Abstract The flower bud differentiation process of Xinjiang Artemisia dracunculus L. lasted for about one month from
late May to July.The process could be divided into three phases.They are floral axis differentiation
phase,inflorescence differentiation phase and flower organ differentiation phase.The apical flower bud and laterval
flower bud of tarragon can turn from vegetative cone and half flourish is imperfect flower and tublar floret is
perfect flower.
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