Differential response of buddleia (Buddleia davidii Franch.) to ozone
Identifieur interne : 000C04 ( PascalFrancis/Curation ); précédent : 000C03; suivant : 000C05Differential response of buddleia (Buddleia davidii Franch.) to ozone
Auteurs : D. A. Findley [États-Unis] ; G. J. Keever [États-Unis] ; A. H. Chappelka [États-Unis] ; D. J. Eakes [États-Unis] ; C. H. Gilliam [États-Unis]Source :
- Environmental pollution : (1987) [ 0269-7491 ] ; 1997.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
Five cultivars of buddleia, Buddleia davidii Franch., were exposed to sub-ambient, ambient, and twice-ambient levels of ozone in open-top chambers for 8 weeks (June-August) during 1995. Plants were evaluated for foliar injury, growth index, and inflorescence characteristics during and following exposure. Destructive harvests were conducted at the end of the exposure period to determine dry weights of both above- and below-ground plant components. All cultivars had symptoms of visible injury in the twice- ambient treatment at both three and eight weeks after exposures began. No visible symptoms were observed at ambient ozone concentrations. At three weeks of exposure, 'Pink Delight' had the highest percentage of the leaves injured (PLI), 46. 2%, followed by 'Opera' with a PLI of 23.3%. The other three cultivars had similar PLls of less than 15%. After eight weeks of exposure, visible injury was equally severe on all cultivars with a mean PLI of 50.2% and mean Horsfall-Barratt rating of 5.4, indicating 12 to 25% of the leaf area was injured. No ozone x cultivar interaction was found for any growth variable measured. Across cultivars, growth index was reduced by 6%, total dry weight by 35%, and the number of developing floral buds and inflorescences by 29% for plants in twice-ambient ozone concentrations compared to ambient ozone concentrations. Percent biomass allocated to inflorescences was significantly greater for plants exposed to sub-ambient levels compared to those exposed to ozone at either ambient or twice-ambient concentrations. Results indicate that ozone levels similar to those in large urban areas in the southeastern United States have the potential to reduce growth and flowering of this important landscape plant.
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<series><title level="j" type="main">Environmental pollution : (1987)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomass</term>
<term>Cultivar</term>
<term>Damage</term>
<term>Flowering</term>
<term>Growth</term>
<term>Open top chamber</term>
<term>Ozone</term>
<term>Sensitivity resistance</term>
<term>United States</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Ozone</term>
<term>Chambre ciel ouvert</term>
<term>Dégât</term>
<term>Croissance</term>
<term>Floraison</term>
<term>Cultivar</term>
<term>Etats Unis</term>
<term>Sensibilité résistance</term>
<term>Biomasse</term>
<term>Buddleja davidii</term>
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<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Ozone</term>
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<front><div type="abstract" xml:lang="en">Five cultivars of buddleia, Buddleia davidii Franch., were exposed to sub-ambient, ambient, and twice-ambient levels of ozone in open-top chambers for 8 weeks (June-August) during 1995. Plants were evaluated for foliar injury, growth index, and inflorescence characteristics during and following exposure. Destructive harvests were conducted at the end of the exposure period to determine dry weights of both above- and below-ground plant components. All cultivars had symptoms of visible injury in the twice- ambient treatment at both three and eight weeks after exposures began. No visible symptoms were observed at ambient ozone concentrations. At three weeks of exposure, 'Pink Delight' had the highest percentage of the leaves injured (PLI), 46. 2%, followed by 'Opera' with a PLI of 23.3%. The other three cultivars had similar PLls of less than 15%. After eight weeks of exposure, visible injury was equally severe on all cultivars with a mean PLI of 50.2% and mean Horsfall-Barratt rating of 5.4, indicating 12 to 25% of the leaf area was injured. No ozone x cultivar interaction was found for any growth variable measured. Across cultivars, growth index was reduced by 6%, total dry weight by 35%, and the number of developing floral buds and inflorescences by 29% for plants in twice-ambient ozone concentrations compared to ambient ozone concentrations. Percent biomass allocated to inflorescences was significantly greater for plants exposed to sub-ambient levels compared to those exposed to ozone at either ambient or twice-ambient concentrations. Results indicate that ozone levels similar to those in large urban areas in the southeastern United States have the potential to reduce growth and flowering of this important landscape plant.</div>
