Plant Physiol. Drug Metab Dispos
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Plant Physiology 80:59-62 (1986)
© 1986 American Society of Plant Biologists

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Articles

Acclimation to High CO2 in Monoecious Cucumbers 1

I. Vegetative and Reproductive Growth

Mary M. Peet

Department of Horticultural Science, Box 7609, North Carolina State University, Raleigh, North Carolina 27695-7609

CO2 concentrations of 1000 compared to 350 microliters per liter in controlled environment chambers did not increase total fruit weight or number in a monoecious cucumber (Cucumis sativus L. cv Chipper) nor did it increase biomass, leaf area, or relative growth rates beyond the first 16 days after seeding. Average fruit weight was slightly, but not significantly greater in the 1000 microliters per liter CO2 treatment because fruit numbers were changed more than total weight. Plants grown at 1000 and 350 microliters per liter CO2 were similar in distribution of dry matter and leaf area between mainstem, axillary, and subaxillary branches. Early flower production was greater in 1000 microliters per liter plants. Subsequent flower numbers were either lower in enriched plants or similar in the two treatments, except for the harvest at fruiting when enriched plants produced many more male flowers than the 350 microliters per liter treatments.

1 Paper No. 9929 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, NC 27695-7601. Supported in part by grant DEB 77-156845 to the Duke University Phytotron, DEB 78-23640 to B. Strain, and PCM 76-20595 to P. J. Kramer and M. M. Peet and PCM 77-11142 to P. J. Kramer.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1986 by the American Society of Plant Biologists