作 者 ：Zhang Ding-Cheng
期 刊 ：植物分类学报 1989年 6期
Keywords:Paeonia obovata, Karyotype, Huangsham, Jiuhuashan.,
Abstract:
The present paper describes the karyotype of two populations of Paeonia obovata
Maxim. from Mt. Huangshan and Mt. Jiuhuashan. The somatic chromosomes of both groups
are the same: K(2n)=2x=10=6m+2sm+2st, without sat-chromosomes. The ratio of the lar-
gest to the smallest chromosomes is 1.47. The proportion of the chromosomes with the arm
ratios more than 2 is 0.2. Therefore, the karyotypes of both populations belong to 2A type
of Stebbins.
These descriptions prove that chromosome number and karyotype of different populations
of Paeonia obovata Maxim. are stable. The chromosome number is identical with that reported
on the species.