Abstract: ‘Zoumayang taro’ (purple petiole, white bud) , ‘Jianghan taro’ ( green petiole, whitebud) and‘Red-petiole taro’ (purple-red petiole, pale red bud) were selected for observation and comparison of growing development among these three types of taro 〔Colocasia esculenta (L. ) Schott〕with multicormels. It indicated thatmaturity of‘Jianghan taro’was the ealiest, ‘Zoumaoyang taro’was the next earliest, and ‘Red-petiole taro’was the latest. The later the maturity was, the faster the leaf grew. Earliness or lateness of tiller appearing was an indicator of that of the first grade cormel formation. Numbers of tillers, which reflected the tillering charactor of different types of cultivars, had no positive correlation with numbers of the first grade cormels and total cormels. The source-sink relationship of drymatter accumulation exists among
corm, the first grade cormels and the second cormels.

Key words: Colocasia esculenta (L. ) Schott, Taro with multi-cormels, Growing development