作 者 ：YANG Qin-Er
期 刊 ：植物分类学报 1998年 6期
Keywords:Actaea asiatica,
Abstract:
Actaea asiatica was previously reported to have the most symmetric and primitive
karyotype, consisting of 10 m- and 6 sm-chromosomes, which is quite different from those of
the remaining species in the genus Actaea, consisting of 10 m-, 4 sm- and two T-chromo
somes. In this paper, the chromosomes of this species were re-examined. The results show
that Actaea asiatica has the same karyotype as the other species in the genus. Compared
with the species in other genera in the tribe Cimicifugeae, i.e. Beesia, Anemonopsis,
Souliea and Cimicifuga, Actaea asiatica, together with the remaining species of the
genus, has the most asymmetric and thus probably the most advanced karyotype in this tribe
because of the presence of two T- chromosomes in their chromosome complements. The two
T- chromosomes may serve as one of the most important cytological markers, by which the
species in Actaea are clearly distinguishable cytologically from those in Beesia, Anemonop-
sis, Souliea and Cimicifuga.