摘要
运用加性-显性-上位性遗传模型及其分析方法,研究了兴国红鲤(Cyprinus carpiovar.singuonensis)、荷包红鲤(C.carpiovar.wuyuanensis)和瓯江彩鲤(C.carpiovar.color)的双列杂交子二代F2的体质量和10个形态性状(全长、体长、体高、体宽、头长、吻长、眼径、眼间距、尾柄长和尾柄高)的上位性遗传效应。结果表明,除体高外,其余性状均存在不同程度的加性×加性上位性方差,其中体质量、全长、体长、头长、吻长和尾柄长的加性×加性上位性方差达显著水平(P<0.05);这10项性状的上位性方差占总遗传变异量的百分率为:体质量11.4%、全长22.6%、体长14.0%、体宽8.3%,头长24.2%、吻长17.5%、眼径12.9%、眼间距23.1%、尾柄长5.4%和尾柄高20.1%;通过3种红鲤亲本的遗传育种效应预测发现,瓯江彩鲤的加性和上位性效应能显著增加后代的体质量、全长和体长,而兴国红鲤和荷包红鲤的加性和上位性效应能显著降低后代的体质量、全长和体长。上位性遗传效应在鱼类数量性状的遗传育种中具有较重要作用。[中国水产科学,2006,13(4):573-578]
Red common carp are very excellent genetics and breeding materials in aquaculture in China, but the study on their quantitative genetics has not been conducted yet. In this paper, the additivedominanceepistasis genetic model was used to analyzed additive, dominance and epistatic genetic effects for body weight and 10 morphometric traits （total length, standard length, body depth, body width, head length, snout length, eye diameter, iterorbital width, Caudal peduncle length and Caudal peduncle depth） from three variants of red common carp, Cyprinus carpio var. Singuonensis, C. carpio var. Wuyuanensis and C. carpio var. Color, based on F2 data from diallel cross experiment. The results indicated： except the trait of body depth, the additive additive epistatic effects were observed in the other traits. In which, the additiveadditive epistatic effects were significant in traits of body weight, total length, standard length, head length, snout length and caudal peduncle length. The proportions of epistasis to phenotype variance of 10 traits were： body weight 11.4%, total length 22.6%, standard length 14.0%, body width 8.3%, head length 24.2 %, snout length 17.5 %, eye diameter 12.9 %, interorbital width 23.1%, caudal peduncle length 5.4 % and caudal peduncle depth 20.1%. Through the genetic merit prediction of three parents, it was found that the additive and additiveadditive epistatic effects of C. carpio var. Color could increase the body weight, total length and standard length in progenies, but the these two effects of C. carpio var. Singuonensis and C. carpio var. Wuyuanensis could decease the body weight, total length and standard length in progenies. Epistatic genetic effect could play an important role in genetic selection and breeding in fish. [ Journal of Fishery Sciences of China, 2006,13 （4） ： 573 - 578 ]
出处
《中国水产科学》
CAS
CSCD
北大核心
2006年第4期573-578,共6页
Journal of Fishery Sciences of China
基金
浙江省科委项目(2003C32026)
上海市重点学科建设项目(Y1101)
上海水产大学博士启动资金项目(科02198)
关键词
红鲤
体质量
形态性状
上位性效应
遗传分析
red common carp
body weight
morphometric traits
epistatic effect
genetic analysis
