The process which suppresses the function of the transcription factor which participates in the morphogenesis of the flower organ of the cyclamen is included at least, production manner of the garrulous blooming cyclamen plant body where the number of petals augments.シクラメンの花器官の形態形成に関与する転写因子の機能を抑制する工程を少なくとも含む、花弁数が増加した多弁咲きシクラメン植物体の生産方法。