The process of vessel element ' s promotion , formation and connection in primary xylem of antirrhinum majus , a model plant , was observed through micropolariscope and bright - field microscope 利用偏光顯微鏡和明場顯微鏡,首次報道了模式植物金魚草幼苗初生維管系統(tǒng)木質(zhì)部導(dǎo)管分子的發(fā)育、形成和連接過程。