菊科菊苣族3属5种植物的核型报道  

Karyotypes of Five Species of Compositae

作　　者：关莉[1] 陆阳[1] 刘璐[1] 朱世新[1] 

机构地区：[1]郑州大学生命科学学院,郑州450001

出　　处：《西北植物学报》2014年第9期1771-1775,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(31000097)

摘　　要：采用常规压片法研究了菊科(Compositae)假福王草属(Paraprenanthes Chang ex Shih)、翅果菊属(PterocypselaShih)和紫菊属(Notoseris Shih)3属5种植物的染色体数目及核型,其中林生假福王草(Paraprenanthes diversifolia)的核型为首次报道。结果表明,该5种植物的染色体数目均为2n=18,核型结果分别为林生假福王草2n=8m+10sm(2SAT);翅果菊(Pterocypsela indica)2n=4m+10sm+4st;光苞紫菊(Notoseris macilenta)2n=10m+8sm(2SC);三花紫菊(Notoseris triflora)2n=10m(2SAT)+8sm;南川紫菊(Notoseris porphyrolepis)2n=12m(2SC)+6sm;林生假福王草和紫菊属4个种的核型为"2A"型,翅果菊的核型为"3A"型。The chromosome numbers and karyotypes of five species from genera Paraprenanthes Chang ex Shih,Pterocypsela Shih and Notoseris Shih（Compositae-Cichorium） were investigated with the conventional pressing plate method.The results show that their chromosome numbers all are 2n=18 and karyotype of Paraprenanthes diversifolia is reported for the first time.The karyotype formulas are expressed as 2n=8m＋ 10sm（2SAT） for P.diversifolia,2n=4m＋ 10sm＋ 4st for Pterocypsela indica,2n=10m＋ 8sm（2SC） for Notoseris macilenta,2n=10m（2SAT） ＋8sm for N.triflora,2n=12m（2SAT） ＋6sm for N.porphyrolepis.Paraprenanthes and Notoseris belong to Stebbins ＂2A＂ type and Pterocypsela belongs to Stebbins ＂3A＂ type.

关 键 词：林生假福王草 假福王草属 翅果菊属 紫菊属 核型分析 

分 类 号：Q343.22[生物学—遗传学]