鸭梨内膛及外围果实采后品质指标比较及其与黑心病发病率的关系

Comparisons of postharvest quality indexes between interior and peripheral fruits and their effects on black heart incidence in ‘Yali' pears

【目的】为了给鸭梨贮藏保鲜提供理论依据,【方法】以套袋鸭梨为试材,研究了内膛和外围果实呼吸强度、乙烯释放量、果实硬度、可溶性固形物含量(SSC)、可滴定酸含量(TA)、矿质元素含量等指标及其与黑心病发病率的关系。【结果】外围果的风味和耐贮性优于内膛果,但是在贮藏结束后外围果黑心病发病比内膛果严重,通过对内膛和外围果实的Ca含量和N/Ca、P/Ca、K/Ca、Mg/Ca、B/Ca比值的比较,【结论】认为果实中Ca含量和N/Ca比与黑心病发病率有直接关系。

[Objective]The objective of the stady was to provide a theoretical basis for ＇Yali＇ storage. [Method]The fruit quality was compared between ＇Yali＇ fruits harvested from interior and peripherical canopy, and the relationship between fruit position on the tree and black heart disease incidence was dis cussed. [Result]The results showed that, the fruits harvested from peripherixal canopy of the tree had a better storage quality and flavor than those harvested from the interior canopy, .However, they had a high er incidence of black heart. By comparing the ratio of N/Ca, P/Ca, K/Ca, Mg/Ca and B/Ca between interi-or and periphery fruits. [Conclusion] It was found that the lower content of calium and N/Ca from the pe ripherical fruits resulted in a higher black heart incidence directly.