Chromosome Studies of Subgenus Gymnaconitum Endemic to China and Beesia (Ranunculaceae)

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Chromosome Studies of Subgenus Gymnaconitum Endemic to China and Beesia (Ranunculaceae)

Shang Xiao-Min

(Beijing Agriculture University, Beijing)

Received:1900-01-01 Revised:1900-01-01 Online:1985-08-18 Published:1985-08-18
Contact: Shang Xiao-Min

Abstract

Abstract:

The paper reports chromosomal number and chromosomal morphologies of

annual Aconitum gymnandrum endemic to China and Beesia calthifolia for the first

time. Of the two spcies, chromosome number is same (X=8, 2n=16) and chromosome

average lengths are 6.17μ , 10.73μ respectively. The longest chromosome 1, the short

chromosomes 3-5, 7 and the shortest chromosome 8 are metacentrical (m), the chro-

mosomes 2, 6 are submetacentrical (sm), and the pairs 4, 5, 8 have satellites in the

karyotype of A. gymnandrum. In B. calthifolia, all of the chromosome 1-5 are the

long m, the chromosomes 6, 8 are the short sm and the 7 is telocentrical (t). The pairs

3, 4, 6 have satellites.

According to the comparison of karyotypes of three subgenera—subgen. Para-

conitum, subgen. Aconitum and subgen. Gymnaconitum in Aconitum, the evolution trend

of chromosomes is further discussed.

Finally, the relationship between Aconitum and Beesia is also discussed in this

paper.

Key words: Aconitum, A.gymnandrum, Beesia, B.colthifolia, Chromosome, Karyotype

Shang Xiao-Min. Chromosome Studies of Subgenus Gymnaconitum Endemic to China and Beesia (Ranunculaceae)[J]. .

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Chromosome Studies of Subgenus Gymnaconitum Endemic to China and Beesia (Ranunculaceae)

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