Acta Agrestia Sinica

›› 2005, Vol. 13 ›› Issue (3): 175-179.DOI: 10.11733/j.issn.1007-0435.2005.03.001

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Biological Characters of Leymus Chinensis and Leymus Cinereus and Their Hybrid

HOU Jian-hua1, YUN Jin-feng2   

  1. 1. College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010019, China;
    2. College of Ecology and Environment, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010019, China
  • Received:2004-09-28 Revised:2005-04-19 Online:2005-08-15 Published:2005-08-15

羊草、灰色赖草及其杂种F1生物学特性

侯建华1, 云锦凤2   

  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
  • 通讯作者: 云锦凤,E-mail:csgrass@public.hh.nm.cn
  • 作者简介:侯建华(1962- ),女,内蒙古呼和浩特人,教授,博士,主要从事作物及饲草遗传育种研究,E-mail:Houjh68@163.com
  • 基金资助:
    国家自然科学基金(39970536)

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Abstract: The biological characters of Leymus chinensis and Leymus cinereus and their hybrid were studied. The main results showed that in comparison with parents, the hybrid F1 had superiority in growth vigour, leaf (width and)length, spike width and length. The heterosis of the hybrid F1 is evinced by its leaf area, the (ratio of stem)weight and leaf weight and grass yield, and over-high parent heterosis was 50.0%, 27.8% and 20.9% respectively. F1 is inferior to its parents in tillering ability by 5.7%, while its heterosis exhibits in (crude protein), nitrogen free extract, crude ash and Ca element, which exceed those of its parentsby 0.71%, (1.0%,)22.72%, and 10.00%, respectively.

Key words: Leymus chinensis, Leymus cinereus, Hybrid, Biological characters

摘要： 研究羊草(Leymus chinensi)、灰色赖草(Leymus cinereu)及其杂种F1生物学特性。结果表明:与双亲相比,杂种F1具有植株高大、叶片宽厚、叶量丰富、生长旺盛和穗粗大等特点;杂种F1的生产性能,特别是叶面积、茎叶比和鲜草产量具有较强的种间杂种优势,超亲优势率分别为50.0%、27.8%和20.9%;分蘖力具有负向超亲优势,负向超亲优势率为5.7%;杂种F1的粗蛋白质、无氮浸出物、粗灰分和Ca含量等表现出超亲优势,超亲优势率分别是0.71%、1.00%、22.72%和10.00%。

关键词: 羊草, 灰色赖草, 杂交种, 生物学特性

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