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Utilization of a Wheat55K SNP Array for Mapping of Major QTL for Temporal Expression of the Tiller Number

Overview of attention for article published in Frontiers in Plant Science, March 2018
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Title
Utilization of a Wheat55K SNP Array for Mapping of Major QTL for Temporal Expression of the Tiller Number
Published in
Frontiers in Plant Science, March 2018
DOI 10.3389/fpls.2018.00333
Pubmed ID
Authors

Tianheng Ren, Yangshan Hu, Yingzi Tang, Chunsheng Li, Benju Yan, Zhenglong Ren, Feiquan Tan, Zongxiang Tang, Shulan Fu, Zhi Li

Abstract

Maximum tiller number and productive tiller number are important traits for wheat grain yield, but research involving the temporal expression of tiller number at different quantitative trait loci (QTL) levels is limited. In the present study, a population set of 371 recombined inbred lines derived from a cross between Chuan-Nong18 and T1208 was used to construct a high-density genetic map using a Wheat55K SNP Array and to perform dynamic QTL analysis of the tiller number at four growth stages. A high-density genetic map containing 11,583 SNP markers and 59 SSR markers that spanned 4,513.95 cM and was distributed across 21 wheat chromosomes was constructed. A total of 28 single environmental QTL were identified in the recombined inbred lines population, and among these, seven QTL were stable and used for multi-environmental and dynamic analysis. These QTL were mapped to chromosomes 2D, 4A, 4D, 5A, 5D, and 7D, respectively. Each QTL explained 1.63-21.22% of the observed phenotypic variation, with an additive effect from -20.51 to 11.59. Dynamic analysis showed thatcqTN-2D.2can be detected at four growth stages of tillering, explaining 4.92-17.16% of the observed phenotypic variations and spanning 13.71 Mb (AX-109283238-AX-110544009: 82189047-95895626) according to the physical location of the flanking markers. The effects of the stable QTL were validated in the recombined inbred lines population, and the beneficial alleles could be utilized in future marker-assisted selection. Several candidate genes for MTN and PTN were predicted. The results provide a better understanding of the QTL selectively expressing the control of tiller number and will facilitate future map-based cloning. 9.17% SNP markers showed best hits to the Chinese Spring contigs. It was indicated that Wheat55K Array was efficient and valid to construct a high-density wheat genetic map.

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Geographical breakdown

Country Count As %
Unknown 36 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 6 17%
Student > Ph. D. Student 4 11%
Student > Postgraduate 2 6%
Researcher 2 6%
Lecturer 1 3%
Other 1 3%
Unknown 20 56%
Readers by discipline Count As %
Agricultural and Biological Sciences 9 25%
Nursing and Health Professions 2 6%
Biochemistry, Genetics and Molecular Biology 2 6%
Unknown 23 64%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 20 April 2018.
All research outputs
#17,937,475
of 23,031,582 outputs
Outputs from Frontiers in Plant Science
#12,251
of 20,570 outputs
Outputs of similar age
#242,795
of 333,794 outputs
Outputs of similar age from Frontiers in Plant Science
#338
of 481 outputs
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