Effect of air-borne oxidants on leaves of pinto bean and petunia

Journal Article · Fri Jan 01 00:00:00 EST 1960 · Proc. Am. Soc. Hortic. Sci.; (United States)

OSTI ID:5262097

Taylor, O C; Stephens, E R; Darley, E F; Cardiff, E A

Experiments were conducted for the purpose of comparing the characteristics of leaf injury on petunia and pinto bean plants in the presence of: ozone, the reaction products of ozone and l-hexene, irradiated nitrogen dioxide and l-hexene, and oxidants in polluted ambient air. Ozone caused: chlorosis at dosages less than 0.2 ppm and long exposure and mesophyll collapse at dosages more than 0.25 ppm on the oldest petunia leaves, and mesophyll collapse on 14-day-old pinto bean leaves and to less extent on 7-day-old bean leaves. Reaction products of ozone and l-hexene caused no visible injury on petunia leaves but caused glazing of the under surface and mesophyll collapse on 14-day-old pinto bean leaves. Photochemical reaction products of nitrogen dioxide and l-hexene caused: banding and lower surface glazing of young, expanding petunia leaves; bronzing and glazing of lower surface of 7-day-old primary and trifoliate pinto bean leaves; and no injury of 14-day-old pinto bean leaves. Oxidants in polluted ambient air caused ozone and ozone-hexene types of injury on pinto bean plants, but the injury most prevalent on the bean and petunia plants appeared to be identical with that caused by the irradiated mixtures. 10 references, 5 figures, 1 table.

• Research Organization: Univ. of California Citrus Experiment Station, Riverside
• OSTI ID: 5262097
• Journal Information: Proc. Am. Soc. Hortic. Sci.; (United States), Vol. 75
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
HEXENES
BIOLOGICAL EFFECTS
NITROGEN DIOXIDE
OZONE
PHOTOCHEMICAL OXIDANTS
AIR POLLUTION
COMPARATIVE EVALUATIONS
DAMAGE
INJURIES
LEAVES
ORNAMENTAL PLANTS
PHASEOLUS
SYMPTOMS
ALKENES
CHALCOGENIDES
HYDROCARBONS
LEGUMINOSAE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLANTS
POLLUTION
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)