| 梁世浩，郭晋杰，贾晓艳，等.基于SSR标记和骨干自交系的外引玉米自交系杂种优势群划分[J].广东农业科学,2015,42(7):-127 |
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基于SSR标记和骨干自交系的外引玉米自交系杂种优势群划分 |
| Heterotic grouping of exotic maize inbred lines by SSR markers and elite maize inbred lines |
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| DOI： |
| 中文关键词: ：外引自交系 SSR 标记 杂种优势群 遗传多样性 |
| 英文关键词: exotic inbred line SSR marker heterotic group genetic diversity |
| 基金项目: |
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| 摘要点击次数: 1363 |
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| 中文摘要: |
| ：研究玉米杂种优势群及其模式对于提高育种效率及预见性具有重要意义。利用 40 个 SSR 核心标
记、6 份骨干自交系和 49 份外引自交系进行杂种优势群划分和遗传多样性分析，结果表明，40 个 SSR 标记
在 49 份外引自交系中共检测到242 个等位变异，每个标记检测到 4~11个等位基因、平均 6.05 个，PIC 变化范
围 0.3224（phi072）~0.8376（bnlg2235）、平均为 0.6347，基因多样性趋势与 PIC 基本一致，变化范围 0.3640
（phi072）~0.8538（bnlg2235）、平均为0.6767。结合骨干自交系系谱的聚类与基于混合模型的群体结构分析结果，
将外引材料划分为唐四平头、瑞德、改良瑞德、兰卡斯特 4 个类群。 |
| 英文摘要: |
| It is significant for improving the efficiency and predictability of maize breeding to study heterotic
grouping of maize. In this study，40 simple sequence repeat（SSR）primers and 6 elite maize inbred lines were used to
detect genetic variation and heterotic grouping among 49 exotic inbred lines. A total of 242 alleles was detected with a
range between 4 to 11 and an average of 6.05 alleles per locus. The PIC and gene diversity showed the similar trend，
varied from 0.3224（phi072）to 0.8397（bnlg2235）and 0.3640（phi072）-0.8538（bnlg2235），the averages were
0.6347 and 0.6767. Inbred lines were clustered into 4 groups referring to the pedigree of leading self lines，including
Tangsipingtou，Reid，Improved Reid and Lancaster group. |
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