University Of Tasmania
145366 - Delineating a locus conferring Fusarium crown rot resistance on chromosome arm 1HL in barley.pdf (603.77 kB)
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Delineating a locus conferring Fusarium crown rot resistance on chromosome arm 1HL in barley by developing and analysing a large population derived from near isogenic lines

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posted on 2023-05-21, 00:49 authored by Gao, S, Zheng, Z, Hu, H, Jiang, Y, Liu, M, Stiller, J, Meixue ZhouMeixue Zhou, Liu, C
Fusarium crown rot (FCR), a chronic and severe disease caused by various Fusarium species, is prevalent in semi-arid cropping regions worldwide. One of the major QTL conferring FCR resistance was detected on chromosome arm 1HL (Qcrs.cpi-1H) in barley. To develop markers that can be reliably used to incorporate the resistance locus into breeding programs, we developed and assessed a near-isogenic line-derived population consisting of 1180 recombinant inbred lines targeting the locus. Using this population, we delineated Qcrs.cpi-1H into an interval of 0.4 cM covering a physical length of about 487 kb. Six markers co-segregating with this locus were generated. Co-linearity for genes located in this interval between the genome of barley and those of either rice or Brachypodium distachyon is poor. Three genes with non-synonymous variations between the resistant and susceptible lines were identified within the interval. The results reported in this study not only provide markers for integrating Qcrs.cpi-1H into breeding programs, but also form a solid foundation for cloning the causal gene(s) underlying this locus.


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Crop Journal










Tasmanian Institute of Agriculture (TIA)


Elsevier Science Bv

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© 2020 Crop Science Society of China and Institute of Crop Science, CAAS. Production andAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license (

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