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| Description
| - We tested the hypothesis that leaf age affects photosynthetic induction. Photosynthetic inductions were investigated in young and mature leaves, defined by leaf plastochron index 3–5 and 10–14, from 3 poplar clones: Populus alba, nigra and euramericana. Maximum assimilation rates and stomatal conductance were higher in young leaves than in mature leaves. The clones with high photosynthetic capacity had low induction states 60s after leaf illumination (IS60), and required less time to reach 90% photosynthetic induction (T90). Young leaves exhibited a lower transient stomatal limitation than mature leaves. The time constant of Rubisco activation (τ) was significantly higher in mature leaves of P. alba; whereas there were no differences in the other clones. Our hypothesis was confirmed for transient stomatal limitation; however, for the induction parameters IS60, T90 and τ, photosynthetic induction was more clone-specific and was dependent on leaf age only in some cases.
- We tested the hypothesis that leaf age affects photosynthetic induction. Photosynthetic inductions were investigated in young and mature leaves, defined by leaf plastochron index 3–5 and 10–14, from 3 poplar clones: Populus alba, nigra and euramericana. Maximum assimilation rates and stomatal conductance were higher in young leaves than in mature leaves. The clones with high photosynthetic capacity had low induction states 60s after leaf illumination (IS60), and required less time to reach 90% photosynthetic induction (T90). Young leaves exhibited a lower transient stomatal limitation than mature leaves. The time constant of Rubisco activation (τ) was significantly higher in mature leaves of P. alba; whereas there were no differences in the other clones. Our hypothesis was confirmed for transient stomatal limitation; however, for the induction parameters IS60, T90 and τ, photosynthetic induction was more clone-specific and was dependent on leaf age only in some cases. (en)
- Testovali jsme hypotézu, že stáří listu ovlivňuje indukci fotosyntézy. Indukce fotosyntézy byla studována na mladých a dospělých listech, plastochronový index 3–5 a 10–14, tří klonů topolu: Populus alba, nigra a euramericana. Maximální rychlost asimilace a stomatální vodivost byly vyšší u mladých listů v porovnání s dospělými. Klony které vykazovaly vysokou fotosyntetickou kapacitu, se vyznačovaly nízkou hodnotou indukčního stavu po 60s ozáření (IS60) a naopak vyžadovaly kratší čas potřebný pro dosažení 90% maximální hodnoty (T90). Mladé listy vykazovaly ve srovnání se staršími listy nižší hodnoty přechodové stomatální limitace. Časová konstanta pro aktivaci Rubisco (τ) byla sice vyšší u starších listů P. alba, ale u jiných klonů nebyly rozdíly pozorovány. Hypotéza tedy byla potvrzena pro chování přechodové stomatální limitace, ale chování indukčních parametrů IS60, T90 a τ bylo druhově závislé a vliv stáří listu se projevil jen ve specifických případech. (cs)
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| Title
| - Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones
- Porovnání fotosyntetické indukce a přechodových limitací během indukční fáze v mladých a dospělých listech tří klonů topolů (cs)
- Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones (en)
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| skos:prefLabel
| - Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones
- Porovnání fotosyntetické indukce a přechodových limitací během indukční fáze v mladých a dospělých listech tří klonů topolů (cs)
- Comparison of photosynthetic induction and transient limitations during the induction phase in young and mature leaves from three poplar clones (en)
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| skos:notation
| - RIV/67179843:_____/08:00309520!RIV09-AV0-67179843
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(2B06068), P(GP522/05/P515), Z(AV0Z60870520)
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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:_____/08:00309520
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - dynamic light environment; leaf plastochron index; photosynthetic limitations (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
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| http://linked.open...in/vavai/riv/obor
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| 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
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Tomášková, Ivana
- Urban, Otmar
- Šprtová, Mirka
- Košvancová, Martina
- Marek, Vladimír Michal
- Lichtenthaler, H. K.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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| is http://linked.open...avai/riv/vysledek
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