The Comparative Study of the Growth and Storage Characteristics of ‘Baojiahong’ and ‘Zaojiubao’ in Prunus persica

Based on tested materials collected from Da Checheng Village of Southern Zhiqiu Township,Xinji City,Hebei Province,a comparative analysis on the dynamic changes of fruit mass,transverse and longitudinal diameters,contents of total sugar,and titratable acidity of ‘Baojiahong' and ‘Zaojiubao' in Prunus persica during fruit growth was conducted,and the changes of its soluble solids content,firmness and weight loss during storage was also studied. The results revealed that the fruit mass,transverse and longitudinal diameters of ‘Baojiahong'showed a double sigmoid curve pattern,the content of total sugar increased during the fruit growth of ‘Baojiahong',the titratable acid level was increased at first and then decreased,the fruit firmness of ‘Baojiahong'altered slowly at the initial stage of fruit growth while it decreased quickly during the period of rapid fruit growth and the ratio between sugar and acid increasesed gradually. All of these fruit traits demonstrated that‘Baojiahong'had a similar fruit growth characteristics with ‘Zaojiubao'. ‘Baojiahong'also displayed a better fruit storage characteristic compared with‘Zaojiubao',and‘Baojiahong'fruits could remain the relatively high levels of the firmness and soluble solid content and its natural flavor was still conserved under the conditions of ambient storage for 6 days or cold storage( 0℃) for 27 days.