Stomatal conductance and transpirational responses of field-grown cotton to ozone

Technical Report · Wed Jan 01 00:00:00 EST 1986

OSTI ID:7002138

Temple, P J

Stomatal conductance and transpiration were measured on normally-irrigated and water-stressed field-grown cotton (Grossypium hirsutum) exposed throughout the growing season to a gradient of ozone (O/sub 3/) concentrations. Environmental conditions during the growing season strongly affected stomatal responses and yield redutions due to O/sub 3/ exposure. Maximum stomatal conductance and transpiration decreased with increased O/sub 3/ concentration both in NI and WS treatments. Reductions in conductance and transpiration in O/sub 3/-stressed plants were attributed to inhibition of photosynthesis by O/sub 3/, leading to accumulation of CO/sub 2/ in intercellular spaces.

• Research Organization: California Univ., Riverside (USA). Statewide Air Pollution Research Center
• OSTI ID: 7002138
• Report Number(s): PB-87-100608/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
COTTON PLANTS
POLLUTION SOURCES
OZONE
AIR POLLUTION
CARBON DIOXIDE
INHIBITION
PHOTOSYNTHESIS
TRANSPIRATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PLANTS
POLLUTION
SYNTHESIS
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
560300 - Chemicals Metabolism & Toxicology