| LI Wenjia,LUAN Sheng,LUO Kun,SUI Juan,LU Xia,WANG Qingyin,KONG Jie.Genetic parameters for cold tolerance and body weight of Chinese fleshy prawn, Fenneropenaeus chinensis[J].Acta Oceanologica Sinica,2016,35(6):12-18 |
| 中国对虾(Fenneropenaeus chinensis)耐低温和生长性状的遗传参数估计 |
| Genetic parameters for cold tolerance and body weight of Chinese fleshy prawn, Fenneropenaeus chinensis |
| 投稿时间：2015-02-09 修订日期：2015-09-14 |
| DOI：10.1007/s13131-016-0845-6 |
| 中文关键词: 中国对虾 遗传力 体重 耐低温 遗传相关 |
| 英文关键词:Fenneropenaeus chinensis heritability body weight cold tolerance genetic correlation |
| 基金项目: |
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| 摘要点击次数: 1942 |
| 全文下载次数: 2100 |
| 中文摘要: |
| 中国对虾低温耐受性一直备受关注,因为低温耐受性差不仅大大缩短了中国对虾的生长期,而且会影响其越冬的安全性。本研究选用88个半同胞家系首次对中国对虾在低温下生长及耐低温性状的遗传力进行评估,以期为中国对虾良种选育提供数据支持。中国对虾在常温和低温下体重性状均为中等遗传力(分别为0.1580±0.3075和0.1320±0.0269),变异系数约为21%,均表明中国对虾体重性状具有较大的选育潜力。中国对虾耐低温性状的遗传力为0.0192±0.0235,与0无显著差异(P>0.05),为低等遗传力性状。相关分析表明中国对虾耐低温性状与体重性状间的遗传相关微弱。因此,我们需要进一步的研究来获得更为精准的中国对虾耐低温遗传力以及中国对虾各性状间的遗传相关系数,从而推动中国对虾良种选育进程。 |
| 英文摘要: |
| The inability of Fenneropenaeus chinensis to tolerate low temperatures is of major economic concern in temperate climates, as it reduces their growing season and leads to over-winter mortality. In this study, the heritability of body weight under low grow-out temperature and cold tolerance in F. chinensis were first investigated and estimated using 88 ful-sib families, which might provide crucial information in Chinese fleshy prawn breeding programs. The heritability for body weight under suitable and low temperature of F. chinensis were both moderate (0.158 0±0.307 5 and 0.132 0±0.026 9 respectively); the large coefficient of variation (approximately 21%) and moderate estimate of heritability for body weight indicated substantial potential for selective breeding. The heritability estimate for cold tolerance was low (0.019 2±0.023 5), and showed no significant differences from zero (P>0.05). A weak genetic correlation between cold tolerance and body weight was also estimated in the present study, also showing no significant differences from zero (P>0.05). Thus, more research needs to be conducted on the more accurate heritability estimate of cold tolerance and genetic correlations between traits in F. chinensis to further improve the achievement of breeding goals. |
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