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JOURNAL OF DESERT RESEARCH  2010, Vol. 30 Issue (3): 560-563    DOI:
生物土壤与生态     
The Promoting Effects of Manganese on Nitrogen Fixation by Soybean under Drought
ZHANG Xiao-song, SUN Guang-yu
College of Life College, Northeast Forestry University, Harbin 150040, China
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Abstract  

Taking soybean variety Heinong No.38' (Glycine max (L.) Merrill cv. Heinong No.38) grown in pots as the test material,this paper studied the changes of ureide (allantoin and allantic acid) contents in leaves,acetylene reduction activity of soybean root nodule and activity of allantoate amidohydrolase during day-to-day soil drought after adding MnSO4 to soybean root in pots. The result showed that leaf ureide content increased and the nitrogenase activity of soybean root nodule decreased by feedback inhibition under drought. MnSO4 added to soybean root in pots increased allantoate amidohydrolase in leaves,decreased leaf ureide content during drought,and enhanced N2 fixation. It was suggested that Manganese applied to soybean could promote leaf ureide breakdown,lessen feedback inhibition of nodule activity,and prolong the tolerance of N2 fixation by soybean to drought.

Key words:  Glycine max (L.) Merrill      drought      nitrogen fixation      Manganese     
Received:  04 May 2009      Published:  20 May 2010
ZTFLH:  Q945.78  
Articles by authors
ZHANG Xiao-song
SUN Guang-yu

Cite this article: 

ZHANG Xiao-song;SUN Guang-yu. The Promoting Effects of Manganese on Nitrogen Fixation by Soybean under Drought. JOURNAL OF DESERT RESEARCH, 2010, 30(3): 560-563.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2010/V30/I3/560

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