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| 树干附生尖叶拟船叶藓性比和有性生殖的比例 | |
| 引用本文： | 刘 冰,李 菁,田启建,陈功锡,陈 军.树干附生尖叶拟船叶藓性比和有性生殖的比例[J].广西植物,2008,28(4):440-442. |
| 作者姓名： | 刘 冰 李 菁 田启建 陈功锡 陈 军 |
| 作者单位： | 1. 吉首大学城乡资源与规划学院,湖南,张家界,427000;吉首大学生态研究所,湖南,吉首,416000 2. 吉首大学生态研究所,湖南,吉首,416000 3. 吉首大学城乡资源与规划学院,湖南,张家界,427000 |
| 摘 要： | 通过对贵州梵净山树干附生尖叶拟船叶藓的野外调查和室内研究,结果表明,在44个被调查样方共计1320株植株中,尖叶拟船叶藓单株的性比为8♀∶1♂(N=1320),其中25.0%的单株没有进行性表达;其种群的性比为5♀∶1♀♂(雌性种群:混合种群,N=44),没有发现雄性种群;其单株的有性生殖的比例为10.5%,种群的有性生殖比例为9.3%。结果表明尖叶拟船叶藓种群具有明显的雌性偏向,其种群的自然更新更多的是依赖各种营养繁殖。 |
| 关 键 词： | 尖叶拟船叶藓 树干附生苔藓 性比 有性生殖 |
Sex ratios and rate of sexual reproduction in the epiphytic moss Dolichomitriopsis diversiformis |
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| LIU Bing,LI Jing,TIAN Qi-Jian,CHEN Gong-Xi,CHEN Jun.Sex ratios and rate of sexual reproduction in the epiphytic moss Dolichomitriopsis diversiformis[J].Guihaia,2008,28(4):440-442. | |
| Authors: | LIU Bing LI Jing TIAN Qi-Jian CHEN Gong-Xi CHEN Jun |
| Institution: | 1.College of Resources and Planning Sciences, Jishou University, Zhangjiajie 427000, China; 2.Institute of Ecology, Jishou University, Jishou 416000, China |
| Abstract: | The moss Dolichomitriopsis diversiformis was found on many host tree trunk in Fanjing Mountain of Guizhou,China.A survey of 44 samples revealed an individual sex ratio of 8♀∶1♂(female individuals∶male individuals,N=1 320)with 25.0% individuals non-expressing,and an expressed population sex ratio of 5♀∶1♀♂(female populations∶mixed-sex populations,N=44)with no male population.The rate of individual sexual reproduction and the rate of population sexual reproduction were 10.5% and 9.3% respectively.The results indicated that there existed a remarkable female-biased phenomenon and natural populations were maintained via asexual reproduction in D.diversiformis. |
| Keywords: | Dolichomitriopsis diversiformis epiphytic moss sex ratio sexual reproduction |
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