| 脊尾白虾耐盐碱性状遗传力和遗传相关的估计 |
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| 作者姓名： | 李明栋 李吉涛 史鲲鹏 何玉英 高保全 刘萍 李健 |
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| 作者单位： | 上海海洋大学水产科学国家级实验教学示范中心 上海201306;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 青岛 266071;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 青岛 266071 |
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| 基金项目： | 国家重点研发计划课题(2018YFD0901302);现代农业产业技术体系(CARS-48);山东省泰山产业领军人才工程项目(LNJY2015002);中国水产科学研究院基本科研业务费项目(2019ZD0603)共同资助。 |
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| 摘 要： | 应用数量遗传学原理和全同胞组内相关法估计50日龄脊尾白虾(Exopalaemon carinicauda)耐盐碱性状的遗传力和遗传相关。采用定向交尾方式构建脊尾白虾50个全同胞家系(包括42个半同胞家系),利用SPSS软件的一般线性模型(GLM)对各家系盐碱胁迫的存活时间进行方差分析,估计脊尾白虾耐盐碱性状的遗传力和遗传相关。结果显示,脊尾白虾耐盐碱性状的遗传力为0.18~0.60,其估计值未达到显著水平,属于中等遗传力;50日龄脊尾白虾耐盐碱性状与体长的遗传相关和表型相关分别为-0.401和0.127,耐盐碱性状和体重的遗传相关和表型相关分别为-0.196和0.033,耐盐碱性状与体长、体重的相关程度较低。本研究表明,选择育种对于脊尾白虾耐盐碱性状的改良具有较大潜力,且以耐盐碱性状为选育指标,不会对脊尾白虾体长和体重产生显著影响。
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| 关 键 词： | 脊尾白虾 耐盐碱性状 遗传力 遗传相关 |
| 收稿时间： | 2020/2/21 0:00:00 |
| 修稿时间： | 2020/3/5 0:00:00 |
Estimation of heritability and genetic correlation of saline-alkali tolerance in Exopalaemon carinicauda |
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| Authors: | LI Mingdong LI Jitao SHI Kunpeng HE Yuying GAO Baoquan LIU Ping LI Jian |
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| Institution: | National Experimental Teaching Demonstration Center of Aquatic Science, Shanghai Ocean University, Shanghai 201306; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071 |
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| Abstract: | Exopalaemon carinicauda is a widely-distributed species.Its wide temperature and salinity tolerances,fast growth,and strong adaptability have enabled it to become a characteristic breeding species in coastal areas of China.In China,there are around 100 million acres of saline-alkali water with breeding potential.Saline-alkali water has a high-pH,high-carbonate alkalinity,and complex ion composition,which hinders the full development and utilization of resources.Due to its strong environmental adaptability,E.carinicauda has been successfully cultivated in coastal saline-alkali waters in recent years.It is urgent to improve its germplasm for saline-alkali aquaculture production of this species.In this study,quantitative genetics principles and intra-sibling correlation methods were used to estimate the heritability and heredity-related parameters of saline-alkali stress in 50-day-old E.carinicauda.Fifty full-sib families(including 42 half-sib families)were constructed by directional mating.The survival time under saline-alkali stress was analyzed with a general linear model(GLM)using SPSS software,and the genetic correlation with and heritability of saline-alkali tolerance were estimated.The results showed that the heritability of saline-alkali tolerance was 0.18~0.60,and the estimated value was not significant.The genetic correlation and phenotypic correlation between saline-alkali tolerance and body length were -0.401 and 0.127,respectively.The genetic and phenotypic correlations between saline-alkali tolerance and body weight were -0.196 and 0.033,respectively.The results of this study showed that selective breeding has great potential to improve the saline-alkali tolerance of E.carinicauda,and taking the saline-alkali tolerance as the breeding index would not significantly affect the body length and weight of E.carinicauda. |
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| Keywords: | Exopalaemon carinicauda Saline-alkali tolerance Heritability Genetic correlations |
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