1988 年 53 巻 2 号 p. 307-321
Intraspecific variation of the karyotype of L. sanguinea var. kiushiana and L. sanguinea var. koreana was studied. Almost all plants of both taxa examined were diploid having 2n=22, but three triploid bulbs (2n=33) and one tetraploid bulb (2n=44) were found in L. s. var. kiushiana from the Taradake population. The absolute arm length, relative length, and r value of each chromosome of the representative karyotype of these taxa have been summarized in Tables. The standard karyotype of diploid plants consists of twenty-two A type chromosomes of which two are satellite chromosomes.
Though the frequency is low, various intraspecific and intercellular chromosome rearrangements were observed in the diploid. They are as follows: 1. Some subtelocentric chromosomes and T' type chromosomes were observed. They must have originated from the standard A type chromsomes by means of deficiency or pericentric inversion. 2. The m type chromosome was found in some cells of L. s. var. koreana. It must have originated from the A by means of a break at the proximal region of the long arm. 3. A few instances of heterozygous combination of satellite chromosomes were observed.
