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。
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.
作者
李明栋
李吉涛
史鲲鹏
何玉英
高保全
刘萍
李健
LI Mingdong;LI Jitao;SHI Kunpeng;HE Yuying;GAO Baoquan;LIU Ping;LI Jian(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)
出处
《渔业科学进展》
CSCD
北大核心
2021年第1期117-123,共7页
Progress in Fishery Sciences
基金
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。
关键词
脊尾白虾
耐盐碱性状
遗传力
遗传相关
Exopalaemon carinicauda
Saline-alkali tolerance
Heritability
Genetic correlations
