A1 Refereed original research article in a scientific journal

Sources of resistance to Fusarium head blight in VIR oat collection




AuthorsT Gagkaeva, O P Gavrilova, T Yli-Mattila, I G Loskutov

PublisherSpringer

Publication year2013

JournalEuphytica

Journal acronymEuphytica

Number in series3

Volume191

Issue3

First page 355

Last page364

Number of pages10

ISSN0014-2336

DOIhttps://doi.org/10.1007/s10681-013-0865-7


Abstract
Fusarium head blight (FBH) is a serious
disease of cultivated oats (Avena sativa L.). The
objective of this study was to screen a set of oat
genotypes from the VIR Avena sativa germplasm
collection for the FHB resistance. Of the 155 screened
genotypes 42 % belonged to both hulled and naked
cultivars, 55 % were landraces and the rest were
breeding lines. Screening nurseries were planted at
two locations: in the Northwestern Russia in
2007–2008 with artificial inoculation by F. sporotrichioides
strains and in the Russian Far East in 2009
(natural infections). The resistance data were based on
three different parameters: (a) percentage of grain
showing evidence of Fusarium damage, (b) the DNA
content of the trichothecene-producing Fusarium
species and (c) the trichothecene mycotoxin
accumulation; the sum of which permitted identification
of genotypes with multicomponent resistance to
FHB. The highest degrees of resistance were observed
in the naked cvs. Iymay (k-11014, China) and Numbat
(k-14851, Australia) and by the hulled cv. Kuromi (r-
11632, Japan). The most resistant landraces were the
hulled oats originating from the Asian region (k-2513,
k-6963, k-7766, and k-8479). Considerable similarity
was observed between the resistance reactions of oat
genotypes to the Fusarium disease under different
environmental conditions. The identified resistant
accessions may serve as crossing partners in oat
breeding efforts.



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