Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year
Manna oak (Quercus brantii) is the most important tree species in Zagross region of Iran that faces lack of natural regeneration by seed. Forest managers suggest reforestation by seeds or seedlings as the main silvicultural practice, in order to rehabilitate these sites. In spite of the importance o...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | fas |
Published: |
Research Institute of Forests and Rangelands of Iran
2012-05-01
|
Series: | تحقیقات جنگل و صنوبر ایران |
Subjects: | |
Online Access: | http://ijfpr.areeo.ac.ir/article_6102_6b2b28bac82117fdad90c306f7785653.pdf |
id |
doaj-e714a33abc684a6f8d99e3551956678a |
---|---|
record_format |
Article |
spelling |
doaj-e714a33abc684a6f8d99e3551956678a2020-11-24T21:05:54ZfasResearch Institute of Forests and Rangelands of Iranتحقیقات جنگل و صنوبر ایران1735-08832383-11462012-05-01201748310.22092/ijfpr.2012.61026102Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing yearBabak Pilehvar0Mahdi Kakavand1Hasan Akbari2Ahmad Ismailii3Javad Soosani4Zahra Mirazadi5Assistant professor, Forestry Department, Lorestan UniversityB.Sc. student of Forestry, Lorestan UniversityAssistant professor, Agronomy and Plant Breeding Department, Lorestan UniversityAssistant professor, Agronomy and Plant Breeding Department, Lorestan UniversityAssistant professor, Agronomy and Plant Breeding Department, Lorestan UniversityM.Sc. student, Lorestan UniversityManna oak (Quercus brantii) is the most important tree species in Zagross region of Iran that faces lack of natural regeneration by seed. Forest managers suggest reforestation by seeds or seedlings as the main silvicultural practice, in order to rehabilitate these sites. In spite of the importance of shade tolerance in reforestation or seedling production in nurseries, some species such as Mana oak have not been well characterized. A completely random experimental design with light factor at four levels (20%, 40%, 60%, and 100% of sunlight) was used to study morphological and growth response of Manna oak seedlings in the first growing year. There were two samplings i) 100 days after germination and ii) 190 days after germination, using 20 seedlings for each treatment. The results showed that at the lowest light radiation level (20% of full sunlight) height growth, slenderness coefficient, root/shoot biomass ratio, and mean of leaf area increased whreas collar diameter, shoot biomass, net assimilation rate, and relative growth rate decreased. Since, high relative growth rate implies high survival rate, so Manna oak can be considered as shade intolerant species that in nurseries with no humidity limitations has the most efficiency in full sunlight.http://ijfpr.areeo.ac.ir/article_6102_6b2b28bac82117fdad90c306f7785653.pdfShade toleranceZagros forestsnurseryrelative growth ratenet assimilation rate |
collection |
DOAJ |
language |
fas |
format |
Article |
sources |
DOAJ |
author |
Babak Pilehvar Mahdi Kakavand Hasan Akbari Ahmad Ismailii Javad Soosani Zahra Mirazadi |
spellingShingle |
Babak Pilehvar Mahdi Kakavand Hasan Akbari Ahmad Ismailii Javad Soosani Zahra Mirazadi Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year تحقیقات جنگل و صنوبر ایران Shade tolerance Zagros forests nursery relative growth rate net assimilation rate |
author_facet |
Babak Pilehvar Mahdi Kakavand Hasan Akbari Ahmad Ismailii Javad Soosani Zahra Mirazadi |
author_sort |
Babak Pilehvar |
title |
Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year |
title_short |
Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year |
title_full |
Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year |
title_fullStr |
Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year |
title_full_unstemmed |
Growth and morphological responses of Manna oak (Quercus brantii) seedlings to different light levels at nursery in the first growing year |
title_sort |
growth and morphological responses of manna oak (quercus brantii) seedlings to different light levels at nursery in the first growing year |
publisher |
Research Institute of Forests and Rangelands of Iran |
series |
تحقیقات جنگل و صنوبر ایران |
issn |
1735-0883 2383-1146 |
publishDate |
2012-05-01 |
description |
Manna oak (Quercus brantii) is the most important tree species in Zagross region of Iran that faces lack of natural regeneration by seed. Forest managers suggest reforestation by seeds or seedlings as the main silvicultural practice, in order to rehabilitate these sites. In spite of the importance of shade tolerance in reforestation or seedling production in nurseries, some species such as Mana oak have not been well characterized. A completely random experimental design with light factor at four levels (20%, 40%, 60%, and 100% of sunlight) was used to study morphological and growth response of Manna oak seedlings in the first growing year. There were two samplings i) 100 days after germination and ii) 190 days after germination, using 20 seedlings for each treatment. The results showed that at the lowest light radiation level (20% of full sunlight) height growth, slenderness coefficient, root/shoot biomass ratio, and mean of leaf area increased whreas collar diameter, shoot biomass, net assimilation rate, and relative growth rate decreased. Since, high relative growth rate implies high survival rate, so Manna oak can be considered as shade intolerant species that in nurseries with no humidity limitations has the most efficiency in full sunlight. |
topic |
Shade tolerance Zagros forests nursery relative growth rate net assimilation rate |
url |
http://ijfpr.areeo.ac.ir/article_6102_6b2b28bac82117fdad90c306f7785653.pdf |
work_keys_str_mv |
AT babakpilehvar growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear AT mahdikakavand growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear AT hasanakbari growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear AT ahmadismailii growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear AT javadsoosani growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear AT zahramirazadi growthandmorphologicalresponsesofmannaoakquercusbrantiiseedlingstodifferentlightlevelsatnurseryinthefirstgrowingyear |
_version_ |
1716767526785908736 |