Partial synchrony in soybean cell suspension cultures induced by ethylene

Partial synchrony of cell division in continuous cultures of soybean cell suspensions was obtained by flushing the cultures with ethylene at intervals of 36 h. The most pronounced synchrony resulted from flushing the suspensions with 3% ethylene for 3 h, followed immediately by 3% CO₂ for 3 h and 30 h aeration prior to the next ethylene treatment. Soybean cells responded to this regime of gassing also with a significant enhancement of growth.