摘要
本文首次对鸭跖草科孔药花属Porandra Hong进行染色体研究。孔药花P.ramosa Hong和攀缘孔药花P.scandens Hong在染色体的大小、数目和形态上都十分相似,核型公式为2n=36=4m+26sm+6st(2sat),核型类型属于3B。染色体证据支持孔药花属与穿鞘花属Amischotolype和Coleotrype属相近的观点。
In this paper, the chromosome number and karyotype of the small genus, Po-randra Hong (Commelinaceae) , are reported for the first time. The two species, P. ramosa Hong and P. scandens Hong, were found to have the same chromosome number 2n = 36 and quite similar karyotypes, which could be formulated as 2n= 36 = 4m + 26sm+6st (2sat). Having the same original basic chromosome number x = 9 and very similar chromosome morphology, Porandra might be closely related to Amischotolype and Coleotrype, as indicated also by their similar gross - morphological characters.
出处
《植物分类学报》
CSCD
1994年第3期232-234,共3页
Acta Phytotaxonomica Sinica
