Estimates of heritability and correlation for growth traits of Turbot (<i>Scophthalmus maximus</i> L.) under low temperature conditions

XU Liyong; WANG Weiji; KONG Jie; LUAN Sheng; HU Yulong; MA Yu

doi:10.1007/s13131-015-0616-9

大菱鲆低温生长遗传参数及相关的估计

doi: 10.1007/s13131-015-0616-9

1.
Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China;Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
2.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
3.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
4.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China

基金项目: The National High Technology Research and Development Program of China under contract No. 2012AA10A408-7; the Spe-cial Funding for Basic Scientific Research of Yellow Sea Fisheries Research Institute under contract No. 2010-cb-04.

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- 收稿日期: 2013-12-11
- 修回日期: 2014-03-21

Estimates of heritability and correlation for growth traits of Turbot (Scophthalmus maximus L.) under low temperature conditions

1.
Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China;Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
2.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
3.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
4.
Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China

摘要

摘要: 本研究的目的为评估大菱鲆在低温条件下生长性状的遗传力,并分析体重和体长之间的相关性.试验选取来自25个全同胞和半同胞家系的536尾大菱鲆进行低温生长试验.从大菱鲆233日龄到323日龄,在90天的生长周期中对个体每18天采集一次体重、体长数据.在个体动物模型中利用非求导约束最大似然法(DFREML)估计体重和体长的遗传力和这两个性状之间的相关性.结果表明,在10.5-12 ℃的低温条件下,25个家系的特定生长率为0.75±0.11～1.05±0.14.估计的体重和体长的遗传力分别为0.32±0.04和0.47±0.06.体重表现为中等遗传力(0.2-0.4),体长表现为高等遗传力(> 0.45),这表明以体重和体长作为选育性状是可行的.此外,体重和体长对于大规模的良种选育是很有潜力的.体重和体长之间的遗传相关和表型相关分别为0.95±0.01和0.91±0.01(P< 0.01).体重和体长之间的显著相关表明,在育种规划中通过间接选育可以取得很好效果的.
- 大菱鲆 /
- 低温 /
- 遗传力 /
- 遗传相关
Abstract: The objectives of this present research were to assess the heritability of growth traits under low temperature cond-itions in turbot (Scophthalmus maximus L.), and to analyze the correlation between body weight (BW) and body length (BL). There were 536 individuals from 25 full- and half-sib families involved in this study. During the entire 90-day period, which was initiated at 233 dph (day old) and ended at 323 dph, the individuals' BW and BL were weighed consecutively six times every 18 days. The heritability of BW and BL and the correlation between these two traits were estimated based on an individual animal model with the derivative-free restricted maximum likelihood (DFREML) method. These results showed that the specific growth rates (SGR) of 25 families was from 0.75±0.11 to 1.05±0.14 under water temperature of 10.5-12°C. In addition, the heritability of BW and BL estimated under low-temperature were 0.32±0.04 and 0.47±0.06, respectively. The BW had a medium heritability (0.2-0.4), and the BL had a high herita-bility (>0.45), which suggested that selection for increased weight and length was feasible. Moreover, there was pote-ntial for mass selection on growth. The genetic and phenotypic correlations between BW and BL were 0.95±0.01 and 0.91±0.01 (P < 0.01), respectively. A significant correlation between BW and BL showed that BL could be instead of BW for indirect selection, which could be effectively implemented in the breeding program.
- Scophthalmus maximus L. /
- low-temperature /
- heritability /
- correlation

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参考文献(28)

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文章访问数: 1605
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大菱鲆低温生长遗传参数及相关的估计

doi: 10.1007/s13131-015-0616-9

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Estimates of heritability and correlation for growth traits of Turbot (Scophthalmus maximus L.) under low temperature conditions

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