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A novel QTL conferring Fusarium crown rot resistance located on chromosome arm 6HL in barley

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Gao, S ORCID: 0000-0002-2176-6553, Zheng, Z, Hu, H ORCID: 0000-0003-4023-9537, Shi, H, Ma, J, Liu, Y, Wei, Y, Zheng, Y-L, Zhou, M ORCID: 0000-0003-3009-7854 and Liu, C 2019 , 'A novel QTL conferring Fusarium crown rot resistance located on chromosome arm 6HL in barley' , Frontiers in Plant Science, vol. 10, no. OCT , pp. 1-7 , doi: 10.3389/fpls.2019.01206.

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Abstract

Fusarium crown rot (FCR), caused primarily by Fusarium pseudograminearum, is a devastating disease for cereal production in semi-arid regions worldwide. To identify and characterize loci conferring FCR resistance, we assessed a landrace AWCS799 which is among the best lines identified from a systematic screening of more than 1,000 genotypes. Genetic control of its resistance was investigated by generating and analyzing two populations of recombinant inbred lines with AWCS799 as the common parent. One of the populations was used for QTL detection and the other for validation. A novel QTL, located on the long arm of chromosome 6H (designated as Qcrs.caf-6H), was consistently detected in each of the four FCR severity tests conducted against the mapping population. The QTL explained up to 28.3% of the phenotypic variance, and its effect was confirmed in the validation population. Significant interaction between this resistance locus and either plant height or heading date was not detected, further facilitating its manipulation in breeding programs.

Item Type: Article
Authors/Creators:Gao, S and Zheng, Z and Hu, H and Shi, H and Ma, J and Liu, Y and Wei, Y and Zheng, Y-L and Zhou, M and Liu, C
Keywords: barley, crown rot, Fusarium crown rot (FCR), Hordeum vulgare L., QTL, breeding, RIL population
Journal or Publication Title: Frontiers in Plant Science
Publisher: Frontiers Research Foundation
ISSN: 1664-462X
DOI / ID Number: 10.3389/fpls.2019.01206
Copyright Information:

Copyright 2019 Gao, Zheng, Hu, Shi, Ma, Liu, Wei, Zheng, Zhou and Liu. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

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