1, while insufficient nitrogen fertilizer may limit the benefits. Enrich CO2 to 1,000 μL L-1 during the reproductive stage could shorten the days to spike emergence and enhance the numbers of flower spikes and buds, spike weight, and vase life. However, some studies reported that the concentration of CO2 went up to 1,600 μL L-1 may lead to decreases in shoot fresh and dry weights or flower bud drop.

Key words:Carbon dioxide enrichment, Crassulacean acid metabolism, Growth stage, Greenhouse

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Journal of
Taiwan Agricultural Research
Vol. 74, No.2 (2025) ISSN: 2790-086X Vol. 74, No.2 (2025)
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