ＳＴＳ溶液を加用したゲル状給水材の輸送中処理によるカーネーション切り花の鮮度保持と品質保持期間の延長

Abstract

Cut carnations were subjected to simulated wet transport with their stem bases in a pickle containing a gelling agent with 0, 0.1, 0.2, 0.4, and 0.8mM silver thiosulfate (STS) solution for 1, 3, 6, 12, 24, and 48 hr at 25°C in the dark to examine the retention of freshness and prolongation of vase life. The amount of water absorbed by cut carnation flowers from the pickle was about 20-30% less than that taken up from deionized water. However, the fresh weight of both groups of cut flowers increased by almost the same amount during transportation. Flowers transported in the pickle maintained their freshness as much as the flowers transported in deionized water but those transported in a dry condition lost moisture and wilted. Vase life of cut carnations transported in the pickle with STS solution lasted longer than that of the flowers transported in the pickle without STS or those transported dry. The data reveal that cut carnation flowers absorb Ag from the pickle with STS solution. The vase life of cut flowers treated with the pickle with STS solution or STS solution alone was affected by the quantity of Ag absorption, and not by the means of absorbing Ag. We recommended that STS concentration be added to a pickle to extend vase life, was 0.2 mM, when the transportation period was 6-12 hr.