Effects of carbon dioxide enrichment on the expansion and size of kudzu (pueraria lobata) leaves

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Weed Sci.; (United States)

OSTI ID:6227171

Sasek, T W; Strain, B R

Seedlings of kudzu were grown at 350, 675, or 1000 ..mu..l/L CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ in controlled-environment chambers. At elevated CO/sub 2/ concentrations, maximum leaf expansion rates were approximately 40% greater, leaves were fully expanded several days sooner, fully expanded leaves were larger at each leaf position, and leaf production rates were increased 12%. Peak starch accumulation was much greater in plants grown at elevated CO/sub 2/ concentrations. Total xylem water potentials were higher (less negative) at full hydration, and osmotic potentials were decreased (more negative) by CO/sub 2/ enrichment. At 1000 ..mu..l/L CO/sub 2/, leaf trigger pressure was twice that at 350 ..mu..l/L CO/sub 2/. Results suggest that leaf expansion rates and leaf expansivity may have been increased due to higher trigger pressure at the higher CO/sub 2/ concentrations. The potential for successful seedling establishment may be enhanced as the atmospheric CO/sub 2/ concentration continues to rise, increasing kudzu invasiveness.

• Research Organization: Duke Univ., Durham, NC 27706
• OSTI ID: 6227171
• Journal Information: Weed Sci.; (United States), Journal Name: Weed Sci.; (United States) Vol. 37; ISSN WEESA
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
553000* -- Agriculture & Food Technology
60 APPLIED LIFE SCIENCES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
GROWTH
LEAVES
OPTIMIZATION
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANT GROWTH
PRODUCTION
QUANTITY RATIO
SYNTHESIS
WEEDS