Abstract
The conditions required for in vitro culture of coconut zygotic embryos were studied in order to produce plantlets with well-developed root systems. Trimming of the primary roots developed from embryos stimulated the formation of adventitious roots. When the root-trimmed plantlets were recultured under an illumination of 13, 000 1x, numerous adventitious roots were formed. Through a series of cultures under specified conditions, in vitro plantlets with well-balanced shoot and root systems were obtained consistently from zygotic embryos, resulting in successful acclimatization to natural growing conditions and establishment in soil.
