Genetic Analysis of Fusarium Head Blight Resistance in CIMMYT Bread Wheat Line C615 Using Traditional and Conditional QTL Mapping

Frontiers in Plant Science
Xin YiShunhe Cheng

Abstract

Fusarium head blight (FHB) is a destructive wheat disease present throughout the world, and host resistance is an effective and economical strategy used to control FHB. Lack of adequate resistance resource is still a main bottleneck for FHB genetics and wheat breeding research. The synthetic-derived bread wheat line C615, which does not carry the Fhb1 gene, is a promising source of FHB resistance for breeding. A population of 198 recombinant inbred lines (RILs) produced by crossing C615 with the susceptible cultivar Yangmai 13 was evaluated for FHB response using point and spray inoculations. As the disease phenotype is frequently complicated by other agronomic traits, we used both traditional and multivariate conditional QTL mapping approaches to investigate the genetic relationships (at the individual QTL level) between FHB resistance and plant height (PH), spike compactness (SC), and days to flowering (FD). A linkage map was constructed from 3,901 polymorphic SNP markers, which covered 2,549.2 cM. Traditional and conditional QTL mapping analyses found 13 and 22 QTL for FHB, respectively; 10 were identified by both methods. Among these 10, three QTL from C615 were detected in multiple years; these QTL were located on chromoso...Continue Reading

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Citations

Nov 14, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Thomas MiedanerTobias Würschum
Feb 23, 2020·Scientific Reports·Shree R PariyarFlorian M W Grundler
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Jul 1, 2020·International Journal of Molecular Sciences·Raman DhariwalHarpinder S Randhawa
Jun 11, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Haisheng YanZhengqiang Ma
Jul 5, 2021·The Plant Journal : for Cell and Molecular Biology·Mian Abdur Rehman ArifAndreas Börner

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Methods Mentioned

BETA
Genotyping
chip

Software Mentioned

MapChart
QGAStation
Joinmap
QTL Cartographer
GenomeStudio
SAS

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