Preliminary Observation on Developmental Characteristics of Adventitious Buds of Artemisia frigida Willd.

The developmental characteristics of adventitious buds of Artemisia frigida Willd.were observed.The results show that the adventitious buds of Artemisia frigida Willd.mainly grow on the rhizome and ground branches,whose size,amount and distribution were different;adventitious buds occurred in May to November,budding stage and flowering stage were period of adventitious buds occurring,there were 19 and 25 adventitious buds on the rhizome and 66 and 75 adventitious buds on the ground branches;by the optical stereoscope and canning electron microscope,the adventitious buds had bud scale,young leaves,leaf primordium and growing tip wrapped in it,the surface of buds and leaves had plenty of white silk wool,the buds turned off-white to green during development,finally formed leaf and branch.