A Comparative Karyotypic Study of Three Species in Fritillaria

A Comparative Karyotypic Study of Three Species in Fritillaria

Xu Jin-Lin, Li Yu-Zhao, Zhang Lin-Wei, Wang Li-An, Yang Guang-Rui

Received:1900-01-01 Revised:1900-01-01 Online:1987-02-18 Published:1987-02-18
Contact: Xu Jin-Lin

Abstract

Abstract:

The present paper deals with a comparative karyotypic study of three species in Fri-

tillaria-F. thuncergii Miq., F. anhuiensis S. . Chen et S. F. Yin and F. hupehensis Hsiao et

K. C. Hsia. The karyotype of F. anhuiensis S. C. Chen et S. F. Yin is first reported.

The karyotypes of the three species of Fritillaria are rather similar, all with K(2n)=24=

2m+2sm+12t+4st+4m (SAT), showing a close interspecific relationship. They all have two

pairs of st chromosomes, one of which is the third chromosome in all the three species studied,

but the other is the seventh in F. thunbergii Miq, the eighth in F. anhuiensis S. C. Chen et S. F.

Yin, and the fifth in F. hupehensis Hsiao et K. C. Hsia. It tells us that there are some differences

in their karyotypes. All of the three species possess two pairs of satellite chromosomes with the

satellites located on the long arms. A heterochromatic zone is found sometimes on long arms of No.

IX chromosome in each species of Fritillaria and on one of No. I chromosomes in both F. thun-

bergii Miq. and F. anhuiensis S. C. Chen et S. F. Yin, a chromosome polymorphism occurring

between populations of Fritillaria. In addition, three B chromosomes are always found in most

root-tip cells of F. hupehensis Hsiao et K. C. Hsiao.

Key words: Fritillaria, F.thunbergii Miq, F.anhuiensis S.C.Chen et S.F.Yin, F.hupehensis Hsiao et K.C.Hsia, Karyotype, B chromosome.

Xu Jin-Lin, Li Yu-Zhao, Zhang Lin-Wei, Wang Li-An, Yang Guang-Rui. A Comparative Karyotypic Study of Three Species in Fritillaria[J]. .

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A Comparative Karyotypic Study of Three Species in Fritillaria

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