邦産キク亜科植物の細胞学的研究 VIII
サワギク族の核型分析
1962 年 75 巻 892 号 p. 401-410
詳細
1962 年 75 巻 892 号 p. 401-410
1. The somatic chromosome numbers and the karyotypes were studied in nine species and subspecies belonging to subfamily Carduoideae.
2. The numbers of somatic chromosomes were counted in five species of Senecio, two species of Ligularia and two species of Farfugium for the first time.
3. All the members of Senecio studied have, in general, symmetrical karyotypes suggesting to be phylogenically primitive. Senecio cannabifolius has a characteristic symmetrical karyotype which resulted from high polyploidization of the basic number of 5 or 10.
4. On the basis of the karyological data obtained, the taxonomic positions of Farfugium japonicum and F. hiberniflorum were considered.
5. Ligularia and Farfugium species have the same chromosome number of 2n=60, but are karyologically different. And Farfugium species has a karyotype more asymmetrical than that of Ligularia.
