Volume 29 Issue 5
Sep.  2012
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YANG Sheng, ZHANG Hua-xin, LIU Tao. Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress[J]. Journal of Zhejiang A&F University, 2012, 29(5): 744-754. doi: 10.11833/j.issn.2095-0756.2012.05.018
Citation: YANG Sheng, ZHANG Hua-xin, LIU Tao. Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress[J]. Journal of Zhejiang A&F University, 2012, 29(5): 744-754. doi: 10.11833/j.issn.2095-0756.2012.05.018

Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress

doi: 10.11833/j.issn.2095-0756.2012.05.018
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  • Corresponding author: ZHANG Hua-xin
  • Received Date: 2011-10-28
  • Rev Recd Date: 2012-02-13
  • Publish Date: 2012-10-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress

doi: 10.11833/j.issn.2095-0756.2012.05.018
    Corresponding author: ZHANG Hua-xin

Abstract: In order to study morphological changes and physiological characteristics under salt stress,seedlings of 16 tree species were cultivated in pots treated with sodium chloride (NaCl) solutions of 0,100,200,300,400,and 500 mmolL-1 and three replications. Results showed that (1) salt tolerance of Tamarix chinensis,Nitraria tangutorum,and Nitraria sibirica was high;of Euonymus alatus,Salix psammophila,Ligustrum obtusifolium,Elaeagnus angustifolia,Rhamnus cathartica,Celtis laevigata,and Gleditsia triacanthos was medium-high;and of Pyrus betulifolia,Salix maizhokunggarensis,Lonicera tatarica,Buddleja lindleyana,Cephalanthus occidentalis,and Fraxinus americana was medium. (2) With an increase in salinity,relative height growth and biomass significant decreased;however,the malondialdehyde (MDA),proline,and soluble sugar content marked increased for all species. Also,chlorophyll content and superoxide dismutase (SOD activity varied greatly among tree species. In addition,for all physiological indexes,Tamarix chinensis,Nitraria tangutorum,and Nitraria sibirica revealed marked differences from other species. (3) After applying salt treatments,Na+ and Cl- ions in roots,stems,and leaves greatly increased with both ions having a consistent increased. Differences in the Na+ and Cl- content in roots,stems,and leaves showed that except for Tamarix chinensis,Nitraria tangutorum,and Nitraria sibirica,the 13 other tree species were halophytes that excluded salt. These results suggested that different tree species should be selected for the salt content of the soil,so that trees could be grown in suitable soils to increase biodiversity in saline soil. It is necessary to consider salt-tolerance type of plant in the study of plant salt tolerance characteristics.[Ch,9 fig. 2 tab. 31 ref.]

YANG Sheng, ZHANG Hua-xin, LIU Tao. Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress[J]. Journal of Zhejiang A&F University, 2012, 29(5): 744-754. doi: 10.11833/j.issn.2095-0756.2012.05.018
Citation: YANG Sheng, ZHANG Hua-xin, LIU Tao. Morphological changes and physiological characteristics of seedlings from 16 tree species with salt stress[J]. Journal of Zhejiang A&F University, 2012, 29(5): 744-754. doi: 10.11833/j.issn.2095-0756.2012.05.018

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