Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (2): 106-111.DOI: 10.11733/j.issn.1007-0435.2006.02.002

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A Comparison Among Several Buchloe Dactyloides Breeding Materials in Sexual Reproductivity and Lawny Trait

HU Xiao-yan1, LI Min2, YANG Qing-chuan2, HU Tian-ming 1   

  1. 1. College of Resources and Environment, Northwest Sci-Tec University of Agriculture and Forestry, Yangling, Shaanxi Province 712100, China;
    2. Institute of Animal Science, Chinese Academy of Agriculture Sciences, Beijing 100094, China
  • Received:2005-09-15 Revised:2005-11-21 Online:2006-05-15 Published:2006-05-15

野牛草育种材料有性繁殖及坪用特性

胡晓艳1, 李敏2, 杨青川2, 呼天明1   

  1. 1. 西北农林科技大学资源环境学院, 陕西, 杨凌, 712100;
    2. 中国农业科学院畜牧研究所, 北京, 100094
  • 作者简介:胡晓艳(1977- ),女,北京平谷人,博士研究生,主要研究方向为草坪草、牧草品种选育及相关生物技术
  • 基金资助:
    863项目(2001AA2440512004BA528B01)

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Abstract: To select new species of Buchloe dactyloides that boast high value in seed yield,sod production,and cross breeding,we compared ten grass breeding materials and three hybrid species of B.dactyloides of different characteristics.Testing indexes included the different materials' reproduction phenophases,appearances of vegetative and flowering organs,pollen quality of male plants,seed yield of female plants,sex differentiation ratio of F1 generation,turf quality,and stolon spreading rate.Results indicate that female NO.1 excels in quality and high seed yield,and is fitted to be the maternal material for a new B.dactyloides species.Male NO.1 issues a large quantity of quality pollen,and is suitable to be the paternal material for the crossbreeding.Females NO.3,NO.5,and NO.6,and the polygamy material are all fitted to be new varieties for vegetative propagation and turf blankets.The three hybrid species are similar in heterosis,though not in sex differentiation ratio.

Key words: Buchloe dactyloides(Nutt.) Engelm, Breeding materials, Sexual reproduction, Lawny trait

摘要： 研究10份野牛草(Buchloe dactyloides)育种材料及其3个F 1代杂交种的物候期、营养器官及花器官形态、雄株花粉质量、雌株种子产量、F1代性别分化比例、草坪质量、匍匐茎扩展速率等有性繁殖及坪用特性指标。结果表明:1号雌株种子质量好,产量较高,可作为选育种子生产的母本材料;1号雄株花粉数量多,质量好,可以作为杂交育种的父本材料;3号、5号、6号雌株及雌雄同株的坪用性状突出,可作为无性繁殖和生产草皮卷的新种质;3个F1代杂交种的杂种优势均较明显,但性别分化比例有所不同。

关键词: 野牛草, 育种材料, 有性繁殖, 坪用特性

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