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MORPHO-PHYSIOLOGICAL RESPONSES OF ALHAGI SPARSIFOLIA SHAP. (LEGUMINOSAE) SEEDLINGS TO PROGRESSIVE DROUGHT STRESS

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dc.contributor.author ZENG, FANJIANG
dc.contributor.author ZHANG, BO
dc.contributor.author LU, YAN
dc.contributor.author Li, CHANGJUN
dc.contributor.author LIU, BO
dc.contributor.author GUIXIANG AN, GUIXIANG
dc.date.accessioned 2022-12-07T06:19:51Z
dc.date.available 2022-12-07T06:19:51Z
dc.date.issued 2016-04-02
dc.identifier.citation Liu, B., An, G. U. I. X. I. A. N. G., & Gao, X. I. A. O. P. E. N. G. (2016). Morpho-physiological responses of Alhagi sparsifolia Shap.(leguminosae) seedlings to progressive drought stress. Pak. J. Bot, 48(2), 429-438. en_US
dc.identifier.issn 2070-3368
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/14824
dc.description.abstract Water is a key limiting factor influencing plant growth and development in arid ecosystem. To explore the mechanisms of the desert plant Alhagi sparsifolia seedlings to tolerate drought stress in extreme desert, an experiment was conducted from July to September in 2010 with four water treatments: 100% (W100), 80% (W80), 60% (W60) and 45% (W45) of water holding capacity (WHC). Plant growth, photosynthesis, nutrient content and water use efficiency (WUE) were measured The results showed that plant growth, branch number, biomass allocation, number of leaves and area per leaf as well as leaf area ratio with drought stress treatments (W80, W60 and W45) decreased than W100 treatment, while root/shoot ratio and specific leaf area increased gradually throughout the experimental duration. Furthermore, photosynthetic pigment content, light-saturated photosynthetic rate, and concentration of carbon and nitrogen in plant significantly decreased with increasing drought stress. The WUE at W100 and W80 treatments increased significantly at the beginning of drought stress treatment and then reduced with stress prolonged. In conclusion, the desert plant A. sparsifolia can tolerate the progressive drought stress due to the strong plasticity of morphological and physiological traits. The critical level of soil WHC to limit the growth and dry mass production of A. sparsifolia seedlings in the southern fringe of the Taklimakan Desert was approximately at 45%. en_US
dc.language.iso en en_US
dc.publisher Karachi: Pakistan Journal of Botany , Botanical garden , University of Karachi en_US
dc.subject Alhagi sparsifolia en_US
dc.subject Plant growth en_US
dc.subject Photosynthesis en_US
dc.subject Nutrient content en_US
dc.subject Water holding capacity en_US
dc.title MORPHO-PHYSIOLOGICAL RESPONSES OF ALHAGI SPARSIFOLIA SHAP. (LEGUMINOSAE) SEEDLINGS TO PROGRESSIVE DROUGHT STRESS en_US
dc.type Article en_US


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