Kozak M.F.

The circadian mitotic rhythms in representatives of soybean Glycine L.

Cytology and Genetics 2004, v 38, number 6, 7-12

The circadian mitotic rhythms in representatives of soybean Glycine max (L.) Merr., G. soja Sieb. & Zucc., as well as in homozygote forms of tibia F₆ hybrids were studied. We observed three "waves" of the mitotic activity in the cells of apical root meristem with the initial moment of the perfect rest at 24 o’clock; and the legible periods which decreased later on. Beginning from 1 o’clock to 6 o’clock the first maximum mitotic "wave" increased; the second one evolved up to 12 o’clock, the third less legible one arised at 18-21 o’clock. Each of soybean tested forms was distinguished by the peculiarity in periodical processes and the values of mitotic indexes