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Title: Sensitivity and symptomology of marigold cultivars exposed to acute sulfur dioxide

Abstract

Thirty-nine cultivars of marigold (Tagetes spp.) were exposed to sulfur dioxide to determine their relative sensitivity. Flowering plants were fumigated at 1 ppM SO/sub 2/ for 4 hours or at 2 ppM SO/sub 2/ for 2 hours. The average foliar injury for all leaves on individual plants ranged from 42.3% for 'Crackerjack Mix' at 2 ppM SO/sub 2/ to 0.0% for 'Cupid Yellow' at 1 ppM SO/sub 2/. Foliar necrosis appeared as a gray to white marginal and/or interveinal scorch 1 day after exposure. There was a tendency for interveinal necrosis to be near the midvein. The extra-floral nectaries which line the leaf margins of marigold were scorched in 15 of the 39 cultivars. This injury may be of diagnostic value. Sepals were very sensitive to SO/sub 2/. Sepal injury appeared as a pinpoint scorch and as tip burn, and was apparent in some cultivars when no foliar injury occurred. 12 references, 1 figure, 1 table.

Authors:
;
Publication Date:
Research Org.:
Univ. of Florida, Bradenton
OSTI Identifier:
7132749
Alternate Identifier(s):
OSTI ID: 7132749
Resource Type:
Journal Article
Resource Relation:
Journal Name: HortScience; (United States); Journal Volume: 17:4
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; AIR POLLUTION; BIOLOGICAL EFFECTS; LEAVES; NECROSIS; SULFUR DIOXIDE; TOXICITY; FOLIAR UPTAKE; PLANTS; SENSITIVITY; CHALCOGENIDES; OXIDES; OXYGEN COMPOUNDS; PATHOLOGICAL CHANGES; POLLUTION; SULFUR COMPOUNDS; SULFUR OXIDES; UPTAKE 560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987); 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989)

Citation Formats

Howe, T.K., and Woltz, S.S. Sensitivity and symptomology of marigold cultivars exposed to acute sulfur dioxide. United States: N. p., 1982. Web.
Howe, T.K., & Woltz, S.S. Sensitivity and symptomology of marigold cultivars exposed to acute sulfur dioxide. United States.
Howe, T.K., and Woltz, S.S. Sun . "Sensitivity and symptomology of marigold cultivars exposed to acute sulfur dioxide". United States.
@article{osti_7132749,
title = {Sensitivity and symptomology of marigold cultivars exposed to acute sulfur dioxide},
author = {Howe, T.K. and Woltz, S.S.},
abstractNote = {Thirty-nine cultivars of marigold (Tagetes spp.) were exposed to sulfur dioxide to determine their relative sensitivity. Flowering plants were fumigated at 1 ppM SO/sub 2/ for 4 hours or at 2 ppM SO/sub 2/ for 2 hours. The average foliar injury for all leaves on individual plants ranged from 42.3% for 'Crackerjack Mix' at 2 ppM SO/sub 2/ to 0.0% for 'Cupid Yellow' at 1 ppM SO/sub 2/. Foliar necrosis appeared as a gray to white marginal and/or interveinal scorch 1 day after exposure. There was a tendency for interveinal necrosis to be near the midvein. The extra-floral nectaries which line the leaf margins of marigold were scorched in 15 of the 39 cultivars. This injury may be of diagnostic value. Sepals were very sensitive to SO/sub 2/. Sepal injury appeared as a pinpoint scorch and as tip burn, and was apparent in some cultivars when no foliar injury occurred. 12 references, 1 figure, 1 table.},
doi = {},
journal = {HortScience; (United States)},
number = ,
volume = 17:4,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 1982},
month = {Sun Aug 01 00:00:00 EDT 1982}
}