Acta Metallurgica Sinica 2004, 26(01) 1-3 DOI:     ISSN: 0412-1961 CN: 21-1139/TG

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Keywords
Allium mairei;Karyotype;Polymorphism;Diploid;Tetraploid;Bchromosome
Authors
CHEN XiaoLan,YU Hong,HUANG RuiFu,DENG XinYan
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Studies on Morphological and Chromosome Polymorphism of Allium mairei in Kunming Area

CHEN XiaoLan,YU Hong,HUANG RuiFu,DENG XinYan

Biotechnology Department,College of Life Science,Yunnan University,Kunming 650091,China

Abstract

The morphological and karyotipical variations of 8 local populations of Allium mairei Lévl.in Kunming area had been studied in this paper.The results showed that morphological characters of Amairei have abundant polymorphism in populations and obvious polytypism among populations,and the karyotype of Amairei is rather symmetry in SectRhiziridium.Diploid and Tetraploid populations were found in Amairei.The karyotypical formulae of diploid is 2n=2x=14m+2sm,and that of tetraploid is 2n=4x=28m+4sm.There is karyotypical polymorphism in Amairei because of the variations of polyploids,Bchromosomes and satellite chromosomes.

Keywords Allium mairei;Karyotype;Polymorphism;Diploid;Tetraploid;Bchromosome  
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