| 大口黑鲈2群体双列杂交子代的生长比较及通径分析 |
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| 引用本文： | 龚雅婷,傅建军,朱文彬,张林兵,王兰梅,强俊,郜灿,胡桂飞,洪斌,董在杰.大口黑鲈2群体双列杂交子代的生长比较及通径分析[J].上海海洋大学学报,2022,31(1):131-139. |
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| 作者姓名： | 龚雅婷 傅建军 朱文彬 张林兵 王兰梅 强俊 郜灿 胡桂飞 洪斌 董在杰 |
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| 作者单位： | 南京农业大学无锡渔业学院,中国水产科学研究院淡水渔业研究中心,中国水产科学研究院淡水渔业研究中心,安徽张林渔业有限公司,中国水产科学研究院淡水渔业研究中心,中国水产科学研究院淡水渔业研究中心,安徽张林渔业有限公司,铜陵市义安区水产管理站,铜陵市义安区水产管理站,南京农业大学无锡渔业学院;中国水产科学研究院淡水渔业研究中心;安徽张林渔业有限公司 |
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| 基金项目： | 农业农村部现代农业人才支撑计划项目(2016142)；财政部和农业农村部：国家现代农业产业技术体系建设专项(CARS-46) |
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| 摘 要： | 为了加快大口黑鲈(Micropterus salmoides)的良种更新,以引进的大口黑鲈美国群体(US)和国内养殖群体(YZ)为基础群体,开展完全双列杂交试验,获得USUS、USYZ、YZUS和YZYZ共4个配对组合,并对子代个体1龄的生长性能进行比较。研究结果显示:USYZ杂交子代在体质量、体长和绝对增重率方面具有显著性优势(P<0.05),变异系数也最高;2组杂交子代的生长性状均具有中亲优势,USYZ杂交子代的体质量、体长、全长、头长和体高均具有超亲杂种优势,且在生长性状方面优于YZUS组合。通径分析结果显示:子代的全长、体宽、体高和体质量间均呈极显著正相关(P<0.01);区别于USUS,在USYZ、YZUS和YZYZ中体宽对体质量的决定系数要高于体高对体质量的决定系数。基于群体交配设计,从杂交子代的生长性状方面分析最佳的杂交组合,以期为中国大口黑鲈养殖群体种质改良和新品种培育提供基础。
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| 关 键 词： | 大口黑鲈 生长性状 杂种优势 通径分析 |
| 收稿时间： | 2020/12/17 0:00:00 |
| 修稿时间： | 2021/5/21 0:00:00 |
Growth traits comparison and path analysis of two populations of largemouth bass (Micropterus salmoides) and their reciprocal hybrids |
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| GONG Yating,FU Jianjun,ZHU Wenbin,ZHANG Linbing,WANG Lanmei,QIANG Jun,GAO Can,HU Guifei,HONG Bin,DONG Zaijie.Growth traits comparison and path analysis of two populations of largemouth bass (Micropterus salmoides) and their reciprocal hybrids[J].Journal of Shanghai Ocean University,2022,31(1):131-139. |
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| Authors: | GONG Yating FU Jianjun ZHU Wenbin ZHANG Linbing WANG Lanmei QIANG Jun GAO Can HU Guifei HONG Bin DONG Zaijie |
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| Institution: | Wuxi Fisheries College,Nanjing Agricultural University,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Zhanglin Fieries,Tonglin,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Zhanglin Fieries,Tonglin,Fishery Management Station of Yian District, Tongling,Fishery Management Station of Yian District, Tongling,Wuxi Fisheries College,Nanjing Agricultural University;China;Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences;China;Zhanglin Fieries,Tonglin |
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| Abstract: | In order to accelerate the renewal of largemouth bass (Micropterus salmoides), a complete diallel crossing experiment was carried out using the introduced American population (US) and the domestic aquatic population (YZ) as the base population, and four paired combinations of USUS, USYZ, YZUS, and YZYZ were obtained, and the 1-age growth performance of their offspring were compared. The results indicated that USYZ had a significant heterosis (P<0.05) in body weight, standard length, and absolute weight gain rate, and consistently had the highest coefficient of variation. Meanwhile, two hybrid groups (USYZ, and YZUS) had median parental heterosis for all growth traits. The body weight, standard length, total length, head length and body height of the USYZ hybrids have supernatural hybrid heterosis and were higher than those traits of YZUS hybrids. Additionally, the results of the path analysis revealed a highly significant positive correlation between total length, body width, body height, and body weight of the offspring (P<0.01); different to USUS, the coefficient of determination for body weight via body width was higher than that via body height in USYZ, YZUS, and YZYZ. In this study, based on diallel cross mating design, we investigated the best mating group in terms of growth traits of hybrid offspring, aimed to provide a basis for genetic improvement and breeding of M. salmoides in practice. |
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| Keywords: | Micropterus salmoides growth trait heterosis path analysis |
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