Influence of relative humidity on direct sulfur dioxide damage to plant sexual reproduction

Journal Article · Tue Jul 01 00:00:00 EDT 1980 · J. Environ. Qual.; (United States)

DOI:https://doi.org/10.2134/jeq1980.00472425000900030034x· OSTI ID:5162190

Murdy, W H; Ragsdale, H L

Results of in vivo experiments with Geranium carolinianum L. showed that sulfur dioxide (SO/sub 2/) damaged sexual reproduction (in terms of decreased seed set) when relative humdity (RH) was 80% or above but not when RH was 70% or below. Relative humidity alone, if 80% or higher, damaged sexual reproduction; the addition of SO/sub 2/ increased the damage. A high SO/sub 2/ dosage of 1.5 ppM/7 hours at 50% RH caused leaf injury, but decreased percent seed set <5%, whereas a low SO/sub 2/ dosage of 0.2 ppM/7 hours at 90% RH decreased percent seed set by 32% without visible leaf injury. At an SO/sub 2/ dosage of 0.4 ppM/7 hours administered during anthesis, percent seed set was virtually identical with the control at 70% RH, 35% below the control at 80% RH, and 68% below the control at 90% RH.

• Research Organization: Emory Univ., Atlanta, Ga
• OSTI ID: 5162190
• Journal Information: J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 9:3; ISSN JEVQA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism &amp; Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CHALCOGENIDES
HUMIDITY
OXIDES
OXYGEN COMPOUNDS
PLANTS
REPRODUCTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOXICITY
TRACE AMOUNTS