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

Citation

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, A novel QTL conferring Fusarium crown rot resistance located on chromosome arm 6HL in barley, Frontiers in Plant Science, 10, (OCT) Article 1206. ISSN 1664-462X (2019) [Refereed Article]


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DOI: doi:10.3389/fpls.2019.01206

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 Details

Item Type:Refereed Article
Keywords:barley, crown rot, Fusarium crown rot (FCR), Hordeum vulgare L., QTL, breeding, RIL population
Research Division:Agricultural and Veterinary Sciences
Research Group:Crop and Pasture Production
Research Field:Agro-ecosystem Function and Prediction
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Barley
UTAS Author:Gao, S (Mr Shang Gao)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:136238
Year Published:2019
Deposited By:Zoology
Deposited On:2019-12-09
Last Modified:2020-01-07
Downloads:0

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