[Objective] This study was to study the flower bud differentiation process of Gentiana triflora Pall. , and to clarify the flower bud development law and the correlation between flower buds differentiation and external morphology. [Method] The paraffin section method was used to observe the flower bud of Gentiana triflora under microscope. [ Result] The flower bud differentiation process of Gentiana triflora could be divided into six stages:the undifferentiated stage, initial differentiation stage, sepal primordia differentiation stage, petal primordia differentiation stage, stamen primordia differentiation stage and the pistil primordia differentiation stage. The flower bud differentiation started from early May, when the plant had 10 - 11 stem nodes, and completed in early June, lasted about 40 d. The effect of plant height on flower bud differentiation was not significant. [ Conclusion] The study provided theoretical basis for the high-yield cultivation, variety selection and flowering regulation of Gentiana triflora.%[目的]研究三花龙胆花芽分化过程,阐明其花芽发育规律及花芽分化与外部形态的相关关系.[方法]利用石蜡切片法对三花龙胆花芽进行显微观察.[结果]三花龙胆花芽分化过程可分为6个时期,即未分化期、分化初期、萼片原基分化期、花瓣原基分化期、雄蕊原基分化期、雌蕊原基分化期.花芽分化从5月初开始至6月上旬基本完成,历时约40d.其植株发育到10～ 11节时,花芽开始分化,花芽分化与植高关系不大.[结论]该研究为制定三花龙胆丰产栽培措施、品种培育及花期调控等提供了理论依据.
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