In order to increase longevity, percent of opening florets and decreasing ethylene product, a research was done based on randomized complete block in three replications through factorial experiment in Mashad in 2003. In this research, tuberose corms were soaked in 0, 50, 100 and 150ppm concentration of for 24 hours. After planting and picking the spikes, those stored in a 5 0C cold storage which was exposed to silver thiosulfate(STS) in 4 concentration, including 0 ,400, 800 and 1200ppm. The results showed that these three characteristics were influenced by, STS and those intraction. In this regards with 100ppm concentration produced the least ethylene and increased considerable prefrence to control mean. It also had a strong effect on those two characteristics. with 150 ppm concentration and STS with 800 ppm cocentration not only decreased the ethylene product, but also it had strong impacts on the percent of opening florets and longevity, compared the rest treatments. This tretment decreased ethylene product to 2.39ppm . Furthermore it increases percent of opening florets to %32.4 and longevity to 11.3 days.

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