摘要
为深入了解彭泽鲫(Carassius auratus var.pengzesis)生长性状的遗传变化规律,并以此为基础制定彭泽鲫合理的育种方案。以九江市水产研究所培育的彭泽鲫23个全同胞家系的个体为实验材料,测量这些家系中1冬龄个体的生长性状(总长、体长、体高、体厚、体重),并用动物模型对数据进行遗传分析。结果表明:彭泽鲫1冬龄总长、体长、体高、体厚、体重5个性状的遗传力分别为0.64±0.17、0.51±0.16、0.79±0.18、0.57±0.16、0.65±0.17,均属于高水平遗传力。这5个性状之间表型相关(0.79~0.94)和遗传相关(0.95~1.00)均较高。采用个体选育或者个体选育与家系选择法相结合的方法对彭泽鲫进行遗传改良都能获得较好的遗传进展,且对某一生长性状进行选育时,其他性状也会得到间接改良。
To study the genetic rules of growth traits of Carassius auratus var.pengzesis, and make a breeding plan of C.auratus var.pengzesis, 23 full sibs families from Jiujiang Fisheries Research Institute were used as materials, and the raw data of growth traits(total length, body length, body height, body width, body weight) of about a-whole-year individuals were detected, and the genetic analysis was conducted with animal model.The results showed that the heritability of the above five traits was 0.64±0.17, 0.51±0.16, 0.79±0.18, 0.57±0.16,0.65±0.17, respectively.The heritability of these traits was all at a high level.The phenotypic correlation(0.79 to 0.94) and the genetic correlation(0.95 to 1.00) between these five traits were all relatively high.All the results show that individual selection or individual selection combining with family selection will get the ideal genetic gain, and if we continue to select one of these traits, the other traits will be improved in the same time.
作者
徐金根
曹烈
金武
何义进
邴旭文
王建民
Xu Jingen;Cao Lie;Jin Wu;He Yijin;Bing Xuwen;Wang Jianmin(Jiujiang Fisheries Research Institute,Jiujiang Jiangxi 332000;Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences,Wuxi Jiangsu 214081)
出处
《中国农学通报》
2020年第33期134-137,共4页
Chinese Agricultural Science Bulletin
基金
江西省大宗淡水鱼产业技术体系赣北片综合试验推广站项目(JXARS-03-赣北片)
江西省重点研发计划项目“鄱阳湖鲫鱼资源开发、利用及育种”(20171BBF60055)
“家系法建立鄱阳湖鲫鱼种质资源核心库”(20161BBF60015)
“基于电子标签下的鄱阳湖鲫鱼良种选育及其优良性状关联的分子标记鉴定”(2019年九江市科技局项目)。
关键词
彭泽鲫
生长性状
遗传力
遗传参数
家系选择
Carassius auratus var.pengzesis
growth related traits
heritability
genetic parameters
family selection
