In silico integration of quantitative trait loci for seed yield and yield-related traits in Brassica napus

Zhou, Qing-Hong, Fu, • Dong-Hui, Mason, Annaliese S., Zeng, Yong-Jun, Zhao, Chao-Xian and Huang, Ying-Jin (2014) In silico integration of quantitative trait loci for seed yield and yield-related traits in Brassica napus. Molecular Breeding, 33 4: 881-894. doi:10.1007/s11032-013-0002-2

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Author Zhou, Qing-Hong
Fu, • Dong-Hui
Mason, Annaliese S.
Zeng, Yong-Jun
Zhao, Chao-Xian
Huang, Ying-Jin
Title In silico integration of quantitative trait loci for seed yield and yield-related traits in Brassica napus
Journal name Molecular Breeding   Check publisher's open access policy
ISSN 1380-3743
Publication date 2014
Year available 2014
Sub-type Article (original research)
DOI 10.1007/s11032-013-0002-2
Open Access Status File (Author Post-print)
Volume 33
Issue 4
Start page 881
End page 894
Total pages 14
Place of publication Dordrecht, The Netherlands
Publisher Springer Netherlands
Collection year 2015
Language eng
Subject 1110 Nursing
1312 Molecular Biology
1102 Cardiovascular Medicine and Haematology
1311 Genetics
1305 Biotechnology
Abstract Mapping quantitative trait loci (QTLs) is a foundation for molecular marker-assisted selection and map-based gene cloning. During the past decade, numerous QTLs for seed yield (SY) and yield-related traits in Brassica napus L. have been identified. However, integration of these results in order to compare QTLs from different mapping populations has not been undertaken, due to the lack of common molecular markers between studies. Using previously reported Brassica rapa and Brassica oleracea genome sequences, we carried out in silico integration of 1,960 QTLs associated with 13 SY and yield-related traits from 15 B. napus mapping experiments over the last decade. A total of 736 SY and yield-related QTLs were mapped onto 283 loci in the A and C genomes of B. napus. These QTLs were unevenly distributed across the 19 B. napus chromosomes, with the most on chromosome A3 and the least on chromosome C6. Our integrated QTL map identified 142 loci where the conserved QTLs were detected and 25 multifunctional loci, mostly for the traits of flowering time (FT), plant height, 1,000-seed weight, maturity time and SY. These conserved QTLs and multifunctional loci may result from pleiotropism or clustered genes. At the same time, a total of 146 genes underlying the QTLs for FT and other yield-related traits were identified by comparative mapping with the Arabidopsis genome. These results facilitate the retrieval of B. napus SY and yield-related QTLs for research communities, increase the density of targeted QTL-linked markers, validate the existence of QTLs across different populations, and advance the fine mapping of genes.
Keyword Brassicanapus
In silico mapping
Mining of genes underlying the QTLs
Quantitative trait locus (QTL)
Seed yield and yield-related traits
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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