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《Arid Zone Research》 2006-02
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Salt-tolerant Physiological and Biochemical Properties of Ten Species of Chenopodiaceae Halophytes Growing in Deserts,Xinjiang

SUN Li,LIU Shi-hui,SHI Xiang-dong,XIAO Min,TANG Zhao-yun,ZHU Hong-wei,CHEN Jian-zhong (College of Life Science,Shihezi University,Shihezi 832003,Xinjiang,China)  
The area of the regions with saline soil in Xinjiang is as large as 1.1×10~7 hm~2,it occupies 1/3 of the total in China and 6.6% of the land area of Xinjiang.Secondary soil salinization occurs in 1/3 areas under cultivation,and secondary soil salinization is one of the main causes resulting in low yield of crops in Xinjiang.Saline soil is harmful for growing crops but suitable for the growth of halophytes.The species of Chenopodiaceae halophytes is the most in Xinjiang,so to research the mechanism of salt tolerance of halophytes is of significance for improving saline soil and ecological environment and developing the germplasm resources of salt tolerance of halophytes.In this paper,the salt-tolerant physiological and biochemical properties of ten species of Chenopodiaceae halophytes growing in deserts,Xinjiang,are researched.The test plants include Kalidium foliatum Moq.,Salicornia europaea L.,Salsola ferganica Drob.,Suaeda glauca Bge.,S.salsa Pall.,S.linifolia Pall.,S.altissima Pall.,Atriplex micrantha C.A.Mey.,A.tatarica L.and Bassia hyssopifolia O.Kuntze.The results show that the average values of the contents of MDA,free praline,organic acids,SOD and POD activity of function leaves of Chenopodiaceae halophytes are higher than that of the non-halophytes,but the average values of the contents of soluble sugar and cell membrane permeability are lower.These reveal that there are some differences in many physiological and biochemical properties between halophytes and non-halophytes.The correlations and the salt-tolerant physiological significances of these indexes are primarily studied.The results can provide the references for researching the mechanisms of salt resistance in halophytes.
【Fund】: 石河子大学科学技术研究发展计划项目(ZRKX2005070)
【CateGory Index】: Q945.78
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