Characteristics of Polar and Weak-polar Distillate in Wheat and Alfalfa Rhizospheric Soil

doi:10.7522/j.issn.1000-694X.2014.00063

JOURNAL OF DESERT RESEARCH

2014, Vol. 34

Issue (6): 1590-1597 DOI: 10.7522/j.issn.1000-694X.2014.00063

Characteristics of Polar and Weak-polar Distillate in Wheat and Alfalfa Rhizospheric Soil

Yue Bin^1,2, Chang Guohua², Zhang Renzhi¹

1. College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China;
2. School of Chemistry and Environmental Science, Lanzhou City University, Lanzhou 730070, China

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Abstract To understand the relationship between root exudates and the dissoluble organic substances in rhizospheric soil,the dissoluble organic substances in rhizospheric soil from wheat and alfalfa field were analyzed by the pole chromatographic composition separation (GC/MS). The polar and weak-polar distillates were analyzed. The results shown that distribution characteristics of biomarkers from different crops rhizospheric soil had great diversities: C₁₁-C₃₂ fatty acids were mainly distributed in wheat rhizosphere soil, C₁₀-C₃₀ fatty acids were mainly distributed in alfalfa rhizosphere soil; hexadecenoic acid, octadecadienoic acid, octadecenoic acid and other unsaturated fatty acids of active substances in the wheat rhizospheric soil were not detected in alfalfa rhizospheric soil. The organic substances evolution degree and the degree of degradation of organic substances in wheat rhizospheric soil were higher than in Alfalfa. In the condition of low evolution degree, distribution characteristic of biomarkers in rhizospheric soil could reflect well the characteristic of root exudates. At the same time, the study was found MPI was a good parameter for identification the degree of evolution and degradation of organic substances in soil.

Key words: rhizospheric soil wheat alfalfa root exudates biomarkers

Received: 15 April 2014 Published: 20 November 2014

ZTFLH:

S153.6

Corresponding Authors: 张仁陟(Email:zhangrz@gsau.edu.cn) E-mail: zhangrz@gsau.edu.cn



	Articles by authors
	Yue Bin
	Chang Guohua
	Zhang Renzhi

Cite this article:

Yue Bin, Chang Guohua, Zhang Renzhi. Characteristics of Polar and Weak-polar Distillate in Wheat and Alfalfa Rhizospheric Soil. JOURNAL OF DESERT RESEARCH, 2014, 34(6): 1590-1597.

URL:

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2014.00063 OR http://www.desert.ac.cn/EN/Y2014/V34/I6/1590

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