家蚕现行品种对氟化物、核型多角体病毒病抵抗性的研究

对若干家蚕现行新品种进行抗氟性能和抗核型多角体病毒（ＶＰＶ）病鉴定，结果是：不同品种对氟化物和ＶＰＶ病抵抗力有差异，抗氟能力较强的有丰一、８７２、５４Ａ、丰一×５４Ａ、华峰×雪松、８７１×８７２：抗ＮＰＶ病较强的是３１８、４１６、秋３、３１７×３１８、４１５×４１６、８７１×８７２；抗氟性和抗ＮＰＶ病能力没有完全一致性，但３１７×３１８、８７１×８７２综合抗性较强。杂交种的抗氟和抗ＮＰＶ病明显强于纯系。

STUDIES ON RESISTANCE OF CURRENT SILKWORM RACES Bombyx mori TO FLUORIDE AND NUCLEAR POLYHEDROSIS VIRUS

We have identified the resistance of several commercial silkworm Bombyx mori races to fluoride and nuclear polyhedrosis virus(NPV),and found the results as follows:The resistances to fluoride and NPV are differential in different silkworm races;the re-sistances to fluoride in the races of Fengyi,872,54A,Fengyi ×54A,huafeng×Xuesong,871×872 are stronger than those of other varieties,and the resistances to NPV in theraces of 318,416,Qiu3,317×318,415×416 and 871×872 are stronger than those of other races:the resistance to fluoride does not accord with the resistance to NPV in thesame silkworm race,but the combination of the two qualities is excellent in 317×318and 871×872:the resistance of hybrid to fluoride and NPV is remarkably better than that of pure race.