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中国农学通报 ›› 2019, Vol. 35 ›› Issue (10): 72-75.doi: 10.11924/j.issn.1000-6850.casb18100122

• 林学 园艺 园林 • 上一篇    下一篇

菵草属、看麦娘属和梯牧草属部分植物颖果微形态研究

许崇梅1,2, 鞠辉军1, 李法曾2   

  1. 1.潍坊医学院 药学院;2.山东师范大学 生命科学院
  • 收稿日期:2018-10-31 修回日期:2018-11-30 接受日期:2018-12-04 出版日期:2019-04-03 发布日期:2019-04-03
  • 通讯作者: 许崇梅
  • 基金资助:
    山东省自然科学基金资助项目“中国羊茅属植物的系统学研究”(ZR2017LC002)。

The Caryopsis of Beckmannia, Alopecurus and Phleum in China: Micromorphology

  • Received:2018-10-31 Revised:2018-11-30 Accepted:2018-12-04 Online:2019-04-03 Published:2019-04-03

摘要: 菵草属、看麦娘属和梯牧草属都属于禾本科早熟禾亚科,对中国产菵草属、看麦娘属和梯牧草属共 6 种植物的颖果微形态特征进行研究,以明确颖果微形态对于3个属的分类学意义。[方法]颖果在离子溅射仪中真空喷金后,在扫描电镜下观察和研究6 种植物的颖果微形态特征。[结果]结果显示:(1) 看麦娘、菵草属和梯牧草属颖果微形态特征为体长1mm到2mm左右,颖果形状为卵圆形或梭形,背腹压扁或不明显,腹面凸起或凹起,种脐形状为圆形或披针形延伸到线状,颖果纹饰是条状或网状。(2) 应用PAUP软件进行了3个属颖果性状的UPGMA聚类分析,在分支树上,菵草属和看麦娘属列为一个分支,梯牧草属单列另一支,[结论]颖果微形态的研究说明菵草属和看麦娘属有更近的亲缘关系。

关键词: 人体舒适度, 人体舒适度, 江南地区, 时间变化, 空间分布

Abstract: Beckmannia, Alopecurus and Phleum are common and widespread genera of Poaceae subfamily Pooideae. The morphological characteristics of caryopsis of 6 species from Beckmannia, Alopecurus and Phleum including in China were observed by using scanning electron microscopy after being coated with gold in a sputter coater in order to infer the taxonomic significance of caryopsis micro- morphological characteristics. The results showed that: (1) the caryopsis micromorphological features of Beckmannia, Alopecurus and Phleum were 1-2 mm long, fusiform or oval shape, compressed dorsal abdomen or not, concave or convex abdomen, round or lanceolate to linear hilium shape, reticular or strip ornamentation; (2) the caryopsis characters were analyzed by PAUP using UPGMA methods; in the tree, Beckmannia and Alopecurus clustered together, Phleum formed another branch. The caryopsis micromorphological evidences suggest that Beckmannia and Alopecurus have a closer relationship.