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作 者 ：孙根楼 颜济 杨俊良

期 刊 ：云南植物研究 1991年 13卷 01期 页码：1-3

关键词：鹅观草属；本田鹅观草；缘毛鹅观草；染色体组分析；

Keywords:Roegneria,

摘 要 ：本文通过对鹅观草属一个四倍体种本田鹅观草(Roegneria hondai Kitag.)和缘毛鹅观草(Roegneria pendulina Nevski)染色体组分析，研究了它们的亲缘关系。这两个种杂种F1减数分裂构型4.54I＋5.01II(环形)＋6.49II(棒形）+0.19III+0.04IV,缄数分裂过程不正常，未能结实。表明本田鹅观草和缘毛鹅规草染色体组间具有一定程度的差异，存在着生殖隔离，应划为两个不同的生物种。这一结论同形态学分类相一致。

Abstract:The biosystematic relationship between Roegneria hondai Kitag. and R. pen-dulina Nevski in the tribe Triticeae Dum. were studied by means of genome analysis. Fl PMC had a mean configuration of 4.54 I +5.011 (ring) +6.491 (rod) +0.191 +0.04 IT, an irregular chromosome pairing in meiosis and completely no seed set. The dif-ference of genome and reproductive isolation between two species were observed. The evidence obtained from this study supported the morphological point of view that R. hondai and R. penduUna were independant good species.

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