On the other hand, many good images of the pro-metaphase
chromosomes were obtained in the somatic cells stained with
the DAPI solution (Fig. 2B and D). The average length of
chromosomes at the pro-metaphase stage was considerably
greater, actually 3–4 times greater, than that of chromosomes
in the metaphase stage in diploid and octoploid strawberry
plants (Table 1). Moreover, the pro-metaphase chromosomes
had more readily distinguishable shapes than the metaphase
chromosomes in the octoploid plants.