泥鳅杂交F_1代与亲本的生长及形态性状比较分析  

Comparative Analysis of the Growth and Morphology Traits of Hybridization Loach F_1 with Their Parents

作　　者：蒋大宁 朱明[1,2] 许建和[1,2] 徐国成[1,2] 阎明信 莫照兰 JIANG Daning;ZHU Ming;XU Jianhe;XU Guocheng;YAN Mingxin;MO Zhaolan(School of Marine Life and Fisheries Huaihai Institute of Technology,Lianyungang 222005,China;Lianyungang Long-Yangtze Bio-technology Co.,Ltd.,Lianyungang 222047,China;Jiangsu Key Laboratory of Marine Biotechnology,Huaihai Institute of Technology,Lianyungang 222005,China)

机构地区：[1]淮海工学院海洋生命与水产学院,江苏连云港222005 [2]淮海工学院江苏省海洋生物技术重点实验室,江苏连云港222005 [3]连云港龙源生物科技有限公司,江苏连云港222047

出　　处：《淮海工学院学报（自然科学版）》2018年第1期75-80,共6页Journal of Huaihai Institute of Technology:Natural Sciences Edition

基　　金：江苏省农业科技自主创新资金项目(CX(13)2041;CX(15)1014);江苏高校品牌专业建设工程一期项目(PPZY2015B159);连云港市科技局科技攻关现代农业项目(NYYQ1612);江苏省水产三新工程项目(Y2014-11)

摘　　要：比较分析了不同生长阶段的辽河泥鳅、黄河泥鳅及其杂交代的体质量、体长、生长性状以及变异系数,建立了不同生长阶段的生长方程,并对主要生长性状进行了通径分析.结果显示,在雌性样本中杂交F_1代1龄泥鳅与辽河泥鳅和黄河泥鳅相比体长分别提高了32.99%和28.43%,2龄泥鳅分别提高了35.35%和26.15%;雄性F_1代泥鳅体高、体长、尾柄长、腹鳍鳍条数是影响体质量的主要性状;雌性F_1代泥鳅背前区长、腹鳍基部到背鳍基部、胸鳍基部到吻端、鳃盖前端上侧到臀鳍前基部是影响体质量的主要性状,上述指标是理想的泥鳅选育形态测量指标.试验结果表明,辽河泥鳅(♂)×黄河泥鳅(♀)杂交F1代在生长性状上有优势,且生长优势是长期稳定的,其形态性状偏向母性遗传.By comparing the differences of body weight,body length,growth performance and variation coefficient among Liaohe loach,Yellow River loach and their hybrid generation F 1 at different growth stages,growth equations at different growth stages were established;and path analysis of main morphology traits were conducted.The results showed that when compared with the Liaohe and Yellow River loach,the body length of their hybrid generation F 1 increased about 32.99%and 28.43%respectively after one year growth,while 35.35%and 26.15%respectively after two year growth.Path analysis revealed that body length was closely related with body weight in parental loach.For the male F 1 generation,body heigh,body length,caudal peduncle length,the number of pelvic fin rays are the main morphologic characters;while for female F 1 generation,the length of back in front of dorsal fin,the base of pelvic fin to the base of dorsal fin and the base of pectoral fin to mouth,the front end of operculum to the front of the anal fin upper base are the main morphologic characters of body quality.These traits are the ideal morphology indexes in breeding loach.The results of this experiment inditcate that the hybrided generation F 1 by Liaohe loach(♂)and Yellow River loach(♀)obtain advantage in growth traits which keep stable in long term,and its morphologic characteristics are partial to that of maternal parents.

关 键 词：泥鳅 杂交育种 生长性状 形态性状 

分 类 号：S965.199[农业科学—水产养殖]