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- Title
Controlling Soil Factor in Plant Growth and Salt Tolerance of Leguminous Plant Alhagi sparsifolia Shap. in Saline Deserts, Northwest China.
- Authors
Bo Zhang; Dongwei Gui; Xiaopeng Gao; Shareef, Muhammad; Lei Li; Fanjiang Zeng
- Abstract
The understanding of relationships between the plants and environmental variables is important for ecological restoration. The objective of this research was to investigate the controlling soil factor in plant growth and salt tolerance of leguminous plant Alhagi sparsifolia Shap. (A. sparsifolia) in a saline desert ecosystem of western China. Results showed that coverage of A. sparsifolia was positively linked to soil total K. A. sparsifolia accumulated the toxic Na+ in either roots or stems and thus reduced their allocation in the leaves to adapt the salt stress. The most important factor that determined Na+ uptake of A. sparsifolia was soil total K content, which suggests that total K can alleviate toxic Na+ accumulation in A. sparsifolia. In addition, there was a significant negative correlation among toxic Cl- concentration in A. sparsifolia, soil total K and pH. Overall, soil total K accounted for 18.2% of plant growth and salt tolerance of A. sparsifolia, followed by soil pH 13.1%, and soil total P 11.6%. In order to restore A. sparsifolia in the degraded desert ecosystems on salinized soil, first we need to consider the effects of soil total K, and then synergistically consider the soil pH and total P.
- Subjects
LEGUMES; PLANT growth; HALOPHYTES; EFFECT of salt on plants; POTASSIUM; SOIL composition; RESTORATION ecology
- Publication
Contemporary Problems of Ecology, 2018, Vol 11, Issue 1, p111
- ISSN
1995-4255
- Publication type
Article
- DOI
10.1134/S199542551801002X