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《The Global Seabuckthorn Research and Development》 2014-01
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The Influence on Physiological Characteristics of Switchgrass Seedlings under Soil Drought Stress

Shan Dan;He Jingli;Xing Ende;Liang Zhanqi;Gao Pengcheng;Institute of Water Resources for Pastoral Area of the Ministry of Water Resources of China;Zhengxiangbai county Irrigation Bureau;  
Biomass energy was considered to be an ideal renewable alternative energy and herbaceous energy plants as an important biomass resources became research hot spot all over the world. Switchgrass(Panicum virgatum L.) was international recognized as the most suitable bioenergy plant for the past few years. Provided the basis to a large area of cultivation in arid regions,we studied physiological characteristics of swithgrass seedlings under soil drought condition. The result showed that the leaf water content of swithgrass seedlings decreased with drought stress increasing,but the change kept stable with some water retaining capacity of swithgrass seedlings. Chlorophyll a and total chlorophyll content significantly declined under water stress. The drought affected to chlorophyll a significantly higher than to chlorophyll b. The content of proline and soluble sugar had a large increase in the late drought stress,and like that,the same trend was observed in MDA,which showed soil drought stress had significantly affected by the increase of the proline and soluble sugar in swithgrass seedlings and the characteristics of resistance to soil drought.
【Fund】: 水利部公益性行业科研专项经费项目(201301049);; 大唐国际高铝煤炭研发中心科技项目
【CateGory Index】: S578
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