Effect of ozone on the phytotoxicity of sulfur dioxide for alfalfa

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Plant Physiol.; (United States)

OSTI ID:6253410

Mandl, R H; O'Neill, M C; Weinstein, L H

Three cultivars of alfalfa (Mesa-Sirsa, Kansa, and 212-H) were propagated vegetatively and exposed to SO2 at 0, 0.2, 0.4, 0.8, and 1.6 ppm with or without 0.07 ppm of ozone for four hours in controlled environment chambers. In the presence of ozone, a higher concentration of SO2 was required to produce an ED50 for foliar injury, indicating an antagonistic effect. In addition, the toxicity curves for SO2 alone or in combination with ozone showed that the response threshold to SO2 was increased by the presence of ozone.

• Research Organization: Boyce Thompson Institute for Plant Research, Yonkers, NY
• OSTI ID: 6253410
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 53:168; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALFALFA
BACTERIA
BIOLOGICAL EFFECTS
CHALCOGENIDES
DOSE-RESPONSE RELATIONSHIPS
INHIBITION
INJURIES
LEAVES
LEGUMINOSAE
MICROORGANISMS
OXIDES
OXYGEN COMPOUNDS
OZONE
PLANTS
RESPONSE MODIFYING FACTORS
RHIZOBIUM
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES