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首页> 外文期刊>植物防疫所調查研究報告 >Efficacy of vapor heat treatment on sweet potato infested with sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), and sweet pota
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Efficacy of vapor heat treatment on sweet potato infested with sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), and sweet pota

机译：蒸气加热处理对甘薯象鼻虫，Cylas formicarius（Fabricius）（鞘翅目：Brentidae），西印度甘薯象鼻虫，Euscepes postfasciatus（Fairmaire）（鞘翅目：Curculionidae）和甘薯侵染的甘薯的功效

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摘要

The mortality of Cylas formicarius, Euscepes postfasciatus and Omphisa anastomosalis infesting sweet potatoes and thermal damage in or on sweet potatoes, caused by vapour heat treatment, was determined. All species were treated by forcing air at 48鳦 saturated with water vapour (>94% RH) into sweet potato tubers. After the temperature of the innermost part of sweet potatoes reached 47鳦, complete mortality of C. formicarius, E. postfasciatus or O. anastomosalis was achieved following treatment for150, 60, and 90 minutes, respectively. However, a single temperature treatment of 47鳦 for 150 minutes promoted rotting in sweet potatoes in storage 2 weeks after treatment. Rotting was suppressed by incremental changes in air temperature from 31 to 41鳦for 240 minutes with saturated water vapour prior to the single temperature treatment of 47鳦 for 150 minutes. However, surviving C. formicarius pupae were detected in sweet potatoes subjected to an incremental temperature treatment and a single temperature treatment of 47鳦 for 150 minutes. It was concluded that the incremental temperature treatment might adversely affect mortality following a single temperature treatment. When the holding time for the single temperature treatment was increased to 190minutes (plus a single temperature treatment of 47鳦 for 190 minutes) 59 and 154 C. formicarius pupae were killed. There was no injury to sweet potato for an incremental temperature treatment plus a single temperature treatment of 47鳦 for 190 minutes.
机译：确定了Cylas formicarius，Euscepes postfasciatus和Omphisa anastomosalis侵染甘薯的死亡率以及由蒸汽热处理引起的甘薯内或甘薯的热损伤。通过将水蒸气（> 94％RH）饱和的48°C的空气强行注入甘薯块茎来处理所有物种。在甘薯最内层的温度达到47℃后，分别处理150分钟，60分钟和90分钟，即可达到烟灰梭菌，筋膜肠球菌或吻合曲霉的完全死亡。但是，在47°C的温度下进行150分钟的单一温度处理，会使处理后2周的红薯在贮藏中腐烂。通过用饱和水蒸气将空气温度从31升至41鳦持续240分钟，然后在47鳦进行150分钟的单次温度处理，可抑制旋转。然而，在经过增量温度处理和47°C单温度处理150分钟的甘薯中，发现了存活的C. formicarius up。结论是，单次温度治疗后，递增温度治疗可能会对死亡率产生不利影响。当单一温度处理的保持时间增加到190分钟（加上47℃的单一温度处理190分钟）时，杀死了59和154℃的for。增量温度处理加上190分钟47°的单一温度处理不会对甘薯造成伤害。

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