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Position: Home > Articles > Mapping of the heading date gene HdAey2280 in Aegilops tauschii Journal of Integrative Agriculture 2016,15 (12)

Mapping of the heading date gene HdAey2280 in Aegilops tauschii

作者：

Liu Guo-xiang;Zhang Li-chao;Xia Chuan;Jia Ji-zeng;Zhang Jun-cheng;Zhang Qiang;Dong Chun-hao;Kong Xiu-ying;Liu Xu

单位：

Chinese Acad Agr Sci, Inst Crop Sci, Minist Agr,Natl Key Facil Crop Gene Resources & G, Key Lab Crop Germplasm Resources & Utilizat, Beijing 100081, Peoples R China

关键词：

Aegilops tauschii;heading date;molecular markers;HdAey2280

摘要：

An optimum heading date is essential for sustainable crop productivity and ensuring high yields. In the present study, F-2:3, populations were generated by crossing an early-heading accession, Y2280, with a late-heading accession, Y2282. The heading dates of the F-2 and F-3 populations were investigated in a field study. Using publicly available simple sequence repeat (SSR) markers, the early heading date gene HdAey2280 was mapped onto Aegilops tauschii chromosome 7DS between the flanking markers wmc438 and barc126 at distances of 15 and 9.1 cM, respectively. Further analysis indicated that HdAey2280 is a novel heading date gene. New SSR markers were developed based on the Ae. tauschii draft genome sequence, resulting in four new markers that were linked to the heading date gene HdAey2280. The closest distance of these markers was 1.9 cM away from the gene. The results collected in this study will serve as a framework for map-based cloning and marker-assisted selection in wheat breeding programs in the future.

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Mapping of the heading date gene HdAey2280 in Aegilops tauschii

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