A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Sources of resistance to Fusarium head blight in VIR oat collection
Tekijät: T Gagkaeva, O P Gavrilova, T Yli-Mattila, I G Loskutov
Kustantaja: Springer
Julkaisuvuosi: 2013
Journal: Euphytica
Lehden akronyymi: Euphytica
Numero sarjassa: 3
Vuosikerta: 191
Numero: 3
Aloitussivu: 355
Lopetussivu: 364
Sivujen määrä: 10
ISSN: 0014-2336
DOI: https://doi.org/10.1007/s10681-013-0865-7
Tiivistelmä
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.
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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