龙柚果实总钙、可溶性Ca^(2+)含量及Ca^(2+)-ATPase活性的变化

Changes of Total Calcium, Soluble Ca^(2+) Concentrations and Ca^(2+)-ATPase Activity of Longyou Punnelo

研究以柚类品种龙柚为材料,对发育过程中果皮、果肉总钙和可溶性Ca^(2+)含量及Ca^(2+)-ATPase活性进行了测定.结果表明:龙柚花前至花期子房总钙含量相对较低,花后有明显上升;龙柚果皮总钙和可溶性Ca^(2+)均在果实增大期保持持续增长的趋势,此时的果肉总钙呈明显下降趋势,而对应可溶性Ca^(2+)的变化幅度较大;龙柚Ca^(2+)-ATPase活性在花前较低,花期开始上升;而果皮和果肉的可溶性Ca^(2+)含量和Ca^(2+)-ATPase活性在增大期内均有一明显增长的过程或相对较高的水平.

Change of total calcium, soluble Ca^2＋ concentrations and Ca^2＋-ATPase activity of ovary（fruitlet）, rind and pulp of fruit Langyou Punnelo througlatout fruit development were investigated.The results showed：total Ca concentration in the ovary of Longyou Punnelo was at low level before and during full bloom,and significantly higher after flowering; During the stage of fruit enlargement,total Ca concentration continuously increase in the rind of fruit from Langyou Punnelo,but that of fruit pulp deceased,whereas soluble Ca^2＋-ATPase activitiese in the find and pulp of the them showed markedly increasing trends or remained relatively hing levers during the period of fruit enlargement.