摘要
为探明微卫星标记与猪经济性状杂种优势的相关关系,采用聚丙烯酰胺凝胶垂直板电泳,筛选应用6个猪微卫星标记估测了长白公猪×大白母猪(长大)、大白公猪×长白母猪(大长)、大白公猪×长大母猪(大长大)和杜洛克公猪×长大母猪(杜长大)4个不同杂交组合亲本间的遗传距离,分析了它与猪杂交后代经济性状杂种优势率的相关关系.结果表明:亲本间微卫星标记遗传距离与杂交后代日增重、料肉比等生产性状均呈强正相关关系,相关系数分别为0.6276,0.3899,与瘦肉率﹑眼肌面积、后腿比率和熟肉率等胴体性状均呈强负相关关系,相关系数分别为-0.8359,-0.5396,-0.9930和-0.6679,因而可作为预测这些性状杂种优势的指标.
An investigation was undertaken to clarify the polymorphisms of micro-satellite markers and partial economic traits in pigs. Genetic distance between the parental breeds Duroc（D）, Landrace（L）, Large White（W）, and LW of their crosses were measured using 6 micro-satellite markers. Correlation between the micro-satellite parameters and heterosis were analysed. The results showed that the micro-satellite-based genetic distances were significantly related with heterosis of the traits including average daily gain, feed gain ratio and dressing percentage, and hence could be used as an index for prediction of heterosis of the above-mentioned traits.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第5期592-594,共3页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省科学技术厅重点项目(01-974-07)
湖南农业大学创新团队项目(2004TD03)
关键词
猪
微卫星标记
遗传距离
杂种优势预测
pig
micro-satellite marker
genetic distance
prediction of heterosis
