A Report on Chromosome Numbers of Chinese Umbelliferae

Chin Hui-Chen, Pan Ze-Hui, Sheh Meng-Lan, Wu Chu-Jun

Received:1900-01-01 Revised:1900-01-01 Online:1989-07-10 Published:1989-07-10
Contact: Chin Hui-Chen

Abstract:

This is the third report of chromosome numbers of Umbelliferae after 1981 and

1985, which deals with 24 species and varieties of 15 genera including 2 endemic genera and

10 endemic species, and most of them are distributed in southwestern China. Of them, 18

counts are newly reported. The taxonomic significance is discussed in relation with their

basic numbers, translocation heterozygote and polyploids. It is considered that polyploids are

wide-spread in Hydrocotyle L. 4, 6, 7, 8 are the basic numbers of Bupleurum L. which pro-

vides the cytological evidence for further study on their evolutionary process. n=9 and 10

occurrespectively in two different sections of Pimpinella L. and their basic numbers may be

used for classification at the section level. The ring formation of four chromosomes at dia-

kinesis of Heracleum henryi Wolff reveals that translocation heterozygotes is one of the factors

in specific differentiation of Umbelliferae.

Key words: Umbelliferae, Chromosome numbers

Chin Hui-Chen, Pan Ze-Hui, Sheh Meng-Lan, Wu Chu-Jun. A Report on Chromosome Numbers of Chinese Umbelliferae[J]. .

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[11]	Pan Ze-Hui, Chin Hui-Chen, Wu Zhu-Jun, Yuan Chang-Qi, Liou Shou-Lu. A Report on the Chromosome Numbers of Chinese Umbelliferae [J]. , 1985, 23(2): 97-102.

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