中国大菱鲆引进群体三代选育之后的收获体重遗传进展评估

doi:10.11924/j.issn.1000-6850.casb2021-0016

中国农学通报 ›› 2021, Vol. 37 ›› Issue (35): 118-123.doi: 10.11924/j.issn.1000-6850.casb2021-0016

中国大菱鲆引进群体三代选育之后的收获体重遗传进展评估

孙松¹^,²(), 胡玉龙¹^,², 吕丁¹^,², 王伟继¹^,²()

¹中国水产科学研究院黄海水产研究所,农业农村部海洋渔业可持续发展重点实验室,山东青岛 266071
²青岛海洋科学与技术试点国家实验室海洋渔业科学与食物产出过程功能实验室,山东青岛 266071

收稿日期:2021-01-08 修回日期:2021-08-05 出版日期:2021-12-15 发布日期:2022-01-07
通讯作者: 王伟继
作者简介:孙松,男,1995年出生,山东枣庄人,硕士,研究方向：水产动物遗传育种。通信地址：266071 山东省青岛市市南区南京路106号中国水产科学研究院黄海水产研究所育种室,E-mail： sunsong1994@163.com。
基金资助:
山东省农业良种工程项目“大菱鲆抗腹水症、耐氨氮性状分子育种及机制解析”(2019LZGC013)

Evaluation of Genetic Gain for Harvest Body Weight in Turbot (Scophthalmus Maximus, Linnaeus) After Three Generations

Sun Song¹^,²(), Hu Yulong¹^,², Lv Ding¹^,², Wang Weiji¹^,²()

¹Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shandong Qingdao 266071
²Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shandong Qingdao 266071

Received:2021-01-08 Revised:2021-08-05 Online:2021-12-15 Published:2022-01-07
Contact: Wang Weiji

摘要/Abstract

摘要：

评估了大菱鲆3个世代选育后（G0、G1、G2和G3）收获体重的遗传参数及遗传进展,分析数据来自于4个世代构建的总共590个家系的12980尾个体。G0、G1、G2和G3的收获体重性状估计遗传力分别为0.19±0.08、0.18±0.09、0.51±0.09和0.29±0.16,跨世代的遗传力为0.16±0.03。根据每一世代所有个体和留作亲鱼个体的平均估计育种值计算了选择差,在G0中为45.6 g,在G1中为13.1 g,而在G2代是 -27.9 g,每代平均10.3 g。遗传进展分别为10.2、37.4、0.3 g,分别相当于2.06%、8.76%、0.04%。经过3个世代选育后的收获体重性状的累积遗传进展为10.86%,平均每代3.56%,表明大菱鲆体重性状的选育工作总体上是成功的。

关键词: 大菱鲆, 选择育种, 体重, 遗传进展

Abstract:

The genetic parameters and genetic progress of harvest weight of turbot after breeding in three generations (G0, G1, G2 and G3) were evaluated. The data included 12,980 individuals from 590 families. The estimated heritability of harvested weight traits of G0, G1, G2 and G3 was 0.19±0.08, 0.18±0.09, 0.51±0.09 and 0.29±0.16, respectively, and the heritability across generations was 0.16±0.03. Based on the average estimated breeding value of all individuals and retained parental species in each generation, the selection differential is calculated, 45.6 g in G0, 13.1 g in G1, -27.9 g in G2, respectively, 10.3 g per generation. Genetic progression was 10.2 g, 37.4 g, and 0.3g, equivalent to 2.06%, 8.76%, and 0.04%, respectively. The cumulative genetic progress after three generations was 10.86% of body weight, with an average of 3.56% per generation, indicating that the breeding of weight traits of turbot was generally successful.

Key words: turbot, selective breeding, weight, genetic gain

中图分类号:

S962.1

孙松, 胡玉龙, 吕丁, 王伟继. 中国大菱鲆引进群体三代选育之后的收获体重遗传进展评估[J]. 中国农学通报, 2021, 37(35): 118-123.

Sun Song, Hu Yulong, Lv Ding, Wang Weiji. Evaluation of Genetic Gain for Harvest Body Weight in Turbot (Scophthalmus Maximus, Linnaeus) After Three Generations[J]. Chinese Agricultural Science Bulletin, 2021, 37(35): 118-123.

图/表 4

参考文献 30

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世代	年份	全同胞家系数	个体数	平均每个家系个体数	收获体重最小二乘均值/g
G0	2006	55	1311	23.84	444.11
G0	2007	57	3790	66.49	444.11
G1	2009	71	995	14.01	494.94
	2011	95	985	10.36
	2012	38	798	21
G2	2013	79	1887	23.89	427.32
	2014	97	932	9.6
	2016	48	1193	24.85
G3	2017	22	164	7.45	817.01
G3	2019	31	925	29.84	817.01

世代	年份	全同胞家系数	个体数	平均每个家系个体数	收获体重最小二乘均值/g
G0	2006	55	1311	23.84	444.11
G0	2007	57	3790	66.49	444.11
G1	2009	71	995	14.01	494.94
	2011	95	985	10.36
	2012	38	798	21
G2	2013	79	1887	23.89	427.32
	2014	97	932	9.6
	2016	48	1193	24.85
G3	2017	22	164	7.45	817.01
G3	2019	31	925	29.84	817.01

世代	加性遗传效应方差σ_a²	母本及共同环境效应方差σ_d²	残差方差σ_e²	表型方差σ_p²	遗传力h²±se	母本和共同环境效应c²±se
G0	3618.22	1599.16	13588.4	18806.8	0.19±0.08	0.09±0.03
G1	3318.81	1452.30	13626.2	18397.31	0.18±0.09	0.07±0.04
G2	2566.51	461.633	2040.50	5068.64	0.51±0.09	0.08±0.03
G3	8217.04	412.019	19258.5	27888.5	0.29±0.16	0.01±0.05
跨世代	2576.20	1664.72	11833.9	16075.82	0.16±0.03	0.28±0.02

世代	加性遗传效应方差σ_a²	母本及共同环境效应方差σ_d²	残差方差σ_e²	表型方差σ_p²	遗传力h²±se	母本和共同环境效应c²±se
G0	3618.22	1599.16	13588.4	18806.8	0.19±0.08	0.09±0.03
G1	3318.81	1452.30	13626.2	18397.31	0.18±0.09	0.07±0.04
G2	2566.51	461.633	2040.50	5068.64	0.51±0.09	0.08±0.03
G3	8217.04	412.019	19258.5	27888.5	0.29±0.16	0.01±0.05
跨世代	2576.20	1664.72	11833.9	16075.82	0.16±0.03	0.28±0.02

中国大菱鲆引进群体三代选育之后的收获体重遗传进展评估

Evaluation of Genetic Gain for Harvest Body Weight in Turbot (Scophthalmus Maximus, Linnaeus) After Three Generations

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世代	个体平均估计育种值/g	亲本估计育种值/g	选择差/g	遗传进展/g	遗传进展/%
G0	-24.9	20.7	45.6	-	-
G1	-14.7	-1.6	13.1	10.2	2.06
G2	53.1	25.2	-27.9	37.4	8.76
G3	53.4	-	-	0.3	0.04

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