Chen Jian-She, Gao Qi, Zhou Hao, Huang Yu-Song, Ogisu Mikinori, Cao Ming
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China.
1-30-43 Kamitakaido, Suginami-Ku, Tokyo 1680074, Japan.
Comp Cytogenet. 2017 Jan 9;11(1):1-13. doi: 10.3897/CompCytogen.v11i1.9803. eCollection 2017.
Y. Wan & C.C. Huang, 1987 is considered for the first time as a widespread polyploidy complex in the genus Ker Gawler, 1823 from limestone areas of Asia. The chromosome number of the tetraploid is 2n = 76 and the karyotype is formulated as 2n = 44 m + 8 sm + 24 st, while the chromosome number of the diploid is 2n = 38 and the karyotype formula 2n = 22 m + 4 sm + 12 st. In our studies, diploids occupy broader geographical and environmental niche spaces than tetraploids. Although the leaf-shape of varies quantitatively between and within diploid and/or tetraploid population(s), no obvious discontinuity in the width of leaf has been observed. The tetraploid plants may be distinguished from the diploid plants by their rigid petioles as well as thick deep green lamina. is therefore an interesting material to explore the formation and the evolutionary dynamics of a natural polyploid complex from limestone areas of the tropical regions.
Y. Wan和C.C. Huang在1987年首次将其视为1823年Ker Gawler属中来自亚洲石灰岩地区的广泛多倍体复合体。四倍体的染色体数为2n = 76，核型公式为2n = 44m + 8sm + 24st，而二倍体的染色体数为2n = 38，核型公式为2n = 22m + 4sm + 12st。在我们的研究中，二倍体比四倍体占据更广阔的地理和环境生态位空间。虽然二倍体和/或四倍体种群内部和之间的叶形在数量上有所不同，但在叶宽上未观察到明显的间断。四倍体植物可以通过其坚硬的叶柄以及厚实的深绿色叶片与二倍体植物区分开来。因此，它是探索热带地区石灰岩地区天然多倍体复合体的形成和进化动态的有趣材料。
