| 生物土壤与生态 |
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| Experimental Study on Development of Moss Propagula in Biotic Crusts of Desert Region |
LI Qin-qin; BAI Xue-liang; REN Xiang-yu
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| College of Life Science, Inner Mongolia University, Hohhot 010021, China |
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Abstract Spore germination and protonema growth of 12 species of mosses are studied at room temperature in response to soil lixivium, distilled water and running water. Vegetative fragments of 6 mosses are studied at the same time. The process of the spore germination and protonema growth are illustrated and taken microphotographs. The result shows that only spores of Aloina obliquifolia(C.Muell)Broth, Pterygoneurum subsessible (Brid.)Jur., Hilpertia velenovskyi (Schiffn.)Zand., Crossidium crassinere(De Notaris)Juratzka can't germinate. In stems and leaves cultivation, mosses except Hilpertia velenovsky (Schiffn.)Zand. produce plentiful protonema, which indicate that drought tolerance mosses have strong asexual reproduction ability. Finally analysis aspects such as spore morpha, germinative time, germinative polarity, germinative type, spore germination and protonema development, as well as reproductive and dispersal characters of fragments of stems and leaves, and discuss the reason that lead to fail at germination as well as the importance of asexual reproduction for individual establishment, with the expectation that supply theoretical and experimental data for reproductive function of mosses in crusts formation.
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Received: 15 March 2007
Published: 20 March 2008
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[1]Harper K T,Marble J R.A role for non-vascular plants in management of arid and semi-arid rangelands [C]∥Tueller,P T,ed.Application of Plant Sciences to Rangeland Management and Inventory.Amsterdam：Martinus Nijhoof /W.Junk,1998:135-169.
[2]West N E.Structure and function of microphytic soil crusts in wildland ecosystems of arid and semi-arid regions[J]．Advances in Ecological Research,1990,20:179-223.
[3]St Clair L L,Johansen J R,Rushforth S R.Lichens of soil crust communities in the intermountain Area of the western United States[J].Great Basin Naturalist,1993,53:5-12.
[4]李守中，肖洪浪，罗芳，等.沙坡头植被固沙区生物结皮对土壤水文过程的调控作用[J].中国沙漠，2005，25(2)：228-233.
[5]刘立超，李守中，宋耀选，等.沙坡头人工植被区微生物结皮对地表蒸发影响的试验研究[J].中国沙漠，2005，25(2)：191-195.
[6]吴鹏程.苔藓植物生物学[M].北京：科学出版社，1998:210-232.
[7]Eldridge D J,Koen T B.Cover and floristics of microphytic soil crusts in relation to indicates of landscape health[J].Plant Ecology,1998,137:101-114.
[8]李新荣，肖洪浪，刘立超，等.腾格里沙漠沙坡头地区固沙植被对生物多样性恢复的长期影响[J].中国沙漠，2005，25(2)：173-181.
[9]徐杰，白学良，田桂泉，等.腾格里沙漠固定沙丘结皮层藓类植物的生态功能及与土壤环境因子的关系[J].中国沙漠，2005，25(2)：234-242.
[10]张萍，白学良，徐杰，等.沙坡头固定沙丘结皮层藓类植物繁殖生物学特性研究[J].中国沙漠，2002，22(6):553-558.
[11]白学良，王瑶，徐杰，等.沙坡头地区固定沙丘结皮层藓类植物的繁殖和生长特性研究[J].中国沙漠，2003，23(2):171-173.
[12]田桂泉，白学良，徐杰，等.腾格里沙漠固定沙丘藓类植物结皮层的自然恢复及人工培养试验研究[J].植物生态学报，2005，29(1):164-169.
[13]Mishler B D.Reproductive ecology of Bryophytes[C]∥Lovett J D,Lovett L D,eds.Plant Reproductive Ecology:Pattern Sand Strategies.New York:Oxford University Press,1988:285-306.
[14]Longton R E,Schuster R M.Reproductive biology[C]∥Schuster R M,eds.New Manual of Bryology.Nichinan,Japan:Hattori Botanical Laboratory,1983.
[15]Wyatt R,Andeson L E.Breeding systems in bryophytes[C]∥Dyer A F,Duckett J G,eds.The Experimental Biology of Bryophytes[C].London: Academic Press,1984:39-64.
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2008, Vol. 28 
