Effects of different light conditions on the xylem structure of Norway spruce needles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F12%3A00192267" target="_blank" >RIV/62156489:43410/12:00192267 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00468-012-0684-9" target="_blank" >http://dx.doi.org/10.1007/s00468-012-0684-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00468-012-0684-9" target="_blank" >10.1007/s00468-012-0684-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of different light conditions on the xylem structure of Norway spruce needles

Popis výsledku v původním jazyce

Conifer needles are extraordinarily variable and much of this diversity is linked to the water transport capacity of the xylem and to xylem conduit properties. However, we still know little about how anatomical characteristics influence the hydraulic efficiency of needle xylem in different parts of the crown. In this study we evaluated needle function and anatomy in Norway spruce families exposed to different light conditions. We measured tracheid and needle characteristics of sun-exposed and shaded current-year needles in two experimental plots: a control plot and a thinned plot with 50% reduction in stand density. Sun-exposed needles had a larger tracheid lumen area than shaded needles, and this was caused by a larger maximum tracheid lumen diameter,while the minimum lumen diameter was less plastic. Sun-exposed needles had also higher theoretical hydraulic conductivity than shaded needles. Thinning leads to increased radiation to the lower branches, and presumably exposes the upper

Název v anglickém jazyce

Effects of different light conditions on the xylem structure of Norway spruce needles

Popis výsledku anglicky

Conifer needles are extraordinarily variable and much of this diversity is linked to the water transport capacity of the xylem and to xylem conduit properties. However, we still know little about how anatomical characteristics influence the hydraulic efficiency of needle xylem in different parts of the crown. In this study we evaluated needle function and anatomy in Norway spruce families exposed to different light conditions. We measured tracheid and needle characteristics of sun-exposed and shaded current-year needles in two experimental plots: a control plot and a thinned plot with 50% reduction in stand density. Sun-exposed needles had a larger tracheid lumen area than shaded needles, and this was caused by a larger maximum tracheid lumen diameter,while the minimum lumen diameter was less plastic. Sun-exposed needles had also higher theoretical hydraulic conductivity than shaded needles. Thinning leads to increased radiation to the lower branches, and presumably exposes the upper

Druh

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

CEP obor

GK - Lesnictví

OECD FORD obor

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Projekt

<a href="/cs/project/7F09086" target="_blank" >7F09086: Monitoring the vitality of forest ecosystems exposed to drought to assure sustainable forestry during climate change</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Trees - Structure and Function

ISSN

0931-1890

e-ISSN

—

Svazek periodika

26

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

1079-1089

Kód UT WoS článku

306543600001

EID výsledku v databázi Scopus

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