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当前位置: 首页 > 文章 > 广西性连锁平衡致死系雄蚕品种材料选育初报 南方农业学报 2011,42 (10) 1280-1283
Position: Home > Articles > Preliminary report on breeding male silkworm varieties corresponding to sex-linked balanced lethal line in Guangxi Journal of Southern Agriculture 2011,42 (10) 1280-1283

广西性连锁平衡致死系雄蚕品种材料选育初报

作  者：
韦博尤;闭立辉;黄玲莉;顾家栋;罗坚;苏红梅;蒙艺英
单  位：
广西蚕业科学研究院
关键词：
雄蚕品种;性连锁平衡致死系;选育;广西
摘  要：
【目的】创新南亚热带桑蚕品种资源,实现专养雄蚕,进一步提高广西蚕茧质量。【方法】2005年广西蚕业科学研究院从浙江省农业科学院蚕桑研究所引进性连锁平衡致死系雄蚕品种材料进行培育改良。【结果】初步培育的雄蚕基础材料平桂12L1L2·平28、平桂10L1L2·平32在生命率方面均有所提高,其中品种平桂12L1L2·平28最明显,虫蛹生命率达87.26%,比其亲本平28提高了22.15%(绝对值,下同);两个培育材料的茧层率分别为23.32%和21.64%,较充血亲本7532提高了2.44%和0.76%;其雄性个体与常规品种雌性个体杂交,所得F1代雄蚕率达100.00%、茧层率在23.50%以上、结茧率在97.00%以上,茧丝质各项指标较其雄蚕亲本均有所提高。【结论】将性连锁平衡致死系性别控制基因导入广西常规基础品种7532中培育改良获得的平桂12L1L2·平28和平桂10L1L2·平32,生命力较强,饲养成绩良好,经后续转育改良,可成为热带、亚热带型性连锁平衡致死系雄蚕品种,在广西区内可实现专养雄蚕。
译  名：
Preliminary report on breeding male silkworm varieties corresponding to sex-linked balanced lethal line in Guangxi
作  者：
WEI Bo-you,BI Li-hui,HUANG Ling-li,GU Jia-dong,LUO Jian,SU Hong-mei,MENG Yi-ying(Guangxi Academy of Sericultural Sciences,Nanning 530007,China)
关键词：
male silkworm variety;sex-linked balanced lethal line;breeding;Guangxi
摘  要：
[Objective]The present experiment was conducted to innovate the resources of subtropical mulberry varieties in South Asia and to improve the quality of silkworm cocoon in Guangxi.[Method]The male silkworm materials,viz.,Ping 28 and Ping 32,corresponding to sex-linked balanced lethal line,were introduced to Guangxi Academy of Sericultural Sciences from Sericultural Research Institute,Zhejiang Academy of Agricultural Sciences and were crossed and improved with conventional varieties,viz.,7532(Japanese line) ,Liangguang 2 direct cross(Fu·9×7·Xiang) and dual hybrid Fu·9(Furong×932) in 2005.[Result]The larva survival rates of two breeding male silkworm based materials Pinggui 12L1L2·Ping 28 and Pinggui 10L1L2·Ping 32 were increased significantly,especially in Pinggui 12L1L2·Ping 28,where it was 87.26%(increased by 22.15%,absolute value) ,compared to parent Ping 28.The cocoon shell formation rate of Pinggui 12L1L2·Ping 28 and Pinggui 10L1L2·Ping 32 was 23.32 and 21.64%,which increased by 2.44 and 0.76% compared to parent 7532,respectively.When the male individual was crossed with female individual,the rate of F1 male silkworm was 100%,the cocoon shell formation rate was over 23.50% and the cocooning rate was over 97.00%.The quality indices of cocoon silk were found better than parents.[Conclusion]The improved varieties,viz.,Pinggui 12L1L2·Ping 28 and Pinggui 10L1L2·Ping 32,which were derived from 7532,a sex-linked balanced lethal line,had stronger vitality and better feed effects,and they may be improved into tropical and subtropical male silkworm varieties corresponding to sex-linked balanced lethal line and used as special breed of male silkworm.

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