单交制种专用家蚕品种浙凤一号的选育.pdf

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1、『e仃cellI霉豳2013，39(5)：0906—0912ISSN0257—4799：CN32—1115／SE—mail：CYKE@chin~ourna1．net．ca单交制种专用家蚕品种浙凤一号的选育王永强孟智启祝新荣姚陆松杜鑫刘培刚沈爱琴柳新菊曹锦如何秀玲(浙江省农业科学院蚕桑研究所，杭州310021)摘要利用无性克隆及定向选择技术育成高孵化率雌蚕无性克隆系雌29，通过导入限性标记基因及回交改良方法育成家蚕限性卵色系卵36。用雌29和卵36生产一代杂交种可免去雌雄蛹鉴别工序，显著提高制种效率和杂交率，公斤茧制种量比对照品种秋丰x白玉提高32．83％。2013年这对可单交制种的家蚕品种通过

2、浙江省农作物品种审定委员会审定，定名为浙凤一号。新品种具有孵化、眠起、上蔟齐一，蚕体和茧形大的特点，而且茧丝质性状优良：万蚕产茧量、万蚕产茧层量、5龄1El万蚕产茧层量分别比对照品种秋丰x白玉提高6．82％、9．60％、6．20％；茧丝长1217m，解舒丝长874m，洁净95．88分，出丝率16．24％，均高于对照品种。关键词家蚕品种；浙凤一号；无性克隆系；限性卵色系；杂交育种；单交制种中图分类号$882．2文献标识码B文章编号0257—4799(2013)05—0906—07BreedingofBombyxrnoriVarietyZhengNo．1SpeciallyforEggsProduc

3、tionbySingleCrossingWANGYong-QiangMENGZhi—QiZHUXin—RongYAOLu—SongDU—XinLIUPei—GangSHENAi·-QinLIUXin-JuCAOJin·-RuHEXiu-Ling(SericulturalResearchInstitute，ZhejiangAcademyofAgriculturalSciences，Hangzhou310021，China)AbstractInthisstudy，afemalesilkwormparthenOgeneticlineFemale一29withhighhatchingratewasbr

4、edbyemplo—yingparthenOgeneticcloninganddirectionalselectiontechniquesandasilkwormeggcolorsex—limitedlineEgg-36wasbredthroughintroducingsex—limitedmarkergenesandbackcrossimprovement．F1hybridsilkwormeggsproductionusingFemale-29andEgg-36wasexemptedfrOmmanualsortingoffemaleandmalepupae．Therefore．theeffi

5、ciencyofeggsproductionandrateofhybridizationweresignificantlyimproved．Thequantityofsilkwormeggsproducedfr0mperkilogramcocoonsofFemale-29xEgg-36was3283％higherthanthatofthecontrolvarietyQiufengxBaiyu．ThispairofsilkwormvarietieswhichiscapableofeggsproductionbysinglecrossinghadbeenapprovedbytheAgricultu

6、ralCropVarietyEvaluationCommitteeofZhejiangProvincein2013andnamedZhefengNo．1．Thisnewvarietywasuniforminhatching，moltingandmounting．Itslarvaeandcocoonswereofbigsize．Itscocoonfilamentwasofexcelentquality：cocoonweightper10000larvae，cocoonshellweightper10000larvae，cocoonshellweightper10000larvaeatday1of

7、the5thinstarwas6．82％．9．60％and6．20％higherthanthatofthecontrolvarietyQiufengxBaiyu．respectively．Itscocoonfilamentlengthwas1217m，non—brokencocoonfilamentlengthwas874m，neatnesswas95．88points，andrawsilkrat