Plant water balance and susceptibility to damage by air pollution in sweet corn

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Plant Physiol.; (United States)

OSTI ID:5320594

Harris, M J; Heath, R L

Two commercial sweet corn hybrids, Zea mays L. (var. Bonanza, from the Ferry Morse Seed Co., and Monarch Advance, from the Northrup, King, and Co.) which differ in their response to air pollution (Cameron, 1975), were observed also to differ in leaf water potential and response to water stress. Leaf water potential for the resistant hybrid, Bonanza, was lower under conditions tested. Controlled exposures to ozone under partial water stress, which was induced with osmotic solutions of PEG-6000, indicate the stomata of the resistant hybrid is likewise more susceptible to closure. It is hypothesized that, in this case, stomatal closure due to the leaf water potential poise affords protection from damage by air pollution.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 5320594
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 63:5; 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.
AIR POLLUTION
BIOLOGICAL EFFECTS
BIOLOGICAL FUNCTIONS
CEREALS
COMPARATIVE EVALUATIONS
CORRELATIONS
DEHYDRATION
FUNCTIONS
GRASS
MAIZE
OPENINGS
OZONE
PHYSIOLOGY
PLANTS
POLLUTION
SENSITIVITY
STOMATA