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Xianchun Xia

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Xianchun Xia
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Xianchun Xia
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0000-0003-2071-197X

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2017 - 201932020 - 20212
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Author: Jindong Liu × AGROVOC: SINGLE NUCLEOTIDE POLYMORPHISM ×

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Now showing 1 - 5 of 5
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    QTL mapping of drought tolerance at germination stage in wheat using the 50 K SNP array
    (Cambridge University Press, 2021) Yi Ren; Jindong Liu; Jianxin Zhang; Dreisigacker, S.; Xianchun Xia; Hongwei Geng
    Publication
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    Genome-wide association analysis of Fusarium head blight resistance in Chinese elite wheat lines
    (Frontiers, 2020) Zhanwang Zhu; Ling Chen; Wei Zhang; Lijun Yang; Weiwei Zhu; Junhui Li; Yike Liu; Hanwen Tong; Luping Fu; Jindong Liu; Rasheed, A.; Xianchun Xia; He Zhonghu; Yuanfeng Hao; Chunbao Gao
    Publication
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    Genome-wide association mapping of vitamins B1 and B2 in common wheat
    (Elsevier, 2018) Jieyun Li; Jindong Liu; Weie Wen; Pingzhi Zhang; Yingxiu Wan; Xianchun Xia; Zhang, Y.; He Zhonghu
    Vitamin B is essential for maintaining normal life activities in humans and animals who have to intake the microelement from the outside, especially from cereal products. In the present study 166 Chinese and foreign wheat cultivars planted in two environments were characterized for variation in vitamin B1 and B2 contents. A genome-wide association study (GWAS) using the wheat 90 K SNP assay identified 17 loci for vitamin B1 and 7 for vitamin B2 contents. Linear regression analysis showed a significantly positive correlation of the number of favorable alleles with vitamin B1 and B2 contents. Marker-trait associations (MTAs) at IWB43809 (6AS, 0 cM) and IWB69903 (6AS, 13 cM) were new and stable, and significantly associated with vitamin B1 content across two environments. The loci identified in this study and associated SNP markers could be used for improvement of vitamin B1 and B2 contents to obtain superior quality along with grain yield in wheat.
    Publication
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    Genome-wide association mapping of black point reaction in common wheat (Triticum aestivum L.)
    (BioMed Central, 2017) Jindong Liu; He Zhonghu; Rasheed, A.; Weie Wen; Yan Jun; Pingzhi Zhang; Yingxiu Wan; Yong Zhang; Chaojie Xie; Xianchun Xia
    Black point is a serious threat to wheat production and can be managed by host resistance. Marker-assisted selection (MAS) has the potential to accelerate genetic improvement of black point resistance in wheat breeding. We performed a genome-wide association study (GWAS) using the high-density wheat 90 K and 660 K single nucleotide polymorphism (SNP) assays to better understand the genetic basis of black point resistance and identify associated molecular markers.
    Publication
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    A high-density consensus map of common wheat integrating four mapping populations scanned by the 90k SNP Array
    (Frontiers, 2017) Weie Wen; He Zhonghu; Fengmei Gao; Hui Jin; Jindong Liu; Shengnan Zhai; Yanying Qu; Xianchun Xia
    A high-density consensus map is a powerful tool for gene mapping, cloning and molecular marker-assisted selection in wheat breeding. The objective of this study was to construct a high-density, single nucleotide polymorphism (SNP)-based consensus map of common wheat (Triticum aestivum L.) by integrating genetic maps from four recombinant inbred line populations. The populations were each genotyped using the wheat 90K Infinium iSelect SNP assay. A total of 29,692 SNP markers were mapped on 21 linkage groups corresponding to 21 hexaploid wheat chromosomes, covering 2,906.86 cM, with an overall marker density of 10.21 markers/cM. Compared with the previous maps based on the wheat 90K SNP chip detected 22,736 (76.6%) of the SNPs with consistent chromosomal locations, whereas 1,974 (6.7%) showed different chromosomal locations, and 4,982 (16.8%) were newly mapped. Alignment of the present consensus map and the wheat expressed sequence tags (ESTs) Chromosome Bin Map enabled assignment of 1,221 SNP markers to specific chromosome bins and 819 ESTs were integrated into the consensus map. The marker orders of the consensus map were validated based on physical positions on the wheat genome with Spearman rank correlation coefficients ranging from 0.69 (4D) to 0.97 (1A, 4B, 5B, and 6A), and were also confirmed by comparison with genetic position on the previously 40K SNP consensus map with Spearman rank correlation coefficients ranging from 0.84 (6D) to 0.99 (6A). Chromosomal rearrangements reported previously were confirmed in the present consensus map and new putative rearrangements were identified. In addition, an integrated consensus map was developed through the combination of five published maps with ours, containing 52,607 molecular markers. The consensus map described here provided a high-density SNP marker map and a reliable order of SNPs, representing a step forward in mapping and validation of hromosomal locations of SNPs on the wheat 90K array. Moreover, it can be used as a reference for quantitative trait loci (QTL) mapping to facilitate exploitation of genes and QTL in wheat breeding.
    Publication