广西植物2017，Vol.37Issue(10)：1330-1334,5.DOI:10.11931/guihaia.gxzw201702034
两种羽叶菊属植物(菊科:千里光族)的 细胞学研究及其系统学意义
Cytological study and systematic significance of two species in Nemosenecio ( Compositae: Senecioneae)
摘要
Abstract
Nemosenecio yunnanensis and N. formosanus, chromosomal dates of two species in Nemosenecio, are reported for the first time herein. The results showed that both of these two species have 48 chromosomes, with their karyotypes being 2n=2x=36m+ 10sm+2st, which are somewhat different from that of N. incisifolius previously reported. The chromosomes of the both two species showed a steady gradation from the longest to the shortest in length, with no evidence of bimodality, while the chromosomes size of the former are obviously much bigger than those of the latter. The results confirm that x=24 should be the basic chromosome number in Nemosenecio, and also reveal that the genus Nemosenecio is indeed closely rela-tive to those species with x=24 as the basic chromosome number in Sinosenecio and Tephroseris at geneal level.关键词
染色体基数/菊科/细胞学/核型/羽叶菊属Key words
basic chromosome number/Compositae/cytology/karyotype/Nemosenecio分类
农业科技引用本文复制引用
王龙远,唐明..两种羽叶菊属植物(菊科:千里光族)的 细胞学研究及其系统学意义[J].广西植物,2017,37(10):1330-1334,5.基金项目
国家自然科学基金(31500166)Supported by the National Natural Science Foundation of China(31500166). （31500166）
