文章摘要
脊尾白虾耐盐碱性状遗传力和遗传相关的估计*
Estimation of Heritability and Genetic correlation of the Tolerance to Saline-alkali in Exopalaemon carinicauda
投稿时间:2020-02-21  修订日期:2020-03-05
DOI:
中文关键词: 脊尾白虾(Exopalaemon carinicauda)  耐盐碱性状  遗传力  遗传相关
英文关键词: Exopalaemon carinicauda  Tolerance to saline-alkali  Heritability  Genetic correlations
基金项目:
作者单位E-mail
李明栋 上海海洋大学水产与生命学院 上海 lmdanyany@163.com 
李吉涛 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 lijt@ysfri.ac.cn 
史鲲鹏 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  
何玉英 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  
高保全 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  
刘萍 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  
李健 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  
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中文摘要:
      应用数量遗传学原理和全同胞组内相关法估计50日龄脊尾白虾耐盐碱性状的遗传力和遗传相关参数。采用定向交尾方式构建脊尾白虾50个全同胞家系(其中包括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,估计了脊尾白虾耐盐碱性状的遗传力和遗传相关。结果表明,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。本研究结果表明,选择育种对于脊尾白虾耐盐碱性状的改良具有较大潜力,并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。
英文摘要:
      Exopalaemon carinicauda is a wide-temperature, wide-salt and widely-distributed species, which has the advantages of fast growth and strong adaptability, and has now become a characteristic breeding species in China"s coastal areas. The area of saline-alkali water with breeding potential in China can reach 100 million acres. Saline-alkali water has the characteristics of high-pH, high-carbonate alkalinity, and complex ion composition, which hinders the full development and utilization of saline-alkali water resources. Due to its strong environmental adaptability, E. carinicauda have successfully cultivated in coastal saline-alkali waters in recent years. It is urgent to improve its germplasm for its saline-alkali aquaculture production. 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-days-old E. carinicauda. 50 full-sib families (including 42 half-sib families) were constructed by directional mating. The survival time of saline-alkali stress in 50 days stages families was analyzed by the general linear model (GLM) of SPSS software, and the heritability and genetic correlation 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 correlation and phenotypic correlation between saline-alkali tolerance and body weight were -0.196 and 0.033, respectively. The results of this study showed that selective breeding had great potential to improve the saline-alkali tolerance of the 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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