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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (19): 234-238.

• 林学 园艺 园林 • 上一篇    下一篇

4种大花蕙兰与国兰杂交F1代核型分析

王丰妍 王长宪 李承秀 张东旭 潘银萍 王郑浩   

  • 收稿日期:2010-04-14 修回日期:2010-05-12 出版日期:2010-10-05 发布日期:2010-10-05

Study on Karyotype Analysis of Four Species of Hybrid F1 Generation between Cymbidium hybridiumand Chinese Cymbidium

  • Received:2010-04-14 Revised:2010-05-12 Online:2010-10-05 Published:2010-10-05

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摘要：

：首次报道4种大花蕙兰与国兰杂交后代染色体形态与核型。结果如下：绿宝石×春剑（Cym. Lovely Valley‘Evergreen’×Cym. Longibracteatum）后代2n=3x=45m+15sm，核不对称系数为59.75℅,2B型；天使×蕙兰（Cym. KLR565×Cym. sinense）后代2n=3x=42m+18sm，核不对称系数为59.33℅,2B型；夏绿×春剑（Cym. Summer Queen×Cym. Longibracteatum）后代2n=2x=30m+10sm，核不对称系数为58.58℅,2B型；圣蕾芬×春剑（Cym. Saint Raphin×Cym. Longibracteatum）后代2n=2x=34m+6sm，核不对称系数为57.15℅,2B型；结合兰属植物若干稳定特化的形态学特征,讨论了兰属植物的核型进化。

关键词: 关 键 词：莆田枇杷产业链, 关 键 词：莆田枇杷产业链, 经验, 福建药用果树产业链, 启示

Abstract:

Abstract: Four Species of Hybrid F1 Generation between Cymbidium hybridiumand Chinese Cymbidiumare karyologically analyzed.Their karyotype formula and index of karyotypic asymmetry (As.k)are presented as follows:Cym.Lovely Valley‘Evergreen’×Cym. Longibracteatum,2n=3x=45m+15sm,As.k=59.75%;Cym.KLR565×Cym.sinense,2n=3x=42m+18sm，As.k=59.33℅;Cym.Summer Queen×Cym. Longibracteatum 2n=2x=30m+10sm,As.k=58.58℅;Cym. Saint Raphin×Cym. Longibracteatum 2n=2x=34m+6sm,As.k=57.15℅.According to Stebbins classification of karyotypic asymmetry,all of the karyotypes belong to“2B”. Moreover, with some stably specialized traits in morphology, the evolution of karyotypes in Cymbidium were also discussed.