Effects Of Calcium Treatment On Carbohydrate Metabolism Mechanism Of Kiwifruit After Harvest

The kiwifruit is berry fruit with specific respiratory climacteric, it is not usually able to bear storing and transporting under ordinary conditions. It is important for understanding softening mechanism of kiwifruit that we study effects of calcium treatment on carbohydrate metabolism mechanism of kiwifruit after harvest systematically, It is worth studying that probing into carbohydrate biochemical and physiology changes of kiwifruit after harvest during the soften and senescence process. It regards ten-year-old Fengyue (Actinidia Chinensis cv. Fengyue) and Jinkui (Actinidia Deliciosa cv. Jinkui)as materials , It deals with them with the clean water(CK),1%Ca(NO3)2+NAA100mg/L(F1) ,3%Ca(NO3)2 +NAA100mg/L(F2), respectively. Under 0-4 low-temperature preservation terms, we aim at studying key enzyme, the content sucrose, fructose and fruit pectin of kiwifruit carbohydrate metabolism after harvest termly, The result of the test is as follows:1.The amount of sucrose , deoxidizing sugar and fructose of kiwifruit is on the rise generally after harvest, but the content of starch and firmness presents the downward trend. The main sugar is the fructose in ripen-kiwifruit. F1 and F2 can delay the content of fructose and sucrose effectively. F1 and F2 can delay the degradation the starch too. At the same time it can suppress the improving of the water soluble pectin. Jinkui is better.2.Among sugar metabolism of kiwifruit SPS degrade to Invertase and SS obvious, the amylase plays an important role during the starch metabolism.3. F1 and F2 can reduce the activity of kiwifruit amylase , PG and cellulase effectively, maintain kiwifruit firmness of fruit, Slow down the hydrolysising of original pectin. F2 result better among them.