This paper reviewed studies on kiwifruit ripening and softening and its regulation including fruit softening-related enzymes such as pectinesterase(PE), polygalacturonase (PG), xyloglucan endotransglycosylase ( XET ), β-galactosidase, cellulase, starchase, the regulation of ethylene,abscisic acid(ABA), indole-3-acetic acid(IAA) on fruit ripening and the effect of calcium on fruit ripening.

Effect of Fungicides and Waxing on Ripe-softening and Postharvest Diseases of“Zihua”Mango;

EfectofPlantGrowthRegulatorsonRipe-softeningin‘Zi hua’;

Changes in Cell Wall Components and Related Hydrolytic Enzymes in Fruit Softening;

In order to determine the expression pattern of LOX gene family and the relationship between members of LOX gene family and fruit softening, the technical system of QPCR was established for LOX gene family; MeJA treatment was used to test the regulation of LOX genes expression.

Focusing on various enzymes for cell wall metabolism,with regard to enzymes activity and their genes expression during ripening or softening of different fruits,the latest research advancement was reviewed,and mechanism of fruit softening was speculated in this paper.

【Objective】 This experiment was aimed to discuss the relationship between cell wall metabolism and fruit softening,and their regulation in harvested \'Jingbaili\' pear to provide a theoretical basis for improving fruit quality and inhibiting fruit softening【Method】 Fruits of pear cultivar \'Jingbaili\'(Pyrus ussuriensis Maxin.