Effect of high CO{sub 2} on cold acclimation and deacclimation of three conifers
- Forest Service, Flagstaff, AZ (United States). Rocky Mountain Forest and Range Experiment Station
- Hort + Research Inst., Palmerston North (New Zealand)
Atmospheric CO{sub 2} levels are rising, and whether or not this leads to a climate change, high CO{sub 2} is known to have some direct effects of plants. One aspect that has only begun to be explored is possible effects on cold hardiness. Well adapted woody plants can tolerate the lowest temperatures to which they may be exposed at all times of the year. Every year temperate and boral woody plants must cold harden in a timely manner in autumn, become hardy enough to withstand the coldest winter temperatures, and not lose their hardiness prematurely in the spring. The authors objective was to determine the effect of elevated CO{sub 2} on cold acclimation and deacclimation of three commercially important conifers. Seedlings of three conifers were cold hardened and dehardened in growth rooms under 350 or 700 ppm CO{sub 2}. High CO{sub 2} had little effect on cold hardiness of radiata pine, but increased autumn and spring hardiness of Douglas-fir. High CO{sub 2} increased hardiness of ponderosa pine in autumn and decreased it in the spring.
- OSTI ID:
- 248074
- Report Number(s):
- CONF-9504248-; TRN: IM9628%%174
- Resource Relation:
- Conference: Interior west global change workshop, Ft. Collins, CO (United States), 25-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Interior West global change workshop; Tinus, R.W. [ed.] [Forest Service, Flagstaff, AZ (United States). Rocky Mountain Forest and Range Experiment Station]; PB: 138 p.
- Country of Publication:
- United States
- Language:
- English
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