| 加拿大披碱草与老芒麦及其杂种的生长规律和形态特性 |
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| 引用本文： | 王树彦,云锦凤,徐军,杨洪琴. 加拿大披碱草与老芒麦及其杂种的生长规律和形态特性[J]. 草地学报, 2004, 12(4): 294-297. DOI: 10.11733/j.issn.1007-0435.2004.04.009 |
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| 作者姓名： | 王树彦 云锦凤 徐军 杨洪琴 |
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| 作者单位： | 1. 内蒙古农业大学农学院, 呼和浩特, 010019;2. 内蒙古农业大学生态环境学院, 呼和浩特, 010019;3. 通辽市科尔沁区草原站, 通辽, 028020 |
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| 摘 要： | 研究加拿大披碱草与老芒麦及其杂种的生育时期、生长繁殖特性、穗部形态及育性特征.研究结果表明:加拿大披碱草比老芒麦生育期晚30 d左右,繁殖能力较弱,二者在形态学上有较大差异;其F1代在生长和无性繁殖特性上表现出杂种优势,而育性极为衰退,其它特征则介于双亲之间.
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| 关 键 词： | 草原学 加拿大披碱草 老芒麦 种间杂种 形态学 |
| 文章编号： | 1007-0435(2004)04-0294-04 |
| 收稿时间： | 2004-05-17 |
| 修稿时间： | 2004-05-17 |
Growth and Morphology Characters of Elymus canadensis, Elymus sibiricus and Their Hybrid |
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| WANG Shu-yan,YUN Jin-feng,XU Jun,YANG Hong-qin. Growth and Morphology Characters of Elymus canadensis, Elymus sibiricus and Their Hybrid[J]. Acta Agrestia Sinica, 2004, 12(4): 294-297. DOI: 10.11733/j.issn.1007-0435.2004.04.009 |
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| Authors: | WANG Shu-yan YUN Jin-feng XU Jun YANG Hong-qin |
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| Affiliation: | 1. College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019, China;2. College of Ecology and Environment, Inner Mongolia Agricultural University, Huhhot, Inner Mongoulia Aoutonmous Reigon 010019, China;3. Grassland Station of Kerqin District in TongLiao city, TongLiao, Inner Mongoulia Aoutonmous Reigon 028020, China |
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| Abstract: | Elymus canadensis and Elymus sibiricus are two species that distribute in different regions. A study of their growth period, multiplication, spike morphology and fertility show that E.canadensis'growth period comes about 30 days behind E.sibiricus, with weaker fertility and obvious morphological differences. The hybrid F_1, formed by wide cross between the two species, boasts heterosis, though sterility is its typical character, while the other characteristics are similar to the parent species. |
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| Keywords: | Grassland science Elymus canadensis Elymus sibiricus Interspecific hybrid Morphology |
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