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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (7): 1-4.doi: 10.11924/j.issn.1000-6850.2013-2678

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Adaptation Mechanisms of Typical Psammophyte Artemisia wudanica on Sand Dune: Canopy Seed Bank and Myxospermy

  

  • Received:2013-10-14 Revised:2013-11-08 Online:2014-03-05 Published:2014-03-05

Abstract: In order to expound the ecological function of two mechanisms in colonization of Artemisia wudanica on the active dune, the author summarized the previous study of typical psammophyte A.wudanica on the influences of canopy seed bank on seed bank pattern, germination and seedling emergence, and the effects of seed mucilage on seed dispersal and germination. The results showed that, canopy seed bank and myxospermy contributed seeds gradually and facilitated aggregated distribution of seedling around the mother plant of A.wudanica. Canopy seed bank and myxospermy function to adjust seed dispersal, seed bank pattern and timing of seed germination and seedling emergence to alleviate the impacts of erosion and sand burial, seasonal drought on seed availability and seedling recruitment, making establishment of psammophytes easier. It had some implications in the vegetation restoration and plant diversity conservation in the sand dune field.