Leaf diffusion resistance responses of three petunia cultivars to ozone and/or sulfur dioxide

Journal Article · Fri Jun 01 00:00:00 EDT 1979 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1979.10470833· OSTI ID:5407193

Elkiey, T; Ormrod, D P

To determine the response of leaf stomata to ozone and/or sulfur dioxide under two humidity regimes, leaf diffusion resistance of plants from three cultivars of petunia (Petunia hybrida) of differing ozone sensitivity was measured. At about 50% relative humidity, exposure to ozone and/or SO2 resulted in rapid increases in leaf diffusion resistance. At about 90% humidity, only slight increases in the leaf diffusion resistance were noted. The maximum leaf diffusion resistance reached with continued exposure to the pollutants was similar for all cultivars. (6 graphs, 26 references, 1 table)

• Research Organization: Univ of Guelph, Canada
• OSTI ID: 5407193
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Vol. 29:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
LEAVES
DIFFUSION
OZONE
BIOLOGICAL EFFECTS
SULFUR DIOXIDE
DOSE-RESPONSE RELATIONSHIPS
STOMATA
CHALCOGENIDES
OPENINGS
OXIDES
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
SULFUR OXIDES
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)