コデマリの芽の形成に関する形態学的研究

概要

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Bud structure and process of bud formation of Spiraea cantoniensis Lour.'Mizuho' were investigated. 1. All of axillary buds onthe distal hafl part of current shoot were flower buds. Buds on the basal hafl part were undeveloped dormant buds with exceptionof some axillary buds that developed into vegetative buds just below the flower bud region. 2. The vegetative buds were composed of two prophylls, about 28 scales, six inner bracts(transition leaf)and about 28 leaf primordia. The dormant buds were composed of two prophylls and about 28 scales, since they did not initiated any inner bractsnor leaf primordia. The flower buds were composed of two prophylls, about 13-24 scales, six inner bracts, seven to ten leaf primordia and an inflorescence. The number of scales of flower bud decreased with increasing node positionacropetally. The inflorescences were composed of 20-30 florets. 3. Axillary buds of current shoot began to initiate acropetally in early April. Undeveloped(dormant)buds stopped to form scales in November, and developed vegetative buds and flower buds were in mature stage in March. 4. The Process of flower formation agreed with previous repots.
香川大学の論文
1992-10-31