The change of amino acids in leaves of maize seedlings under alternative split-root osmotic stress
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DOI:10.7606/j.issn.1000-7601.2004.01.10
Key Words: maize  split-root osmotic stress  leaf water potential  soluble sugar  amino acid
Author NameAffiliation
CAO Rang College of Life Science,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China 
LIANG Zong-suo College of Life Science,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,ChinaInstitute of Soil and Water Conservation,CAS,Yangling,Shaanxi 712100,China 
WU Yong-jun College of Life Science,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China 
ZHANG Lin-sheng College of Life Science,Northwest Sci-Tech University of Agriculture and Forestry,Yangling,Shaanxi 712100,China 
KANG Shao-zhong College of Water Conservancy and Architectural Enqineering,Northwest Sci-Tech University of Agriculture and Foresty,Yangling,Shaanxi 712100,China 
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Abstract:
      The experiment was coducted to discover the change of water potential, soluble sugar, NH4+, and amino acids in leaves of maize seedlings under alternative split-root osmotic stress. The results showed that when half roots were put into high water potential solution and another half into low water potential solution, and alternated them every 24 hours, the contents of soluble sugar, NH4+ and amino acids in the leaves were lower than that under non-split-root stress with  the same concentration; the change of leaf water potential was reverse. This proved that alternative split-root osmotic stress had a compensation effect on roots, thus it improved water use efficiency.