家蚕抗血液型脓病新品种明湖春江的育成  

Breeding of a New Silkworm Variety Minghuchunjiang with Resistance to Bombyx mori Nucleopolyhedrosis

作　　者：姚陆松[1] 邵国昌 钱荷英 杜鑫[1] 陈金娥[1] 徐霞 何秀玲[1] 王永强[1] Yao Lusong;Shao Guochang;Qian Heying;Du Xin;Chen Jin’e;Xu Xia;He Xiuling;Wang Yongqiang(Sericulture and Tea Institute,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China;Agriculture and Rural affairs Bureau of Chun’an County,Hangzhou 311700;School of Biotechnology,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212100,China)

机构地区：[1]浙江省农业科学院蚕桑与茶叶研究所,杭州310021 [2]淳安县农业农村局,杭州311700 [3]江苏科技大学生物技术学院,江苏镇江212100

出　　处：《蚕业科学》2024年第3期282-288,共7页ACTA SERICOLOGICA SINICA

基　　金：浙江省农业(蚕桑)新品种选育重大科技专项(2021C02072);财政部和农业农村部国家现代农业产业技术体系项目(CARS-18);国家重点研发计划政府间国际科技创新合作专项(2022YFE012700);浙江省农业重大技术协同推广计划项目(2022XTTGCS02-2)。

摘　　要：针对农村蚕桑生产中血液型脓病危害严重的现状,利用抗病种质资源,通过杂交和回交的方法选育出抗血液型脓病的家蚕四元杂交新品种明湖春江。国家和浙江省实验室鉴定结果显示,明湖春江4龄起蚕虫蛹率、出丝率与秋丰×白玉(对照)相仿,万蚕产茧量分别比对照提高8.78%、11.25%;解舒丝长达900 m以上,超过对照;洁净高于94分。国家和浙江省农村生产试验的张种产茧量分别比对照提高15.36%、11.06%,健蛹率与对照相仿。抗血液型脓病检测结果表明,家蚕核型多角体病毒(Bombyx mori nucleopolyhedrosis,BmNPV)对明湖春江的LC_(50)值为3.102×10^(8)mL^(-1),对照为2.085×10^(6)mL^(-1)。新品种于2022年5月通过浙江省主要农作物品种审定委员会审定,并于2022年12月通过国家畜禽遗传资源委员会审定。该品种适合在长江流域和黄河流域秋期饲养。In response to the serious threat of nucleopolyhedrosis to rural cocoon production,a new quaternary silkworm variety Minghuchunjiang with resistance to Bombyx mori nucleopolyhedrosis(BmNPV)was bred through hybridization and backcrossing methods,utilizing disease-resistant germplasm resources.The identification results of national and Zhejiang provincial laboratories showed that,compared with the control variety Qiufeng×Baiyu,the larva-pupa survival rate and raw silk rate of fresh cocoons of Minghuchunjiang were almost the same,while the cocoon production per 10000 larvae increased by 8.78%and 11.25%,respectively.The length of non-broken filament was over 900 m,both longer than those of the control variety.The neatness score was higher than 94 points.In the rural production test of the nation and Zhejiang Province,the cocoon yield per box of eggs of Minghuchunjiang were 15.36%and 11.06%higher than those of the control variety,respectively,while the healthy pupa rate were almost the same.The results of BmNPV resistance test showed that the LC_(50) of BmNPV to Minghuchunjiang was 3.012×10^(8)mL^(-1),while the LC_(50) of BmNPV to the control variety was 2.085×10^(6)mL^(-1).The new variety Minghuchunjiang was approved by the Crop Variety Evaluation Committee of Zhejiang Province and National Livestock and Poultry Genetic Resources Committee in May and December of 2022,respectively.It is suitable for autumn rearing both in the areas of the Yangtze River and the Yellow River valleys.

关 键 词：家蚕品种 血液型脓病 斑纹限性 品种选育 明湖春江 

分 类 号：S882.2[农业科学—特种经济动物饲养]