Cytologyof 12 species in Aconitum L. and of 18 species in Delphinium L. of the tribe Delphineae (Ranunculaceae) from China
国产12种乌头属和18种翠雀属植物的细胞学研究

Cytology of 12 species in Aconitum L. and of 18 species in Delphinium L. of the tribe Delphineae (Ranunculaceae) from China have been investigated. Only A. crassiflorum is a tetra- ploid with the chromosome number of 2n = 32, and all the other Aconitum species studied are dip- loids with 2n = 16. In A. piepunense, up to six B-chromosomes were observed. All the Delphinium species are diploids with 2n = 16; their karyotypes are very similar among the species, and are dis- tinctly distinguishable from those of Aconitum species with respect to the chromosome size, chromo- some morphology and karyotype asymmetry. From a cytological view, Delphinium seems to be more advanced than Aconitum, as the karyotypes in Delphinium are more asymmetric than those in Aconi-tum.