Volume 10, Issue 2 (2022)
ECOPERSIA 2022, 10(2): 165-172 |
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Karimi A, Tabari Kouchaksaraei M, javanmard Z, Neirynck J. Drought stress tolerance in seedlings of four deciduous species, common in nurseries of semi-arid region of Iran. ECOPERSIA 2022; 10 (2) :165-172
URL: http://ecopersia.modares.ac.ir/article-24-58450-en.html
URL: http://ecopersia.modares.ac.ir/article-24-58450-en.html
1- M.Sc, Student of Forestry, Department of Forest Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University,Noor, Iran
2- Professor, Department of Forest Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran , mtabari@modares.ac.ir
3- Ph.D in Forestry, Department of Forest Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University,Noor, Iran
4- Senior Scientist, Research Institute for Nature and Forest, Geraardsbergen, Belgium
2- Professor, Department of Forest Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran , mtabari@modares.ac.ir
3- Ph.D in Forestry, Department of Forest Science and Engineering, Faculty of Natural Resources, Tarbiat Modares University,Noor, Iran
4- Senior Scientist, Research Institute for Nature and Forest, Geraardsbergen, Belgium
Abstract: (1119 Views)
Abstract:
Aim: With global warming and limited water resources in the world, especially in arid lands of Iran, managing the production of forest seedlings in the country's nurseries is facing a special challenge. In this regard, the study of drought tolerant plants to select them in the mass seedling production programs can be useful.
Material and methods: Potted seedlings of Persian oak (Quercus brantii Lindl.), pistachio (Pistacia atlantica Desf.), Judas-tree (Cercis siliquastrum L.) and black poplar (Populus nigra L.) exposed to a normal irrigation scheme (100% field capacity) and drought-stressed (30% field capacity) conditions were examined over a period of 120 days in a greenhouse of Bam Khorramabad Nursery to judge their tolerance for drought stress.
Findings: Drought-tressed seedlings from all species had a lower content of chlorophyll a, chlorophyll b, total chlorophyll and carotenoids compared to the control plots, but the content of proline and malondialdehyde (MDA) did, however, increase. Under stress conditions, MDA content in black poplar, Judas-tree, Persian oak and pistachio was 174, 121, 105 and 102% higher than the control seedlings, respectively, and this increase in black poplar over other species ranged from 93.5 to 176.5%.
Conclusion: This study confirms that among four tree species, black poplar has lowest tolerance to drought stress. Thus, Persian oak, pistachio and Judas-tree, should be prioritized in the mass seedling production programs of nurseries in arid areas suffering from limited water resources, due to their higher tolerance to water scarcity.
Aim: With global warming and limited water resources in the world, especially in arid lands of Iran, managing the production of forest seedlings in the country's nurseries is facing a special challenge. In this regard, the study of drought tolerant plants to select them in the mass seedling production programs can be useful.
Material and methods: Potted seedlings of Persian oak (Quercus brantii Lindl.), pistachio (Pistacia atlantica Desf.), Judas-tree (Cercis siliquastrum L.) and black poplar (Populus nigra L.) exposed to a normal irrigation scheme (100% field capacity) and drought-stressed (30% field capacity) conditions were examined over a period of 120 days in a greenhouse of Bam Khorramabad Nursery to judge their tolerance for drought stress.
Findings: Drought-tressed seedlings from all species had a lower content of chlorophyll a, chlorophyll b, total chlorophyll and carotenoids compared to the control plots, but the content of proline and malondialdehyde (MDA) did, however, increase. Under stress conditions, MDA content in black poplar, Judas-tree, Persian oak and pistachio was 174, 121, 105 and 102% higher than the control seedlings, respectively, and this increase in black poplar over other species ranged from 93.5 to 176.5%.
Conclusion: This study confirms that among four tree species, black poplar has lowest tolerance to drought stress. Thus, Persian oak, pistachio and Judas-tree, should be prioritized in the mass seedling production programs of nurseries in arid areas suffering from limited water resources, due to their higher tolerance to water scarcity.
Article Type: Original Research |
Subject:
Forest Ecology and Management
Received: 2022/01/6 | Accepted: 2022/02/20 | Published: 2022/03/19
Received: 2022/01/6 | Accepted: 2022/02/20 | Published: 2022/03/19
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