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| 温度和干旱胁迫对3种牧草种子萌发的影响 | |
| 引用本文： | 王海宁,张建利,冯林,毕玉芬.温度和干旱胁迫对3种牧草种子萌发的影响[J].草业科学,2009,26(8):87-92. |
| 作者姓名： | 王海宁 张建利 冯林 毕玉芬 |
| 作者单位： | 1. 云南农业大学教育部农业生物多样性与病虫害控制重点实验室,云南,昆明,650201 2. 云南农业大学动物科学院,云南,昆明650201 3. 云南省永胜县畜牧局,云南,永胜674214 |
| 基金项目： | 公益性行业(农业)科研专项经费项目(nyhyzx07-022);;云南省自然科学基金重点项目(2003C0008Z);;云南省自然科学基金项目(2008ZC055M);;云南省教育厅科研基金项目(07Y10385) |
| 摘 要： | 对扭黄茅Heteropogon contortus、鸭茅Dactylis glomerata、高羊茅Festuca arundinacea 3种牧草，进行了3个不同温度、4个不同干旱胁迫强度的种子萌发试验，分别测定了牧草品种的发芽率、发芽势和萌发指数，并进行了统计分析。研究结果表明：在自然条件下，扭黄茅种子萌发是在常温条件下完成的。不同温度和聚乙二醇胁迫强度处理影响下，扭黄茅种子均先于鸭茅和高羊茅种子萌发23 d，扭黄茅萌发指数均高于鸭茅和高羊茅。低胁迫干旱强度有助于扭黄茅种子萌发，当干旱胁迫强度超过一定程度（-3 Pa）时不利于种子萌发。扭黄茅对干热河谷生态条件的适应性主要由种子萌发后的植株生长适应性决定的。 |
| 关 键 词： | 牧草 种子萌发 胁迫 扭黄茅 |
Effect of temperature and drought stress on seed germination of three forage species |
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| WANG Hai-ning,ZHANG Jian-li,FENG Lin,BI Yu-fen.Effect of temperature and drought stress on seed germination of three forage species[J].Pratacultural Science,2009,26(8):87-92. | |
| Authors: | WANG Hai-ning ZHANG Jian-li FENG Lin BI Yu-fen |
| Institution: | 1.Key Laboratory for Agro-biodiversity and Pest Management of Education Ministry;Yunnan Agricultural University;Kunming 650201;China;2.College of Animal Science and Technology;3.Animal Husbandry Bureau of Yongsheng County;Yongsheng 674214;China |
| Abstract: | The seeds of Heteropogon contortus,Dactylis glomerata and Festuca arundinacea were used for seed germination tests under temperature and drought stress.Seed germination rate,germination vigor and germination index of 3 forage species treated with 3 different temperatures and 4 different drought stress levels were measured.The results showed the seeds of H.contortus could germinate under the room temperature in natural environment.The seedling emergence of H.contortus was 2 to 3 days earlier than D.glomerata... |
| Keywords: | forage seed germination stress Heteropogon contortus |
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