新疆英格尔蟠桃果实发育过程中品质相关因子的变化研究

【研究目的】笔者对"英格尔"蟠桃果实发育过程中品质相关因子的变化进行研究，旨在对蟠桃果实的品质调控和适时采收提供相关依据。【方法】以蟠桃品种英格尔为试材，研究了果实发育过程中纵横径、单果鲜重、可溶性固形物、可滴定酸及抗坏血酸含量的变化。【结果】研究表明：新疆英格尔蟠桃果实发育期为盛花后100-110天；果实发育过程中纵横径的变化与单果鲜重变化趋势一致，呈正相关；可溶性固形物含量前期逐渐升高，至70天后开始平稳下降；此外，抗坏血酸含量在果实发育初期增长迅速，盛花后50天时开始下降至90天后略有回升直至采收，而可滴定酸含量则在整个发育期呈逐渐下降趋势；【结论】由此认为，英格尔蟠桃在新疆乌鲁木齐地区能较好地保持品种特性，果实适宜的采收时期为盛花后100天左右，口感风味较佳。

Changes of Quality-related Factors during Fruit Growth and Development of

【OBJECTIVE】To provide relative evidence for the regulation of flat peach fruit quality and to determine the proper time for fruit picking, the changes of quality-related factors during fruit growth and development of flat peach (Prunus persica L. Batsch, cv. Yingger) were studied at present research.【METHOD】Flat peach fruits of "Yingger" were picked every 10 days during fruit growth and development. Vertical diameter, horizontal diameter, fresh weight, soluble solid content (SSC), titratable acidity (TA) and ascorbic acid were measured during storage.【RESULTS】The results showed that the whole fruit development period of Yingger flat peach was around 100 to 110 days after fully blossom. The changes of horizontal and vertical diameters showed the same trend with the change of fresh weight. Soluble solid content increased till 70 days after fully blossom and then decreased smoothly. Besides, ascorbic acid increased steadily till 50 days after fully blossom, and then decreased. After 90 days, ascorbic acid content increased a bit and stayed constant until picking, while the content of titratable acidity declined all the time. 【CONCLUSION】Thus, Yingger flat peach shows its own characteristics in Xinjiang and the best time for picking up the fruit is around 100 days after fully blossom.