karyotypic Analysis Based on Heterochromatin Distribution in Allium fistulosum and Allium ascalonicum

Allium fistulosum과 Allium ascalonicum에서 헤테로크로마틴 분포에 의한 핵형분석

The present study demonstrates karyotype based on H-patterns of A.fistulosum and A. ascalonicum using Giemsa technique. The results obtained in this study are summarized as follows: I). Karyotypic analysis of A. fistulosum is 6VII＋$JII^t＋JII$ and that of A. ascalonicum collected from a local farm in the suberbs of Taegu city clearly heterozygous as $13V＋J_1^t＋J_2＋i. ii$). The heterochromatin of both species is generally located distally in both arms of chromosomes and each chromosome type possesses some variations on H-patterns. iii). The percentage of heterochromatin to total chromosome length in cell is about 14.6% in A. fistulosum, 12.8% in A. ascalonicum. The number of bands is revealed about 38 in A. fistulosum and 33 in A. ascalonicum. Also in the amounts of chromocenters per nucleus, the former is somewhat more than the latter.