宜昌主栽猕猴桃品种耐贮性特征

Characteristics of Storability of main Actinidia chinensis Cultivars in Yichang

摘要:

以‘金桃’‘翠玉’‘金艳’‘黄金果’‘东红’‘徐香’‘红阳’7个宜昌猕猴桃主栽品种为试材，探究在冷藏、冷藏后常温存放5 d两种条件下，果实失重率、硬度、可溶性固形物三个指标随贮藏时间的变化。研究表明，果实失重率均随贮藏时间的延长而上升，冷藏后常温存放5 d的条件下果实失重率高于冷藏条件，两种条件均为‘黄金果’失重率最高，‘徐香’失重率最低。果实硬度随贮藏时间的延长而下降，冷藏条件下，较耐贮的为‘金桃’‘徐香’，其次是‘翠玉’‘黄金果’‘红阳’，贮藏性较差的为‘金艳’‘东红’。冷藏后常温存放5 d的条件下，果实硬度下降较快，‘红阳’最不耐贮。两种条件下均为果实可溶性固形物含量与硬度呈反比，可溶性固形物含量均为‘红阳’>‘金艳’或‘东红’>‘黄金果’>‘翠玉’>‘徐香’>‘金桃’。

Abstract:

Seven main cultivars of Actinidia chinensis in Yichang, namely ‘Jintao’‘Cuiyu’‘Jinyan’‘Hort 16A’‘Donghong’‘Xuxiang’and‘Hongyang’, were used as materials. The study was to explore the changes of weight loss rate, hardness and soluble solid content of fruits with storage time under cold storage or 5 days after cold storage. The results showed that ite weight loss rate of fruits increased with the prolongation of storage time. The weight loss rate of fruits at 5 days after cold storage was higher than that under cold storage. The weight loss rate of ‘Hort 16A’ was the highest, and that of ‘Xuxiang’ was the lowest. The hardness of the fruits decreased with the prolongation of storage time. The more storable ones were ‘Jintao’ and ‘Xuxiang’, followed by ‘Cuiyu’‘Hort 16A’ and ‘Hongyang’, and the less storable ones were ‘Jinyan’ and ‘Donghong’. The fruit hardness decreased rapidly at 5 days after cold storage, and ‘Hongyang’ was the least storable under this condition. Under both conditions, the soluble solid content of fruit was inversely proportional to hardness. The soluble solid content was ‘Hongyang’ > ‘Jinyan’ or ‘Donghong’ > ‘Hort 16A’ > ‘Cuiyu’> ‘Xuxiang’ > ‘Jintao’.