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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (3): 717-723    DOI: 10.7522/j.issn.1000-694X.2013.00103
Biology and Soil     
Root Growth and Ramets Architecture Characteristics of Alhagi sparsifolia under Different Water Treatments
ZHANG Li-gang1,2, ZENG Fan-jiang1, YUAN Na3, LIU Bo1,2, LUO Wei-cheng1,2, SONG Cong1,2, PENG Shou-lan1,2
1.Qira National Station for Observation & Research on Desert Grassland Ecosystem, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ururnqi 830011, China;
2.Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
3.College of Resources and Environment, Northwest A & F University,Yangling 712100, Shaanxi, China
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Abstract  

We chose the dominant plant species Alhagi sparsifolia in the south fringe of the Takelamkan Desert as object, measured and analyzed the effects of different irrigation (A, total 360 mm,twice; B, total 180 mm,once; C, total 180 mm,twice; D,total 0 mm) on the characteristics of root growth of seedlings, aboveground part growth of ramets, root architecture of ramets in Qira, Xinjiang, China. The results showed that the root-shoot ratios of A. sparsifolia seedlings were not significantly different among the four treatments, the root growth depth increased with decreasing soil moisture; the number of the abovegound part of ramets all decreased with increasing soil moisture under different treatments; the plant height, aboveground biomass of ramets under different treatments were significantly different except that aboveground biomass between treatment B and treatment C(p<0.05); the density of ramet population and the spacer between ramets under different treatments were significantly different(p<0.05); ramets growth patterns were from phalanx to guerrilla with decreasing water supply, the branching angle were about 90°, among the four treatments were not significantly different(p>0.05); we found that the soil moisture content of the soil had good correlations with the number of ramets, the number of ramets were in a quadratic curve when the soil moisture content increased.

Key words:  Alhagi sparsifolia      clonal growth      ramets architecture      ramets growth patterns     
Received:  22 February 2012      Published:  16 May 2012
ZTFLH:  Q945.79  

Cite this article: 

ZHANG Li-gang1,2, ZENG Fan-jiang1, YUAN Na3, LIU Bo1,2, LUO Wei-cheng1,2, SONG Cong1,2, PENG Shou-lan1,2. Root Growth and Ramets Architecture Characteristics of Alhagi sparsifolia under Different Water Treatments. JOURNAL OF DESERT RESEARCH, 2013, 33(3): 717-723.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00103     OR     http://www.desert.ac.cn/EN/Y2013/V33/I3/717

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