Marker regression mapping of QTL controlling flowering time and plant height in a spring barley (Hordeum vulgare L) cross
Marker regression mapping of QTL controlling flowering time and plant height in a spring barley (Hordeum vulgare L) cross
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DOI：
10.1038/hdy.1996.109
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发表时间：
1996-07-01
期刊：
影响因子：
3.8
通讯作者：
Kearsey, M
中科院分区：
文献类型：
--
作者：
Bezant, J;Laurie, D;Kearsey, M
利用2个春大麦品种（Blenheim × Kym）杂交的99个双单倍体株系构建了RFLP图谱，并利用标记回归方法定位了控制抽穗期和株高的数量性状基因座（QTL）。鉴定出3个影响株高的QTL。影响最大的是来自Blenheim中存在的3（3H）L染色体上的密集矮秆基因。发现另外两种效应，一种对7（5H）L，一种对1（7H）L。denso基因对穗发芽时间也有重要影响。然而，还鉴定了8个额外的穗出苗QTL。其中两个是在以前确定的地区进行的Sh和Sh2春化反应基因，这表明在这些基因的等位基因变异可能会影响穗发芽时间在春大麦杂交。与相关物种的图谱比较显示标记和基因的保守性和共线性。
An RFLP map was constructed from 99 doubled haploid lines of a cross between two spring barley varieties (Blenheim x Kym) and used to map quantative trait loci (QTL) controlling ear emergence time and plant height using a marker-regression approach. Three QTL affecting plant height were identified. The largest effect was from the dense dwarfing gene, present in Blenheim, on chromosome 3(3H)L. Two other effects were found, one on 7(5H)L and one on 1(7H)L. The denso gene also had a major effect on ear emergence time. However, eight additional QTL for ear emergence were also identified. Two of these were in regions previously identified as carrying the Sh and Sh2 vernalization response genes, suggesting that allelic variation at these genes may affect ear emergence time in spring barley crosses. Comparisons with maps of related species show conservation and collinearity of markers and genes.