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Environmental influences on foliar sensitivity of legumes to ozone

Journal Article · · Agron. Abstr.; (United States)
OSTI ID:6373556
;
An experiment was designed to determine the effect of two growth and two exposure temperatures on foliar sensitivity of bean (Phaseolus vulgaris, L.) cv. Pinto and soybean (Glycine max. (L) Merr.) cv. Dare to ozone. The influence of a normal and a deficiency level of potassium (without visible deficiency symptoms) on foliar sensitivity was also investigated. Pinto bean and soybean were grown in carefully controlled environmental growth chambers to minimize variations in the micro-environment. Fourteen day old plants were exposed in specially designed exposure chambers to eight doses of ozone. Foliar injury was determined as the average percent injury on the two primary leaves of each plant. Pinto bean developed more foliar injury than soybean under all conditions. Both species were more sensitive to low doses of ozone when grown and exposed at 28/sup 0/C than exposed at 20/sup 0/C. They were more sensitive to high doses of ozone when grown at 28/sup 0/C and exposed at 20/sup 0/C. Growth and exposure temperature interacted in the development of foliar injury on pinto bean, but only growth temperature influenced the amount of foliar injury on soybean. Both legumes developed more foliar injury when growth with low potassium nutrition. There was no relationship between foliar injury and reducing sugars or sucrose content of the leaves.
Research Organization:
Air Pollution Control Office, Raleigh, NC
OSTI ID:
6373556
Journal Information:
Agron. Abstr.; (United States), Journal Name: Agron. Abstr.; (United States) Vol. 63; ISSN AGABB
Country of Publication:
United States
Language:
English

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Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
BACTERIA
BIOLOGICAL EFFECTS
COMPARATIVE EVALUATIONS
DOSE-RESPONSE RELATIONSHIPS
ELEMENTS
GLYCINE HISPIDA
INJURIES
LEAVES
LEGUMINOSAE
METALS
MICROORGANISMS
NUTRITIONAL DEFICIENCY
OZONE
PHASEOLUS
PLANTS
POTASSIUM
RESPONSE MODIFYING FACTORS
RHIZOBIUM
SENSITIVITY
TEMPERATURE EFFECTS