The Karyotype of Petunia hybrida and the Differential Chromosome Condensation

Abstract

1. The karyotype of Petunia hybrida was re-investigated and was determined as follows. K(2n)=14=2_csA^sm₁(n) +2A^m₂+2B^st+2C^m₁+2C^sm₂+2D^sm₁+2D^m₂.
2. The present study has revealed the differential chromosome condensation to take place from late prophase to metaphase in somatic mitosis. And the differential chromosome condensation probably has its relationship to heterochromatin.