The influence of the method of silver fir growing and nutrition on sprouting and chlorophyll fluorescence during spring

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020702%3A_____%2F15%3A%230000910" target="_blank" >RIV/00020702:_____/15:#0000910 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.agriculturejournals.cz/publicFiles/145819.pdf" target="_blank" >http://www.agriculturejournals.cz/publicFiles/145819.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/99/2014-JFS" target="_blank" >10.17221/99/2014-JFS</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of the method of silver fir growing and nutrition on sprouting and chlorophyll fluorescence during spring

Popis výsledku v původním jazyce

To compare breaking of dormancy in relation with climatic conditions and reaction to late frost fir plants growing in sun, in shade and at magnesium deficiency were evaluated. Sprouting and chlorophyll a fluorescence of needles measured with the Plant Efficiency Analyser were evaluated from March to May 2011. As a consequence of May frost 100% of plants from sunny treatments and 70% of firs shaded with shade cloth were affected by necrosis of sprouting shoots; fir-trees shaded by the stand remained fully intact. No relationship between the index of shoot sprouting and damage was confirmed. Firs with Mg deficiency had the lowest maximum quantum yield of PSII photochemistry of the dark-adapted tissue (FV/FM) and performance index on absorption basis (PIabs) in the long term. Regression models of parameters FV/FM and PIabs and selected environmental parameters showed that chlorophyll fluorescence was influenced to the largest extent by minimum temperature of the day of measurement. The process of breaking of dormancy increased fir vulnerability to thermal stresses of the environment – late frosts.

Název v anglickém jazyce

The influence of the method of silver fir growing and nutrition on sprouting and chlorophyll fluorescence during spring

Popis výsledku anglicky

To compare breaking of dormancy in relation with climatic conditions and reaction to late frost fir plants growing in sun, in shade and at magnesium deficiency were evaluated. Sprouting and chlorophyll a fluorescence of needles measured with the Plant Efficiency Analyser were evaluated from March to May 2011. As a consequence of May frost 100% of plants from sunny treatments and 70% of firs shaded with shade cloth were affected by necrosis of sprouting shoots; fir-trees shaded by the stand remained fully intact. No relationship between the index of shoot sprouting and damage was confirmed. Firs with Mg deficiency had the lowest maximum quantum yield of PSII photochemistry of the dark-adapted tissue (FV/FM) and performance index on absorption basis (PIabs) in the long term. Regression models of parameters FV/FM and PIabs and selected environmental parameters showed that chlorophyll fluorescence was influenced to the largest extent by minimum temperature of the day of measurement. The process of breaking of dormancy increased fir vulnerability to thermal stresses of the environment – late frosts.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GK - Lesnictví

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Forest Science

ISSN

1212-4834

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

80-88

Kód UT WoS článku

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EID výsledku v databázi Scopus

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