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《Journal of Anhui Normal University(Natural Science)》 2007-04
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Study on the Reprouctive Biology of Magnolia Sieboldii in Huangshan Population

YU Xiao-li,CHU Lei,ZHEN Quan,CHEN Ming-lin,LIU Deng-yi(The Provincial Key Laboratory of Conservation and Exploitation of Biological Resources in Anhui,College of Life Sciences,Anhui Normal University,Wuhu 241000,China)  
The reproductive biology of Magnolia Sieboldii including population structure,the insects,pollination by manpower,as well as the ways of dispersal of seed and fruit has been observed and analyzed in this paper.The results showed that in natural conditions,age structure of M.sieboldii was not integrity and its infancy was absent.The rate of fruit set and the rate of seed set were 60.0% and 13.1% respectively in the natural conditions,36.0% and 7.2% respectively as taking out the perianth,64.0 % and 11.7% respectively if there was no stamen;in the condition of two kinds of artificiality,the rate of fruit set were 86.0% and 84.0% respectively,and the rate of seed set were 27.0% and 32.2% respectively.Four species of Coleoptera and bee were the most effective pollinators based on our observation.And the efficiency of pollination of Coleoptera was 6.72-10.48,and the efficiency of pollination of bee was 32.58;In natural conditions,seed productivity and fructification ratio of M.sieboldii were different from each other,the Cv was 46.53;and the Cv of two kinds of artificiality were 16.34 and 15.96 respectively.The ways of dispersal of seedand fruit included dispersal by gravity,dispersal by river,as well as dispersal by animals.
【Fund】: 国家自然科学基金(30470270);; 安徽省自然科学基金(03943501);; 安徽省“重要生物资源保护与利用安徽省重点实验室”基金
【CateGory Index】: Q948
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