四川农业大学学报 ›› 2003, Vol. 21 ›› Issue (03): 196-200.doi: 10.16036/j.issn.1000-2650.2003.03.003

• 研究论文 • 上一篇    下一篇

赖草属11个物种的形态学特征比较研究

杨瑞武, 周永红, 郑有良, 丁春邦   

  1. 四川农业大学 小麦研究所, 四川 都江堰 611830
  • 收稿日期:2002-12-19 出版日期:2003-09-30 发布日期:2017-03-07
  • 基金资助:
    四川省教育厅项目;四川省科技厅科研项目。

Comparative Study on Morphological Characters among 11 Species in Leymus Hochst

YANG Rui-wu, ZHOU Yong-hong, ZHENG You-liang, DING Chun-bang   

  1. Triticeae Research Institute, Sichuan Agricultural University, Dujiangyan 611830, Sichuan, China
  • Received:2002-12-19 Online:2003-09-30 Published:2017-03-07

摘要: 比较了小麦族赖草属11个物种的形态特征差异。结果表明,赖草属植物在进化过程中适应不同的生活环境造成了该属植物丰富的形态学特性。大赖草、宽穗赖草、沙生赖草和天山赖草应归于Sect. Leymus Hochst.;羊草和单小穗赖草属于Sect. Anisopyrum(Griseb.)Tzvel.;赖草、多枝赖草、毛穗赖草、窄颖赖草和卡瑞赖草应归于Sect. Aphanoneuron(Nevski)Tzvel.。通过外部形态演化,分析了赖草属3个组的系统发育水平。

关键词: 赖草属, 形态特征, 进化

Abstract: 11 species of Leymus Hochst. were used to compare their differences in morphological characters. The results are as follows: because of evolution and environmental variation, there exists distinct morphological variation in Leymus. L. racemosus, L. ovatus, L. arenarius and L. tianshanicus belong to Sect. Leymus Hochst., while L. chinensis and L. aemulans are included in Sect. Anisopyrum(Griseb.) Tzvel., and L. secalinus, L. multicaulis, L. paboanus, L. angustus and L. karelinii are categorized in Sect. Aphanoneuron(Nevski) Tzvel.. Morphological evidences indicate that the Sect. Leymus is a relatively primitive section, whereas the Sect. Anisopyrum is an advanced section, and the Sect. Aphanoneuron is between them.

Key words: Leymus, morphological character, evolution

中图分类号: 

  • Q949.714.2