Variability of cultivar responses to ozone. Final report, 25 June 1987-31 December 1988
Technical Report
·
OSTI ID:5223055
This study was conducted in open-top field chambers at the University of California, Riverside, CA. The investigator exposed four cultivars each of dry beans, processing tomatoes, cotton, lettuce, broccoli, and onions to oxidant air pollutants at three levels: charcoal filtered air, ambient air, and ambient air with ozone added to equal 1.5 times ambient concentrations. The investigator measured stomatal conductance, visible injury, yield, and vegetative biomass. In beans, varieties with higher rates of stomatal conductance exhibited greater amounts of visible injury and greater yield losses. For processing tomatoes, cultivars with potentially greater yields seemed more susceptible to oxidant induced yield losses. There was no relationship between visible injury or rates of stomatal conductance and yield reductions. For cotton, short-season cultivars suffered greater yield losses than late-maturing cultivars. All lettuce cultivars showed visible injury symptoms on their outer leaves, but no consistent effects on yield due to oxidant exposure. None of the broccoli cultivars showed a significant yield reduction in response to oxidant exposure. Exposure to elevated oxidant levels resulted in visible injury and accelerated senescence of onion plants.
- Research Organization:
- California Univ., Riverside, CA (USA). Statewide Air Pollution Research Center
- OSTI ID:
- 5223055
- Report Number(s):
- PB-89-225460/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
BIOMASS
CROPS
DOCUMENT TYPES
ENERGY SOURCES
ENVIRONMENTAL EXPOSURE
ENVIRONMENTAL IMPACTS
OXIDIZERS
OZONE
PLANTS
POLLUTION
PROGRESS REPORT
RENEWABLE ENERGY SOURCES
YIELDS
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
BIOMASS
CROPS
DOCUMENT TYPES
ENERGY SOURCES
ENVIRONMENTAL EXPOSURE
ENVIRONMENTAL IMPACTS
OXIDIZERS
OZONE
PLANTS
POLLUTION
PROGRESS REPORT
RENEWABLE ENERGY SOURCES
YIELDS