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<fC01 i1="01" l="ENG"><s0>Five cultivars of buddleia, Buddleia davidii Franch., were exposed to sub-ambient, ambient, and twice-ambient levels of ozone in open-top chambers for 8 weeks (June-August) during 1995. Plants were evaluated for foliar injury, growth index, and inflorescence characteristics during and following exposure. Destructive harvests were conducted at the end of the exposure period to determine dry weights of both above- and below-ground plant components. All cultivars had symptoms of visible injury in the twice- ambient treatment at both three and eight weeks after exposures began. No visible symptoms were observed at ambient ozone concentrations. At three weeks of exposure, 'Pink Delight' had the highest percentage of the leaves injured (PLI), 46. 2%, followed by 'Opera' with a PLI of 23.3%. The other three cultivars had similar PLls of less than 15%. After eight weeks of exposure, visible injury was equally severe on all cultivars with a mean PLI of 50.2% and mean Horsfall-Barratt rating of 5.4, indicating 12 to 25% of the leaf area was injured. No ozone x cultivar interaction was found for any growth variable measured. Across cultivars, growth index was reduced by 6%, total dry weight by 35%, and the number of developing floral buds and inflorescences by 29% for plants in twice-ambient ozone concentrations compared to ambient ozone concentrations. Percent biomass allocated to inflorescences was significantly greater for plants exposed to sub-ambient levels compared to those exposed to ozone at either ambient or twice-ambient concentrations. Results indicate that ozone levels similar to those in large urban areas in the southeastern United States have the potential to reduce growth and flowering of this important landscape plant.</s0>
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<fC02 i1="02" i2="X"><s0>002A14D05F</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Ozone</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>01</s5>
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<fC03 i1="01" i2="X" l="ENG"><s0>Ozone</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="GER"><s0>Ozon</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Ozono</s0>
<s2>NK</s2>
<s2>FX</s2>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Chambre ciel ouvert</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Open top chamber</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Cámara cielo abierto</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Dégât</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Damage</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Estrago</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Croissance</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Growth</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Crecimiento</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Floraison</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Flowering</s0>
<s5>05</s5>
</fC03>
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<s5>05</s5>
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<s5>06</s5>
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<fC03 i1="06" i2="X" l="ENG"><s0>Cultivar</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Cultivar</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Etats Unis</s0>
<s2>NG</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>United States</s0>
<s2>NG</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="GER"><s0>Vereinigte Staaten</s0>
<s2>NG</s2>
<s5>07</s5>
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<fC03 i1="07" i2="X" l="SPA"><s0>Estados Unidos</s0>
<s2>NG</s2>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Sensibilité résistance</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Sensitivity resistance</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Sensibilidad resistencia</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Biomasse</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Biomass</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Biomasa</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Buddleja davidii</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>77</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Amérique du Nord</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>North America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="GER"><s0>Nordamerika</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>America del norte</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Amérique</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Polluant</s0>
<s5>33</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Pollutant</s0>
<s5>33</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Contaminante</s0>
<s5>33</s5>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Arbuste ornemental</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Ornamental shrub</s0>
<s5>40</s5>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Arbusto ornamental</s0>
<s5>40</s5>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Buddlejaceae</s0>
<s2>NS</s2>
<s5>46</s5>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Buddlejaceae</s0>
<s2>NS</s2>
<s5>46</s5>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Buddlejaceae</s0>
<s2>NS</s2>
<s5>46</s5>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Dicotyledones</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="FRE"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="ENG"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="SPA"><s0>Angiospermae</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="08" i2="X" l="FRE"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="08" i2="X" l="ENG"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="08" i2="X" l="SPA"><s0>Spermatophyta</s0>
<s2>NS</s2>
</fC07>
<fN21><s1>103</s1>
</fN21>
</pA>
</standard>
</inist>
</record>
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