| 黄瓜果刺大小遗传分析 |
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| 引用本文： | 狄胜强,李豪,栾倩倩,王丽娜,李强,任仲海.黄瓜果刺大小遗传分析[J].中国蔬菜,2018,1(6):31-38. |
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| 作者姓名： | 狄胜强 李豪 栾倩倩 王丽娜 李强 任仲海 |
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| 作者单位： | （山东农业大学园艺科学与工程学院，山东果蔬优质高效生产协同创新中心，农业部黄淮地区园艺作物生物学与种质创制重点实验室，作物生物学国家重点实验室，山东泰安 271018） |
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| 摘 要： | 以大果刺黄瓜自交系CNS5和小果刺黄瓜自交系RNS4为亲本,构建P_1、F_1、P_2、B_1、B_2和F_26世代群体,利用主基因+多基因混合遗传模型多世代联合分析法,对连续两季的黄瓜果刺大小的表型值(基座直径)进行遗传分析,以探究黄瓜果刺大小性状的遗传规律。结果表明,黄瓜果刺大小的遗传符合C-0模型,即加性-显性-上位性多基因混合遗传模型。多基因加性和显性效应均为正向,基因上位性效应累计为正向。2016~2017年连续两季F_2群体中多基因遗传率分别是79.21%和71.25%,相对较高,环境效应分别为20.79%和28.75%,影响较小。在基因定位策略上,选择高代回交群体效果会更好。
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| 关 键 词： | 黄瓜 果刺大小 主基因 多基因 遗传分析 |
Genetic Analysis of Fruit Spine Base Size in Cucumis sativus |
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| Institution: | （College of Horticultural Science and Engineering，Shandong Agricultural University，Shandong Collaborative Innovation Center of Fruit ＆ Vegetable Quality and Efficient Production，Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region，Ministry of Agriculture，State Key Laboratory of Crop Biology，Tai’an 271018，Shandong，China） |
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| Abstract: | In order to explore the genetic law of cucumbers fruit spine base size，this paper took 2 cucumber inbred lines CNS5 with large fruit spine base and RNS4 with small fruit spine base as parents to construct 6 generations：P1，F1，P2，B1，B2 and F2；and utilized the major gene + polygene mixed inheritance model to
analyze the phenotypic values of cucumber fruit spine base size．The results indicated that inheritance of cucumber fruit spine base size conforms to C-0 model，namely additivity-dominance-epistasis polygene model．Multi-gene additive，dominant and epistatic effects were all positive．Additionally，the polygene inheritabilities in F2 from 2016 and 2017 were 79.21% and 71.25%，respectively，which was relatively higher．The environmental effects in F2 was 20.79% and 28.75%，respectively，which had relatively smaller influence．Therefore，this study has provided a foundation for exploring genes related to fruit spine base size．As strategy for gene mapping，selecting high generation backcross populations will have better effect． |
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| Keywords: | Cucumber Fruit spine size Major gene Polygene Genetic analysis |
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