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Title: Ozone injury on Bel W-3 tobacco controlled by at least two genes

Abstract

Tobacco varieties differ widely in susceptibility to injury by ozone in polluted air. Ordinarily, this injury appears as small flecks on the upper surface of the leaf. The highly susceptible variety Bel W-3, commonly used as an indicator plant for ozone, develops both the flecking plus larger brown or white spots which interfere with the assessment of injury. The highly resistant breeding line 6524 develops no spots but only a few flecks under like conditions. The F/sub 1/ of Bel W-3 x 6524 is intermediate, showing flecks but fewer spots than Bel W-3. The F/sub 2/, however, segregated into 40% highly resistant, 10% highly susceptible, and 50% intermediate individuals. When exposed to ozone, resistant plants developed only a few small flecks, and susceptible plants responded as does Bel W-3. Among the plants in the intermediate group were individuals that formed only larger brown or white spots without fleck. Plants with the severe spot reaction showed injury on the calyx remnant surrounding the seed pod. Microbial infection was not involved. This is the first evidence that the severe symptoms of ozone injury on Bel W-3 are a combination of reactions controlled by at least two separate genes.

Authors:
Publication Date:
Research Org.:
Connecticut Agricultural Experiment Station Valley Lab., Windsor
OSTI Identifier:
6296396
Resource Type:
Journal Article
Journal Name:
Phytopathology; (United States)
Additional Journal Information:
Journal Volume: 58
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; LEAVES; CHLOROSIS; NICOTIANA; SENSITIVITY; OZONE; TOXICITY; AIR POLLUTION; GENES; GENETIC VARIABILITY; GENETICS; BIOLOGICAL VARIABILITY; BIOLOGY; PATHOLOGICAL CHANGES; PLANTS; POLLUTION; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987); 500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Taylor, G S. Ozone injury on Bel W-3 tobacco controlled by at least two genes. United States: N. p., 1968. Web.
Taylor, G S. Ozone injury on Bel W-3 tobacco controlled by at least two genes. United States.
Taylor, G S. Thu . "Ozone injury on Bel W-3 tobacco controlled by at least two genes". United States.
@article{osti_6296396,
title = {Ozone injury on Bel W-3 tobacco controlled by at least two genes},
author = {Taylor, G S},
abstractNote = {Tobacco varieties differ widely in susceptibility to injury by ozone in polluted air. Ordinarily, this injury appears as small flecks on the upper surface of the leaf. The highly susceptible variety Bel W-3, commonly used as an indicator plant for ozone, develops both the flecking plus larger brown or white spots which interfere with the assessment of injury. The highly resistant breeding line 6524 develops no spots but only a few flecks under like conditions. The F/sub 1/ of Bel W-3 x 6524 is intermediate, showing flecks but fewer spots than Bel W-3. The F/sub 2/, however, segregated into 40% highly resistant, 10% highly susceptible, and 50% intermediate individuals. When exposed to ozone, resistant plants developed only a few small flecks, and susceptible plants responded as does Bel W-3. Among the plants in the intermediate group were individuals that formed only larger brown or white spots without fleck. Plants with the severe spot reaction showed injury on the calyx remnant surrounding the seed pod. Microbial infection was not involved. This is the first evidence that the severe symptoms of ozone injury on Bel W-3 are a combination of reactions controlled by at least two separate genes.},
doi = {},
url = {https://www.osti.gov/biblio/6296396}, journal = {Phytopathology; (United States)},
number = ,
volume = 58,
place = {United States},
year = {1968},
month = {8}
}