Abstract
1. By the patterns of H-segments in chromosome A, B, C, D, and E, 8, 4, 3, 2, and 5 types were distinguished, respectively, in 50 plants from Kombumori population, and 11, 3, 2, 2, and 2 types respectively in 50 plants from Okuyukiusu population. Remarkable differences were found between the two populations with respect to the frequencies of different chromosome types of A, B, and E.
2. The number of different karyotypes among 50 plants was 49 in Kombumori and 42 in Okuyukiusu. No prevalence of certain definite karyotypes was found.
3. In both populations and in all five chromosomes, A-E, the observed frequencies of homozygous pairs were in good conformity with the calculated frequencies based on random breeding, revealing no differential viabilities among the different karyotypes.
