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jia can he xing duo jiao ti zai shi nei zi ran huan jing xia de cun huo qing kuang
Author(s): 
Pages: 27-29
Year: Issue:  4
Journal: Guangxi Sericulture

Keyword:  家蚕核型多角体病病原 活力 自然环境条件 发病率;
Abstract: 本试验将感染家蚕核型多角体(BmNPV)的病蚕放置于室内,在自然环境条件下保存不同时间后,分别测定BmNPV致病力,结果显示放置1d,体内病原的活力仍很强,在BmNPV浓度为1×107个/mL时,感染家蚕发病率达88.33%,放置15d后,发病率下降至35%;30d后,病原基本失活,感染家蚕发病率为0。表明病蚕在室内自然环境条件下(在温度28~31℃、相对湿度74%~83%的范围内)放置一定的时间,病蚕体内BmNPV还存在着病原性,且病原性随着放置时间的增长呈逐渐降低的趋势。
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