Mapping of the heading date gene HdAey2280 in Aegilops tauschii

LIU Guo-xiang; ZHANG Li-chao; XIA Chuan; JIA Ji-zeng; ZHANG Jun-cheng; ZHANG Qiang; DONG Chun-hao

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Mapping of the heading date gene HdAey2280 in Aegilops tauschii

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An optimum heading date is essential for sustainable crop productivity and ensuring high yields. In the present study, F2:3 populations were generated by crossing an early-heading accession, Y2280, with a late-heading accession, Y2282. The heading dates of the F2 and F3 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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《农业科学学报（英文版）》 |2016年第12期|2719-2725|共7页
作者
LIU Guo-xiang; ZHANG Li-chao; XIA Chuan; JIA Ji-zeng; ZHANG Jun-cheng; ZHANG Qiang; DONG Chun-hao;
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Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

Key Laboratory of Crop Germplasm Resources and Utilization, Ministry of Agriculture/National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;

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Mapping of the heading date gene HdAey2280 in Aegilops tauschii

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