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甜樱桃品种大紫6月15日以前花芽尚未分化。未分化的芽,其生长锥呈锥状突起,原套和原体细胞尚未发生变化。到6月20日前后,多数花芽开始了花原基及苞片原基的分化。7月20日前后,花原基伸长,萼片原基分化.7月30日前后,花冠原基分化。8月20日前后,雄蕊原基分化。8月30日前后,心皮原基分化,并向上突起。苞片、花萼、花冠、雄蕊和心皮等原基均由表皮下的原套细胞分化而来。到9月10日左右,雌蕊形成。
Sweet cherry varieties purple before June 15 flower buds have not yet been differentiated. Undifferentiated buds, the growth cone conical protuberance, the original kit and the original cell has not changed. By June 20, most flower buds began to differentiate into primordia and bracts primordia. Around July 20, the flower primordium elongation, sepals primordium differentiation around July 30, corolla primordium differentiation. Before and after August 20, stamens primordium differentiation. Before and after August 30, the carpels primordial differentiation, and uplift. Bracts, calyx, corolla, stamens and carpels and other primordia by the original epidermal cells under the differentiation from. By September 10 or so, pistil formation.