萝卜抽薹时间的QTLs定位及分析

doi:10.16178/j.issn.0528-9017.20200618

摘要/Abstract

摘要： 以抽薹时间差异显著的野生型萝卜YS105和栽培型萝卜ZP85为亲本构建F₁和F₂群体。利用筛选的多态性SSR引物对F₂群体各单株进行鉴定并完成SSR遗传图谱的构建。运用MapQTL 4.0软件对萝卜F₂群体抽薹时间进行QTLs定位和分析。结果表明,构建的SSR遗传图谱包括114个SSR标记,9个连锁群,覆盖基因组长度894.9 cM, 平均标记间距为7.85 cM。共检测到4个与萝卜抽薹时间相关的QTLs,分布于LG5、LG6、LG8和LG9连锁群上,LOD值10.18~18.11,可解释8.4%~21.6%的表型变异率。其中贡献率≥10%的QTLs位点3个,贡献率≥20% 的QTLs位点1个。

关键词: 萝卜, 抽薹时间, 数量性状位点, 定位

中图分类号:

S631.1

曲丽君, 张见, 邢军, 李欣屹. 萝卜抽薹时间的QTLs定位及分析[J]. 浙江农业科学, 2020, 61(6): 1093-1097.

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