| 黄瓜种子休眠性的数量遗传分析 |
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| 引用本文： | 唐慧珣,司龙亭.黄瓜种子休眠性的数量遗传分析[J].园艺学报,2013,40(3):549-553. |
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| 作者姓名： | 唐慧珣 司龙亭 |
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| 作者单位： | 沈阳农业大学园艺学院，沈阳 110866 |
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| 基金项目： | 国家自然科学基金项目，辽宁省教育厅重点实验室基金项目 |
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| 摘 要： | 采用发芽率作为种子休眠性的参考性状，对黄瓜种子休眠性进行遗传分析。运用植物数量
性状主基因 + 多基因混合遗传模型多世代联合分析的方法对2 个稳定的黄瓜高代自交系M6（P1）与M87
（P2）杂交组合的P1、P2、F1、B1、B2 和F2 共6 个世代群体的种子休眠性进行了分析。结果表明：黄瓜
种子休眠性的遗传符合1 对加性–显性主基因 + 加性–显性–上位性多基因模型（D-0），在B1、B2 和
F2 这3 个家系世代，主基因遗传率分别为35.75%、44.60%、64.29%，多基因遗传率分别为13.89%、13.20%
和3.38%。环境方差占表型方差的比例分别为50.36%、42.20%、32.33%。黄瓜种子休眠的遗传体系中主
基因具有重要作用，环境方差占有较大比例，不适宜早代选择。
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| 关 键 词： | 黄瓜 种子休眠 主基因 + 多基因 数量遗传分析 |
Quantitative Genetic Analysis of Seed Dormancy in Cucumber |
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| TANG Hui-Xun,SI Long-Ting-.Quantitative Genetic Analysis of Seed Dormancy in Cucumber[J].Acta Horticulturae Sinica,2013,40(3):549-553. |
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| Authors: | TANG Hui-Xun SI Long-Ting- |
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| Institution: | 1.Institute of Respiratory Diseases, the First Affiliated Hospital, China Medical University, Shenyang 110001, China;2.Department of Respiratory Diseases, the 202th Hospital of PLA, Shenyang 110812, China. |
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| Abstract: | Seed dormancy was analysized in cucumber（Cucumis sativus L.）by rate of seed
germination. Inheritance of seed dormancy in the cross M6 × M87 was detected by applying the major gene
plus polygene model of quantitative traits to a joint analysis of multi-generations（P1，P2，F1，B1，B2 and
F2）. The results showed that seed dormancy in the cross M6 × M87 was controlled by one major gene with
additive-dominance effects plus polygene with additive-dominance-epistatic effects（D-0）. Heritability
values of the major gene in B1，B2 and F2 populations were estimated as 35.75%，44.60% and 64.29%，
while those of polygene were 13.89%，13.20% and 3.38%，respectively. The proportion of environmental
variance in phenotypic variance was 50.36%，42.20% and 32.33%，respectively. The environmental and
major gene factors had strong effects on seed dormancy in cucumber and it was not suitable for the
selection in early generation. |
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| Keywords: | cucumber seed dormancy major gene plus polygene quantitative genetic analysis |
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