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| rdf:type
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| Description
| - Response of grapevine leaf tissue naturally infected by Plasmopara viticola in fi eld was measured by means of chlorophyll fl uorescence and refl ectance signals. Three susceptible grapevine varieties (Cabernet Sauvignon, Pinot Blanc and Pinot Gris) were used in this study. Since the infection impairs photosynthetic activity, distribution of FV/FM parameter (maximum quantum yield of Photosystem II) over the leaf was eff ective to discriminate healthy and naturally infected leaf tissue. FV/FM was reduced 25% in all infected leaf parts. Infected leaf spots expressed signifi cantly altered chlorophyll fl uorescence induction kinetics expressing much slower electron transport rate both on donor and acceptor site of PSII. Vegetation refl ectance indices followed the variations in pigment content a er the fungal infection. R750/R700 (R2 = 0.877) and CRI (carotenoid refl ectance index; R2 = 0.735) were the most potent to follow changes in chlorophylls and carotenoids contents, respectively. Infected leaf tissue exhibited decrease in chlorophyll a (50 %) as well as carotenoids (70%). We conclude that combination of chlorophyll fl uorescence and refl ectance measurements can be used as an eff ective non-invasive tool for an early detection of Plasmopara viticola in fi eld as well as for estimation of the level of infection.
- Response of grapevine leaf tissue naturally infected by Plasmopara viticola in fi eld was measured by means of chlorophyll fl uorescence and refl ectance signals. Three susceptible grapevine varieties (Cabernet Sauvignon, Pinot Blanc and Pinot Gris) were used in this study. Since the infection impairs photosynthetic activity, distribution of FV/FM parameter (maximum quantum yield of Photosystem II) over the leaf was eff ective to discriminate healthy and naturally infected leaf tissue. FV/FM was reduced 25% in all infected leaf parts. Infected leaf spots expressed signifi cantly altered chlorophyll fl uorescence induction kinetics expressing much slower electron transport rate both on donor and acceptor site of PSII. Vegetation refl ectance indices followed the variations in pigment content a er the fungal infection. R750/R700 (R2 = 0.877) and CRI (carotenoid refl ectance index; R2 = 0.735) were the most potent to follow changes in chlorophylls and carotenoids contents, respectively. Infected leaf tissue exhibited decrease in chlorophyll a (50 %) as well as carotenoids (70%). We conclude that combination of chlorophyll fl uorescence and refl ectance measurements can be used as an eff ective non-invasive tool for an early detection of Plasmopara viticola in fi eld as well as for estimation of the level of infection. (en)
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| Title
| - Response of grapevine leaves to plasmopara viticola infection by means of measurement of reflectance and fluorescence signals
- Response of grapevine leaves to plasmopara viticola infection by means of measurement of reflectance and fluorescence signals (en)
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| skos:prefLabel
| - Response of grapevine leaves to plasmopara viticola infection by means of measurement of reflectance and fluorescence signals
- Response of grapevine leaves to plasmopara viticola infection by means of measurement of reflectance and fluorescence signals (en)
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| skos:notation
| - RIV/67179843:_____/12:00426673!RIV14-MSM-67179843
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - I, P(ED1.1.00/02.0073), P(GA522/09/1565)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/67179843:_____/12:00426673
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Plasmopara viticola; downy mildew; grapevine; leaf tissue; susceptible varieties; chlorophyll fluorescence imaging; reflectance (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Olejníčková, Julie
- Šebela, David
- Sotolář, R.
- Župčanová, A.
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| issn
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| number of pages
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