摘要
在不育剂室内外筛选试验均获成功的基础上,为了解其广泛应用于桑园的安全性,对筛选出的CSⅡ不育剂(可湿性粉剂)进行了家蚕急性毒性及不育性测定。前者采用饲喂浸过不育剂饱和溶液桑叶的办法进行测定;后者采用新月、新松两品种进行正交、反交测试。正杂交方式为♀(新松)×♂(新月);反交方式为♀(新月)×♂(新松)。结果表明,CSⅡ对家蚕无急性毒性;对其化蛹影响很大,但对其化蛹后发育到蛾期影响不大,也无不育性。不论是添食还是喷体,在不育剂溶液浓度为1.0%时,其上簇吐丝结茧率均达84%以上,因而对大量养蚕不制蚕种的桑园来说,可以使用该不育剂1.0%以下浓度的溶液在桑园喷雾防治山楂叶螨。
Based on the successful screening experiments on some chemosterilants in lab and in the field,the chemosterilant CSⅡ(wettable powder)developed by the study group and proved to have best sterile effect against Tetranychus viennensis was selected for the determination of the acute toxicity and sterility against two silkworm breeds Xinsong and Xinyue,Bombyx mori L.The toxicity was determined by feeding the larvae with white mulberry leaves saturated with CSⅡ and the sterility determined by observing the second generation come from the crossbreed of the 2 breeds.The results are as follows: (1) CSⅡhas no acute toxicity to the silkworm;(2) CSⅡ has evident impact on the pupation of the worm,but has no evident impact on the emergence of the worm and no sterility against the silkworm;(3) the percentage of pupation is 84% when the concentration of CSⅡis 1.0%.So it is admitted that CSⅡcan be used against tetranychid mites in the mulberry garden at the concentration of 1.0% when the purpose of the garden is just feeding up a lot of cocoons of the silkworm. 1.0%when
出处
《中国森林病虫》
北大核心
2005年第3期6-8,共3页
Forest Pest and Disease
基金
国家自然科学基金资助项目"宁夏光肩星天牛等成灾害虫不育技术研究"(39660067)
关键词
不育剂
急性毒性
不育性
家蚕
chemosterilant
acute toxicity
sterility
Bombyx mori
