【摘要】 利用扫描电镜技术对金银忍冬〔Lonicera maackii(Rupr.)Maxim〕的花器官发生与发育过程进行了研究。研究发现,3月中旬侧生营养茎端由1个突起转化为两个突起,随后两个营养茎端同时转化为两个并生的生殖茎端,即花原基。花器官为轮状结构,向心发生。萼片、花冠和雄蕊的发生式样均为五基数类型,它们各来源于花原基上分化出来的花萼原基,花冠原基和雄蕊原基。心皮1枚,发育为柱头、花柱和子房。金银忍冬花芽发生与发育的速度快,花芽分化期需大量营养。花器官发生过程中,两并生花的发生发育进程具同步性。更多还原

【Abstract】 We studied floral organogenesis and development of Lonicera maackii(Rupr.)Maxim by using scanning electron microscope(SEM)technique.We found that the lateral vegetative apexes transformed from one protrusion into two protrusions in mid-March,and then the two vegetative apexes simultaneously transformed into two collateral reproductive apexes,i.e.floral primordia.The floral phyllotaxis was whorled and centripetal.Calyx,corolla,and androecium were all pentamerous,developing from calyx,corolla and androecium primordial,respectively.The single carpellary primordium developed into stigma,style,and ovary.The floral organogenesis and development of L.maackii were rapid and nutrition-demanding.During floral organogenesis and development,the two collateral flowers were synchronous.更多还原