Abstract
The effects of a PAV isolate of barley yellow dwarf virus inoculated to oats at four different growth stages were evaluated in a field trial in Sweden. Oats (cv. Stork) were artificially infested with bird cherry-oat aphids (Rhopalosiphum padi) carrying a local Swedish PAV-Sto isolate. Infection, especially in early growth stages, decreased yield of grain biomass and plant height, but increased the number of tillers and panicles per plant, compared to uninfected plants. There was no effect on 1000-kernel weight and grain volume weight. The results emphasize the importance of barley yellow dwarf virus infection, especially at early growth stages in affecting oat yields.
Zusammenfassung
Der Einfluss eines PAV-Isolats des Gerstengelbverzwergungsvirus auf Ertrag und Ertragsfaktoren des Hafers wurde an vier verschiedene Entwicklungsstadien in Feldversuchen in Schweden untersucht. Haferpflanzen (cv. Storck) wurden mit Hafer- oder Traubenkirschenläusen (Rhopalosiphum padi) besetzt, die ein lokales schwedisches PAV-sto-Isolat des Virus übertrugen. Eine Virusinfektion, insbesondere in den frühen Entwicklungsstadien des Hafers, reduzierte den Kornertrag und die Pflanzenhöhe, steigerte im Vergleich mit nicht infizierten Kontrollpflanzen aber die Anzahl der Bestockungstriebe und Rispen pro Pflanze. Tausendkorngewicht und Kornmasse wurden nicht beeinflusst. Die Ergebnisse unterstreichen die Bedeutung des Gerstengelbverzwergungsvirus im Haferanbau, insbesondere bei Frühinfektionen.
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Bisnieks, M., Persson, T., Eckersten, H. et al. The effects on yield and components of yield in oats infected with BYDV-PAV at different growth stages. J Plant Dis Prot 112, 521–528 (2005). https://doi.org/10.1007/BF03356149
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DOI: https://doi.org/10.1007/BF03356149