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Title: Ozone and sulfur dioxide effects on three tall fescue cultivars

Abstract

Although many reports have been published concerning differential susceptibility of various crops and/or cultivars to air pollutants, most have used foliar injury instead of the marketable yield as the factor that determined susceptibility for the crop. In an examination of screening in terms of marketable yield, three cultivars of tall fescue (Festuca arundinacea Schreb.), 'Alta,' 'Fawn,' and 'Kentucky 31,' were exposed to 0-0.40 ppm O/sub 3/ or 0-0.50 ppm SO/sub 2/ 6 h/d, once a week, for 7 and 9 weeks, respectively. Experimental design was a randomized complete block with three replications. Statistical analysis was by standard analysis of variance and regression techniques. Three variables were analyzed: top dry weight (yield), tiller number, and weight per tiller. Ozone had a significant effect on all three variables. Significant linear decreases in yield and weight per tiller occurred with increasing O/sub 3/ concentrations. Linear regressions of these variables on O/sub 3/ concentration produced significantly different regression coefficients. The coefficient for Kentucky 31 was significantly greater than Alta or Fawn, which did not differ from each other. This indicated that Kentucky 31 was more susceptible to O/sub 3/ than either of the other cultivars. Percent reductions in dry weight for the three cultivarsmore » at highest O/sub 3/ level were 35, 44, and 53%, respectively, for Fawn, Alta, and Kentucky 31. For weight per tiller, Kentucky 31 had a higher percent reduction than the other cultivars (59 vs. 46 and 44%). Tiller number was generally increased by O/sub 3/, but this variable was not useful for determining differential susceptibility to the pollutant. Sulfur dioxide treatments produced no significant effects on any of the variables analyzed.« less

Authors:
;
Publication Date:
Research Org.:
Univ. of California, Riverside
OSTI Identifier:
5848577
Resource Type:
Journal Article
Resource Relation:
Journal Name: J. Environ. Qual.; (United States); Journal Volume: 11:3
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; GRASS; SENSITIVITY; OZONE; BIOLOGICAL EFFECTS; SULFUR DIOXIDE; INJURIES; PRODUCTIVITY; VARIATIONS; CHALCOGENIDES; OXIDES; OXYGEN COMPOUNDS; PLANTS; SULFUR COMPOUNDS; SULFUR OXIDES; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)

Citation Formats

Flagler, R.B., and Youngner, V.B.. Ozone and sulfur dioxide effects on three tall fescue cultivars. United States: N. p., 1982. Web. doi:10.2134/jeq1982.00472425001100030019x.
Flagler, R.B., & Youngner, V.B.. Ozone and sulfur dioxide effects on three tall fescue cultivars. United States. doi:10.2134/jeq1982.00472425001100030019x.
Flagler, R.B., and Youngner, V.B.. Thu . "Ozone and sulfur dioxide effects on three tall fescue cultivars". United States. doi:10.2134/jeq1982.00472425001100030019x.
@article{osti_5848577,
title = {Ozone and sulfur dioxide effects on three tall fescue cultivars},
author = {Flagler, R.B. and Youngner, V.B.},
abstractNote = {Although many reports have been published concerning differential susceptibility of various crops and/or cultivars to air pollutants, most have used foliar injury instead of the marketable yield as the factor that determined susceptibility for the crop. In an examination of screening in terms of marketable yield, three cultivars of tall fescue (Festuca arundinacea Schreb.), 'Alta,' 'Fawn,' and 'Kentucky 31,' were exposed to 0-0.40 ppm O/sub 3/ or 0-0.50 ppm SO/sub 2/ 6 h/d, once a week, for 7 and 9 weeks, respectively. Experimental design was a randomized complete block with three replications. Statistical analysis was by standard analysis of variance and regression techniques. Three variables were analyzed: top dry weight (yield), tiller number, and weight per tiller. Ozone had a significant effect on all three variables. Significant linear decreases in yield and weight per tiller occurred with increasing O/sub 3/ concentrations. Linear regressions of these variables on O/sub 3/ concentration produced significantly different regression coefficients. The coefficient for Kentucky 31 was significantly greater than Alta or Fawn, which did not differ from each other. This indicated that Kentucky 31 was more susceptible to O/sub 3/ than either of the other cultivars. Percent reductions in dry weight for the three cultivars at highest O/sub 3/ level were 35, 44, and 53%, respectively, for Fawn, Alta, and Kentucky 31. For weight per tiller, Kentucky 31 had a higher percent reduction than the other cultivars (59 vs. 46 and 44%). Tiller number was generally increased by O/sub 3/, but this variable was not useful for determining differential susceptibility to the pollutant. Sulfur dioxide treatments produced no significant effects on any of the variables analyzed.},
doi = {10.2134/jeq1982.00472425001100030019x},
journal = {J. Environ. Qual.; (United States)},
number = ,
volume = 11:3,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1982},
month = {Thu Jul 01 00:00:00 EDT 1982}
}