对黑莓品种Boysen和Kiowa果实发育特点及果实糖酸累积量进行了研究.结果表明:黑莓果实的发育分为迅速生长期、生长停滞期和成熟期3个阶段.迅速生长期占果实发育时间的15％ ～20％,果实迅速膨大,平均果径增长较快,糖酸缓慢累积,糖酸比变化较小或有所升高；生长停滞期占果实发育时间的50％～60％,果重和平均果径增长缓慢,还原糖和总糖累积速率降低,可滴定酸累积速率迅速上升,糖酸比降低,Kiowa果实可滴定酸的累积主要在这个阶段；成熟期占果实发育时间的20％～30％,果重增长迅速,还原糖和总糖累积速率迅速上升,是果实糖累积的重要阶段,可滴定酸累积速率也迅速升高,糖酸比升高,Boysen果实可滴定酸的累积主要在这个阶段.%The characters of fruit development of two cultivated blackberry cultivars Boysen and Kiowa were investigated. The results showed that blackberry fruit development was divided into the three stages of rapid growth stage, stationary growth stage and mature growth stage. Rapid growth stage occupied 15%-20% development duration, during which fruit average diameter increased quickly, sugar and acid accumulated slowly, sugar acid ratio stagnated or increased; Stationary growth stage occupied 50%-60% development duration, during which fruit weight and average diameter increased slowly, the accumulation rate of reducing and total sugar decreased, and that of titratable acid increased quickly, sugar acid ratio decreased, the titratable acid accumulation of Kiowa fruit was mainly in this stage. Ma ture growth stage occupied 20%-30% development duration, during which fruit weight and the accumu lation rate of reducing and total sugar acid increased quickly and sugar acid ratio increased quickly. Mature growth stage is the main stage of sugar accumulation in fruit, and it is also the main titratable acid accumulation stage of Boysen fruit.
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