Identification of QTLs on chromosome 1B for grain quality traits in bread wheat (Triticum aestivum L.)

Shahzad M.; Khan S. H.; Khan A. S.; Sajjad M.; Rehman A.; Khan A. I.

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Identification of QTLs on chromosome 1B for grain quality traits in bread wheat (Triticum aestivum L.)

机译：面包小麦（Triticum aestivum L.）的1B染色体QTLs鉴定其籽粒品质性状

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The present study was designed considering the importance of grain quality traits, genetic diversity and marker-trait association analysis in wheat. A significant amount of genetic diversity was found for various seed traits though the genotypes included in the study were found structured. The extent of polymorphism was high with a range of 2-13 alleles and average of 6.5 alleles per locus. Population structure was detected with 30 unlinked SSRs that divided the population of 92 genotypes in three sub-populations. Extensive LD extent was found on chromosome 1B with 42 SSRs specific for 1B chromosome. Marker-trait associations were determined using mixed linear model, where population structure and kinship calculated on the basis of unlinked markers were covariated with 1B specific markers and traits data. Eight QTLs for five traits including protein, gluten contents, test weight bread and chapati making quality. Protein content, test weight, bread quality and Glu-B1 were found significantly associated with primers WMC419 (32 cM); WMC128 (30 cM), WMC419 (32 cM); WMC818 (17 cM) and WMC416 (44 cM), respectively.

机译：设计本研究时考虑了小麦品质性状，遗传多样性和标记性状关联分析的重要性。尽管发现该研究中包括的基因型是结构化的，但发现了各种种子性状的大量遗传多样性。多态性的程度很高，每个基因座范围为2-13个等位基因，平均为6.5个等位基因。用30个未链接的SSR检测了种群结构，将SSR的92个基因型分为三个亚群。在1B染色体上发现了广泛的LD范围，其中42个SSR对1B染色体具有特异性。使用混合线性模型确定标记-性状关联，其中基于非链接标记计算的种群结构和亲属与1B特定标记和性状数据共变量。八个QTL，涉及五个特性，包括蛋白质，面筋含量，容重面包和薄饼制作质量。发现蛋白质含量，重量，面包质量和Glu-B1与引物WMC419（32 cM）显着相关。 WMC128（30 cM），WMC419（32 cM）; WMC818（17 cM）和WMC416（44 cM）。

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来源
《Cytology and genetics》 |2016年第2期|89-95|共7页
作者
Shahzad M.; Khan S. H.; Khan A. S.; Sajjad M.; Rehman A.; Khan A. I.;
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作者单位

Univ Agr Faisalabad, Fac Agr, Dept Plant Breeding & Genet, Faisalabad, Pakistan;

Univ Agr Faisalabad, CABB, Faisalabad, Pakistan;

Univ Agr Faisalabad, Fac Agr, Dept Plant Breeding & Genet, Faisalabad, Pakistan;

COMSATS Inst Informat Technol, Dept Environm Sci, Vehari, Pakistan;

Ayub Agr Res Inst, Faisalabad, Pakistan;

Univ Agr Faisalabad, Fac Agr, Dept Plant Breeding & Genet, Faisalabad, Pakistan;

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正文语种 eng
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关键词
association mapping; linkage disequilibrium; population structure; quality traits; wheat;

机译：关联映射;连锁不平衡;种群结构;质量性状;小麦;

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5. Identification of Quantitative Trait Loci (Qtl) for Resistance to Soil-Borne Pathogens Fusarium culmorum and Heterodera filipjevi in Wheat (Triticum aestivum L.) [D] . Thompson, Yvonne Alexandria. 2018

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6. QTL mapping for some grain traits in bread wheat (Triticum aestivum L.) [O] . Supriya Kumari, Vandana Jaiswal, Vinod Kumar Mishra, 2018

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7. Association between grain yield, grain quality and morpho-physiological traits along ten cycles of recurrent selection in bread wheat (Triticum aestivum L.) [O] . Maich, R.H., Steffolani, M.E., Di Rienzo, J.A., 2017

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Identification of QTLs on chromosome 1B for grain quality traits in bread wheat (Triticum aestivum L.)

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