Potential effects of elevated carbon dioxide levels on seed germination of three native plant species. [Nemophila menziesii; Layia platyglossa; Clarkia rubicunda]
Germination responses of seeds of three native plant species - Nemophila menziesii H. and a. ssp. menziesii, Layia platyglossa (F. and M.) Gray ssp. platyglossa, and Clarkia rubicunda (Lindl.) Lewis and Lewis ssp. rubicunda - were investigated at atmospheric CO/sub 2/ levels of 0.03%, 0.07%, 0.14%, and 0.21% in controlled greenhouse experiments. Seeds were germinated in a 1:1 (vol/vol) mixture of vermiculite and sponge rock under natural conditions of daylengths and temperatures. Elevations in CO/sub 2/ concentrations did not significantly affect the germination responses of any of the three species, but their patterns of germination differed. The data suggest that increasing CO/sub 2/ concentrations such as those anticipated in the next century may not significantly affect germination of native plant species.
- Research Organization:
- Univ. of California, Santa Barbara
- OSTI ID:
- 6781825
- Journal Information:
- Bot. Gaz. (Chicago); (United States), Vol. 144:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
BIOLOGICAL EFFECTS
ECOLOGICAL CONCENTRATION
PLANTS
SEEDS
GERMINATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
OXIDES
OXYGEN COMPOUNDS
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)