Root Growth and Ramets Architecture Characteristics of Alhagi sparsifolia under Different Water Treatments
Received date: 2012-02-22
Revised date: 2012-05-16
Online published: 2012-05-16
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.
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[J]. Journal of Desert Research, 2013 , 33(3) : 717 -723 . DOI: 10.7522/j.issn.1000-694X.2013.00103
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