草地学报

›› 2004, Vol. 12 ›› Issue (4): 294-297.DOI: 10.11733/j.issn.1007-0435.2004.04.009

• 研究论文 • 上一篇    下一篇

加拿大披碱草与老芒麦及其杂种的生长规律和形态特性

王树彦1, 云锦凤2, 徐军2, 杨洪琴3   

  1. 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
  • 收稿日期:2004-05-17 修回日期:2004-09-12 出版日期:2004-11-15 发布日期:2004-11-15
  • 作者简介:王树彦(1971- ),女,内蒙古巴盟人,博士,讲师,主要从事植物遗传育种研究
  • 基金资助:
    国家自然科学基金(39970536)

Growth and Morphology Characters of Elymus canadensis, Elymus sibiricus and Their Hybrid

WANG Shu-yan1, YUN Jin-feng2, XU Jun2, YANG Hong-qin3   

  1. 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
  • Received:2004-05-17 Revised:2004-09-12 Online:2004-11-15 Published:2004-11-15

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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.

关键词: 草原学, 加拿大披碱草, 老芒麦, 种间杂种, 形态学

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 F1, 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.

Key words: Grassland science, Elymus canadensis, Elymus sibiricus, Interspecific hybrid, Morphology

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