Karyotype of Paeonia obovata Maxim. from Mt. Huangshan and Mt. Jiuhuashan

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Karyotype of Paeonia obovata Maxim. from Mt. Huangshan and Mt. Jiuhuashan

Zhang Ding-Cheng

(Department of Biology, Anhui Normal University, Wuhu)

Received:1900-01-01 Revised:1900-01-01 Online:1989-11-10 Published:1989-11-10
Contact: Zhang Ding-Cheng

Abstract

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.

Key words: Paeonia obovata, Karyotype, Huangsham, Jiuhuashan.

Zhang Ding-Cheng. Karyotype of Paeonia obovata Maxim. from Mt. Huangshan and Mt. Jiuhuashan[J]. .

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Karyotype of Paeonia obovata Maxim. from Mt. Huangshan and Mt. Jiuhuashan

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