Plant Protect. Sci., 2012, 48(1):10-16 | DOI: 10.17221/44/2011-PPS
Effect of some factors on the incidence of choke (Epichloë typhina) in grass seed stands in the Czech Republic
- OSEVA Development and Research Ltd., Zubří, Czech Republic
Choke of grasses caused by Epichloë typhina occurred in 2008 and 2009 in more than 25% of grass seed stands of timothy (Phleum pratense and P. nodosum); a lower incidence was reported in orchard grass (Dactylis glomerata). A decline in disease incidence in 2010 was caused partly by a reduction in the total area of grasses grown for seed production and partly by a decrease of older grass seed stands. The incidence of choke in timothy varieties Odenwälder and Pampas was very high; they differed statistically from the other 24 grown cultivars. No difference was found among 21 varieties of orchard grass. The highest incidence of choke was observed in varieties Comer and Dolina (timothy) and Amera (orchard grass). The incidence of choke in cultivated varieties of Phleum spp. and D. glomerata was affected by stand age (the incidence of the disease in timothy was recorded in 13% of stands in the first cropping year and in 50% of stands in the fifth cropping year). Choke disease occurred in all regions where the species were grown for seed.
Keywords: Dactylis glomerata; Phleum pratense; Phleum nodosum; age; varieties; grass seed
Published: March 31, 2012 Show citation
References
- Cagaš B. (2008): Bude dusivá plísňovitost ohrožovat v budoucnu naše semenářské porosty trav? Pícninářské listy, 15: 13-14.
- Cagaš B. (2010): Choroby, škůdci, abionózy a ochrana proti nim. In: Cagaš B. a kol.: Trávy pěstované na semeno. Vydavatelství Ing. Petr Baštan, Olomouc: 207-235.
- Leuchtmann A., Schmidt D., Bush L.P. (2000): Different levels of protective alkaloids in grasses with stromaforming and seed-transmitted Epichloë/Neotyphodium endophytes. Journal of Chemical Ecology, 26: 1025-1036.
Go to original source... - Li C.J., Wang Z.F., Chen N., Nan Z.B. (2009): First report of choke disease caused by Epichloë typhina on orchardgrass (Dactylis glomerata) in China. Plant Disease 93: 673. Go to original source...
Go to PubMed... - Mühle E. (1971): Krankheiten und Schädlinge der Futtergräser. S. Hirzel Verlag, Leipzig.
- Pfender W.F., Alderman S.C. (1997): Choke disease of orchardgrass in Oregon. In: Young III W.C. (ed.): 1997 Seed Production Research at Oregon State University. USDA-ARS Cooperating: 41-42.
- Pfender W.F., Alderman S.C. (1998): 1998 Geographical Distribution and Severity of Orchardgrass Choke in the Willamette Valley. In: Young III W.C. (ed.): 1998 Seed Production Research at Oregon State University USDAARS Cooperating: 33-35.
- Pfender W.F., Alderman S.C. (2004): Prevalence of Orchardgrass Choke Disease, 1998-2003, and Estimated Regional Yield Loss. In: Young III W.C. (ed.): 2004 Seed Production Research at Oregon State University USDAARS Cooperating: 16-17.
- Raynal G. (1991): Libération des ascospores d'Epichloe typhina, agent de la quenouille du dactyle. Conséquences pour l'épidémiologie et la lutte. Fourrages, 127: 345-358.
- Shimanuki T., Sato T. (1983): Occurrence of the choke disease on timothy caused by Epichloë typhina (Pers ex Fr.) Tul. in Hokkaido and location of the endophytic mycelia with plant tissue. Research Bulletin of the Hokkaido National Agricultural Experiment Station, No. 183: 87-97.
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