| 凡纳滨对虾多代选育群体生长和耐综合胁迫性状的配合力及杂种优势分析 |
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| 引用本文： | 王伦,王崇懿,刘建勇,傅学丽.凡纳滨对虾多代选育群体生长和耐综合胁迫性状的配合力及杂种优势分析[J].海洋学报,2022,44(4):65-73. |
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| 作者姓名： | 王伦 王崇懿 刘建勇 傅学丽 |
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| 作者单位： | 广东海洋大学 水产学院，广东 湛江 524088 |
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| 基金项目： | 国家重点研发计划重点专项2020年度项目（SQ2020YFD090053-05）； |
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| 摘 要： | 为筛选凡纳滨对虾(Litopenaeus vannamei)最佳的交配组合方式,以5个不同遗传背景的凡纳滨对虾群体为亲本,经交配构建12个组合F1代.利用ASReml4软件估计凡纳滨对虾12个组合105日龄的生长和耐综合胁迫(高盐(35)、低pH(6±0.1)与高氨氮(70?mg/L)共同胁迫)性状的一般配合力(GCA...
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| 关 键 词： | 凡纳滨对虾 生长性状 耐综合胁迫 配合力 杂种优势 |
| 收稿时间： | 2021-09-20 |
Analysis of combining ability and heterosis of growth and comprehensive stress tolerance traits of Litopenaeus vannamei multi-generation breeding population |
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| Wang Lun,Wang Chongyi,Liu Jianyong,Fu Xueli.Analysis of combining ability and heterosis of growth and comprehensive stress tolerance traits of Litopenaeus vannamei multi-generation breeding population[J].Acta Oceanologica Sinica (in Chinese),2022,44(4):65-73. |
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| Authors: | Wang Lun Wang Chongyi Liu Jianyong Fu Xueli |
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| Affiliation: | College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China |
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| Abstract: | This research aimed to screen the best mating combinations of Litopenaeus vannamei. Five populations of L. vannamei with different genetic backgrounds were used as parents, and 12 combinations of the F1 generation were constructed by mating. The ASReml4 software was used to estimate the general fitness (GCA) and specific fitness (SCA) for growth and tolerance to combined stress (high salt (35), low pH (6±0.1), and high ammonia nitrogen (70 mg/L) co-stress) traits of the 12 combinations of P105 in L. vannamei. The results showed that the SCA of the parents played a dominant role in the performance of offspring traits, with combinations K♀×K♂(0.35±0.25), GX♀×W♂(0.31±0.22) and GX♀×M♂(0.29±0.29) ranking high in SCA for body mass; combinations GX♀×GX♂(3.65±1.79), L♀×L♂(2.19±2.33) and W♀×GX♂(1.30±2.03) ranking high in SCA for tolerance to combined stress. The analysis of heterozygous dominance H showed that the crosses showed some heterozygous dominance for growth (body mass, body length, cephalothorax length, and full length of ventral segments) and stress tolerance traits, and the H for growth and stress tolerance traits of the six crosses GX♀×W♂, GX♀×K♂, GX♀×M♂, W♀×GX♂, K♀×GX♂ and K♀×M♂ were negative except for the combination GX♀×K♂ (0.10%?80.79% and 6.87%?42.86%), with the highest H for the combination GX♀×W♂ body mass (25.52%) and the higher H for the combination W♀×GX♂ tolerance to combined stress (41.72%). The study showed that the hybrid combination GX♀×W♂ had the highest SCA and H for body mass; the hybrid combination W♀×GX♂ had the highest SCA and higher H for tolerance to combined stress, which can be considered to enhance the application of the two combinations in matching crosses for growth and combined stress tolerance traits respectively. |
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