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A genetic analysis of the resistance in barley to Soil-borne wheat mosaic virus.

Authors
  • Okada, Kaori1
  • Kato, Tsuneo1
  • Oikawa, Tetsuo2
  • Komatsuda, Takao2, 3
  • Namai, Kiyoshi1
  • 1 Tochigi Prefectural Agricultural Experiment Station, Utsunomiya, Tochigi 320-0002, Japan. , (Japan)
  • 2 Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8518, Japan. , (Japan)
  • 3 Graduate School of Horticulture, Chiba University, Matsudo, Chiba 271-8510, Japan. , (Japan)
Type
Published Article
Journal
Breeding science
Publication Date
Dec 01, 2020
Volume
70
Issue
5
Pages
617–622
Identifiers
DOI: 10.1270/jsbbs.20071
PMID: 33603558
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Soil-borne wheat mosaic virus (SBWMV), a ubiquitous pathogen commonly encountered in temperate regions of the Northern hemisphere, can damage a number of economically important cereal crops, notably wheat and barley. Given that the plasmodiophorid cercozoan Polymyxa graminis, which acts as the vector of SBWMV, can survive in the soil for many decades, the only feasible control measure is the deployment of resistant cultivars. Here, a quantitative trait locus (QTL) approach was taken to characterize the genetic basis of the SBWMV resistance exhibited by the barley cultivar Haruna Nijo. The analysis revealed that between 33% and 41% of the variation for the measure chosen to represent resistance was under the control of a gene(s) mapping to a region at the distal end of the short arm of chromosome 2H. In contrast to most of the genes known to encode resistance to soil-borne mosaic viruses, the allele specifying resistance was dominant over those present in a susceptible genotype. Copyright © 2020 by JAPANESE SOCIETY OF BREEDING.

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