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Four local cultivars of  Allium grayi  Regel collected from different habitats in Korea and  Allium nutans  L. originated from USSR were studied for their karyotypes to obtain basic data for breeding. In  Allium grayi  Regel, somatic chromosome number was 32 in Ulleung, Milyang, and Daegu local cultivars and 40 in Jeju local cultivar. They were tetra- and pentaploids whose basic number was n=8. Karyotypes of  Allium grayi  were K(2n)=32=26V+V T +3V t +2J, K(2n)=32=24V+2V T +2V t +4J, K(2n)=32=24V+2V T +5J+ J t  and K(2n)=40=34V+2J+j+J T +2J t  in Ulleung, Milyang, Daegu and Jeju, respectively.  Allium nutans  L., native to USSR, was identified as an autotetraploid having chromosome number of 2n=32. It also has 4 subterminal chromosomes, i.e., metacentric or submetacentric chromosomes and satellite. Karyotype of Allium nutans was K(2n)=32=28V+4J t  with chromosome length of 11.1-5.9μ and short arm/long arm ratio of 1.00 to 0.31.

COMPARATIVE KARYOTYPE ANALYSIS OF ALLIUM GRAYI REGEL COLLECTED IN KOREA AND ALLIUM NUTANS L. COLLECTED FROM USSR.