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| 科尔沁沙地西部草甸植物萌发特征 | |
| 引用本文： | 李荣平,刘志民,闫巧玲.科尔沁沙地西部草甸植物萌发特征[J].草业学报,2006,15(1):22-28. |
| 作者姓名： | 李荣平 刘志民 闫巧玲 |
| 作者单位： | 1. 中国气象局沈阳大气环境研究所,辽宁,沈阳,110016 2. 中国科学院沈阳应用生态研究所,辽宁,沈阳,110016 3. 中国科学院沈阳应用生态研究所,辽宁,沈阳,110016;中国科学院研究生院,北京,100039 |
| 基金项目： | 中国科学院前沿领域研究基金 , 中国气象局沈阳大气环境研究所科研项目 |
| 摘 要： | 研究了科尔沁沙地西部64种草甸植物在实验室条件下的萌发特征.结果表明,1)64种草甸植物中,30种植物发芽率超过80%,41种植物发芽率超过50%;2)12种禾本科植物中有8种萌发率达85%以上,5种菊科植物发芽率超过85%,所有豆科植物发芽率都小于50%;3)种子萌发能力与生活型相关,一年生植物种子较容易发芽,灌木种子最不易发芽;4)种子萌发能力与种子形态学特征有关,大多数小种子物种具有高萌发率,圆锥形或钻形的种子较大的发芽率,具芒和毛的种子偏向高萌发能力. |
| 关 键 词： | 发芽率 植物繁殖对策 种子形态学特征 科尔沁 沙地 草甸植物 形态学特征 Steppe Western species plant characteristics 和毛 圆锥形 灌木种子 植物种子 相关 生活型 能力 种子萌发 豆科植物 菊科植物 萌发率 |
| 文章编号： | 1004-5759（2006）01-0022-07 |
| 收稿时间： | 2004-08-23 |
| 修稿时间： | 2004年8月23日 |
Germination characteristics of plant species from a meadow in the Western Horqin Steppe |
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| LI Rong-ping,LIU Zhi-min,YAN Qiao-ling.Germination characteristics of plant species from a meadow in the Western Horqin Steppe[J].Acta Prataculturae Sinica,2006,15(1):22-28. | |
| Authors: | LI Rong-ping LIU Zhi-min YAN Qiao-ling |
| Institution: | 1. Institute of Atmospheric Environment,China Meteorological Administration, Shenyang 110016, China; 2. institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China ; 3. Graduate School of the Chinese Academy of Sciences,Beijing 100039,China |
| Abstract: | Under laboratory conditions,the seed germination characteristics of 64 plant species which were taken from a meadow in the western Horqin Steppe were examined.Results showed that:1) germination rates were higher than 80% for 30 of the 64 plant species,with 41 species having a germination rate higher than 50%;2) germination rates of 8 of the 14 species of Gramineae,and 5 species of Compositae were higher than 85%,with the germination rate of all Leguminosae species lower than 50%;3) seed germination was correlated with life forms.Annual herb seeds tended to have high germination rates,but shrub seeds tended to have a low germination ability;4) seed germination was also correlated with morphological characteristics of seeds.The smallest-seeded species showed high germination rates.The quadrate or conical seeds and seeds with antrorse hairs and pappus generally tended to have relatively high germination rates. |
| Keywords: | germination rate plant reproduction strategy morphological characteristics of seeds |
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