| 三江源区高寒草甸43种植物繁殖体质量比较 |
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| 引用本文： | 柯君,王慧春,周华坤,赵新全,刘泽华. 三江源区高寒草甸43种植物繁殖体质量比较[J]. 草业科学, 2010, 27(3): 15-20. DOI: 10.3969/j.issn.1001-0629.2010.03.004 |
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| 作者姓名： | 柯君 王慧春 周华坤 赵新全 刘泽华 |
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| 作者单位： | 青海师范大学生命与地理科学学院,青海,西宁,810008;中国科学院西北高原生物研究所,青海,西宁,810001;中国科学院西北高原生物研究所,高原生物适应与进化重点实验室,青海,西宁,810001 |
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| 基金项目： | 中科院西部行动计划二期项目第二课题(KZCX2-XB2-06-02);;国家自然科学基金(30660120);;973计划项目专题(2005CB422005-01) |
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| 摘 要： | 研究了青藏高原三江源地区高寒草甸43种植物的繁殖体(13种为种子,30种为果实)质量,其质量差别很大,最小的单粒质量不足0.03 mg,最大的超过5 mg。有15种植物繁殖体单粒质量小于1 mg,可能具有持久土壤种子库;多年生草本植物较一年生草本植物的繁殖体质量大(P0.05);杂草较优良牧草的繁殖体质量大(P0.01);菊科植物的繁殖体较禾本科、莎草科的质量大(P0.05);繁殖体附属物在植物的传播和定居方面具有重要的作用:75%的菊科植物具有冠毛,易于被风传播,89%的禾本科植物具芒,被风传播的概率小。
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| 关 键 词： | 高寒草甸 繁殖体 质量 附属物 土壤种子库 |
A comparative study on propagule weight of 43 plant species at the alpine meadow in the source region of three rivers |
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| KE Jun,WANG Hui-chun,ZHOU Hua-kun,Zhao Xin-quan,LIU Ze-hua. A comparative study on propagule weight of 43 plant species at the alpine meadow in the source region of three rivers[J]. Pratacultural Science, 2010, 27(3): 15-20. DOI: 10.3969/j.issn.1001-0629.2010.03.004 |
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| Authors: | KE Jun WANG Hui-chun ZHOU Hua-kun Zhao Xin-quan LIU Ze-hua |
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| Affiliation: | 1.Life and Geography Science College;Qinghai Normal University;Qinghai Xining 810008;China;2.Northwest Institute of Plateau Biology;Chinese Academy of Sciences;Qinghai Xining 810001;3.Key Laboratory of Adaptation and Evolution of Plateau Biota;Northwest Plateau Institute of Biology;the Chinese Academy of Sciences;China |
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| Abstract: | In this paper,we studied the propagule weight of 43 plants at the alpine meadow in the source region of three rivers of Tibetan Plateau.There were great differences in their weight,and minimal single grain weight was less than 0.03 mg,and the biggest was over 5 mg.The propagule single grain weights of 15 species(accounting for 35%) were less than 1 mg,and these species might have persistent soil seed bank.The propagule of perennial herb was heavier than annual herb(P<0.05).The propagule of weed was heavier ... |
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| Keywords: | alpine meadow propagule weight appendages soil seed bank |
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