Growth analysis of UV‐B‐irradiated cucumber seedlings as influenced by photosynthetic photon flux source and cultivar
Identifieur interne : 001363 ( Main/Exploration ); précédent : 001362; suivant : 001364Growth analysis of UV‐B‐irradiated cucumber seedlings as influenced by photosynthetic photon flux source and cultivar
Auteurs : Donald T. Krizek [États-Unis] ; Roman M. Mirecki [États-Unis] ; George F. Kramer [États-Unis]Source :
- Physiologia Plantarum [ 0031-9317 ] ; 1994-03.
English descriptors
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Abstract
A growth analysis was made of ultraviolet‐B (UV‐B)‐sensitive (Poinsett) and insensitive (Ashley) cultivars of Cucuumis satives L. grown in growth chambers at 600 μmol m−2 s−1 of photosynthetic photon flux (PPF) provided by red‐ and far‐red‐deficient metal halide (MH) or blue‐ and UV‐A‐deficient high pressure sodium/deluxe f HPS/DX) lamps. Plants were irradiated 6 h daiiy with 0.2 f‐UV‐B) or 18.2 C+UV‐B) kJ m−2 day−1 of biologically effective UV‐B for 8 or 15 days from time of seeding. In general, plants given supplemental UV‐B for 15 days showed lower leaf area ratio (LARs, and higher specific leaf mass (SLM) mean relative growth rate (MRGR) and net assimilation rate (NAR) than that of control plants, but they showed no difference in leaf mass ratio (LMR), Plants grown under HPS/DX lamps vs MH lamps showed higher SLM and NAR. lower LAR and LMR. hut no difference in MRGR. LMR was the only growth parameter affected by cultivar: at 15 days, it was slightly greater in Poinsett than in Ashley. There were no interactive effects of UV‐B. PPF source or cultivar on any of the growth parameters determined, indicating that the choice of either HPS/DX or MH lamps should not affect growth response to UV‐B radiation. This was true even though leaves of UV‐B‐irradiated plants grown under HPS/DX lamps have been shown to have greater chlorosis than those grown under MH lamps.
Url:
DOI: 10.1111/j.1399-3054.1994.tb08819.x
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Krizek</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Maryland</region></placeName><wicri:cityArea>D. T. Krizek (corresponding auther et al., Climate Stress Laboratory, ARS. USDA. Beltsville</wicri:cityArea></affiliation></author><author><name sortKey="Mirecki, Roman M" sort="Mirecki, Roman M" uniqKey="Mirecki R" first="Roman M." last="Mirecki">Roman M. Mirecki</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Maryland</region></placeName><wicri:cityArea>D. T. Krizek (corresponding auther et al., Climate Stress Laboratory, ARS. USDA. Beltsville</wicri:cityArea></affiliation></author><author><name sortKey="Kramer, George F" sort="Kramer, George F" uniqKey="Kramer G" first="George F." last="Kramer">George F. Kramer</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Maryland</region></placeName><wicri:cityArea>D. T. Krizek (corresponding auther et al., Climate Stress Laboratory, ARS. USDA. Beltsville</wicri:cityArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Physiologia Plantarum</title><idno type="ISSN">0031-9317</idno><idno type="eISSN">1399-3054</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1994-03">1994-03</date><biblScope unit="volume">90</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="593">593</biblScope><biblScope unit="page" to="599">599</biblScope></imprint><idno type="ISSN">0031-9317</idno></series><idno type="istex">90E1B28A0FE81457DA6C68F90E2413EBD0399416</idno><idno type="DOI">10.1111/j.1399-3054.1994.tb08819.x</idno><idno type="ArticleID">PPL593</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-9317</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cucumber</term><term>Cucumis sativus</term><term>high pressure sodium/deluxe lamps</term><term>leaf area ratio. leaf mass ratio</term><term>metal halide lamps</term><term>net assimilation rate</term><term>relative growth rate</term><term>specific leaf area</term><term>specific leaf mass. UV‐B radiation</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A growth analysis was made of ultraviolet‐B (UV‐B)‐sensitive (Poinsett) and insensitive (Ashley) cultivars of Cucuumis satives L. grown in growth chambers at 600 μmol m−2 s−1 of photosynthetic photon flux (PPF) provided by red‐ and far‐red‐deficient metal halide (MH) or blue‐ and UV‐A‐deficient high pressure sodium/deluxe f HPS/DX) lamps. Plants were irradiated 6 h daiiy with 0.2 f‐UV‐B) or 18.2 C+UV‐B) kJ m−2 day−1 of biologically effective UV‐B for 8 or 15 days from time of seeding. In general, plants given supplemental UV‐B for 15 days showed lower leaf area ratio (LARs, and higher specific leaf mass (SLM) mean relative growth rate (MRGR) and net assimilation rate (NAR) than that of control plants, but they showed no difference in leaf mass ratio (LMR), Plants grown under HPS/DX lamps vs MH lamps showed higher SLM and NAR. lower LAR and LMR. hut no difference in MRGR. LMR was the only growth parameter affected by cultivar: at 15 days, it was slightly greater in Poinsett than in Ashley. There were no interactive effects of UV‐B. PPF source or cultivar on any of the growth parameters determined, indicating that the choice of either HPS/DX or MH lamps should not affect growth response to UV‐B radiation. This was true even though leaves of UV‐B‐irradiated plants grown under HPS/DX lamps have been shown to have greater chlorosis than those grown under MH lamps.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Maryland</li></region></list><tree><country name="États-Unis"><region name="Maryland"><name sortKey="Krizek, Donald T" sort="Krizek, Donald T" uniqKey="Krizek D" first="Donald T." last="Krizek">Donald T. Krizek</name></region><name sortKey="Kramer, George F" sort="Kramer, George F" uniqKey="Kramer G" first="George F." last="Kramer">George F. Kramer</name><name sortKey="Mirecki, Roman M" sort="Mirecki, Roman M" uniqKey="Mirecki R" first="Roman M." last="Mirecki">Roman M. Mirecki</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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