| 大菱鲆低温生长遗传参数及相关的估计 |
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| 作者姓名： | XU Liyong WANG Weiji KONG Jie LUAN Sheng HU Yulong MA Yu |
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| 作者单位： | 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,Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China,Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China,Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China,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,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 |
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| 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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| 摘 要： | The objectives of this present research were to assess the heritability of growth traits under low temperature conditions 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 heritability(0.45), which suggested that selection for increased weight and length was feasible. Moreover, there was potential 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.
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| 关 键 词： | 大菱鲆 低温 遗传力 遗传相关 |
| 收稿时间： | 2013/12/11 0:00:00 |
| 修稿时间： | 2014/3/21 0:00:00 |
Estimates of heritability and correlation for growth traits of Turbot (Scophthalmus maximus L.) under low temperature conditions |
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| XU Liyong,WANG Weiji,KONG Jie,LUAN Sheng,HU Yulong,MA Yu.Estimates of heritability and correlation for growth traits of Turbot (Scophthalmus maximus L.) under low temperature conditions[J].Acta Oceanologica Sinica,2015,34(2):63-67. |
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| Authors: | XU Liyong WANG Weiji KONG Jie LUAN Sheng HU Yulong and MA Yu |
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| Institution: | 1. Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
2. Key Laboratory of Genetic Resources and Breeding Laboratory, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China |
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| 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. |
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| Keywords: | Scophthalmus maximus L low-temperature heritability correlation |
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