Journal für Kulturpflanzen - Journal of Cultivated Plants (2009) 61, 53-61

Antje Habekuß, Christine Riedel, Edgar Schliephake and Frank Ordon (2009)
Züchtung auf Resistenz gegen insektenübertragene Viren bei der Gerste - eine zunehmende Herausforderung vor dem Hintergrund des Klimawandels
[Breeding for resistance to insect-transmitted viruses in barley - an emerging challenge due to global warming]
Journal für Kulturpflanzen - Journal of Cultivated Plants 61 (2), 53-61
Abstract: Due to global warming longer periods of higher temperature in autumn and winter are expected which may result in an increasing importance of insect-transmitted viruses. Investigations carried out in Saxony-Anhalt from 1998 to 2008 on the incidence of Barley yellow dwarf virus (BYDV) and Wheat dwarf virus (WDV) revealed a clear relation between the number of infection days in autumn and the BYDV-attack in winter barley fields in the following spring. In additional experiments carried out in growth chambers under controlled conditions it turned out that 10°C is the minimum temperature for an efficient transmission of BYDV by Rhopalosiphum padi .
In order to enhance the level of resistance to BYDV, Ryd2 , Ryd3 and a QTL derived from the cultivar Post located on chromosome 2HL were combined using DH-lines and molecular markers. Concerning symptom expression and virus extinction first results indicate a reduction in those lines combining especially Ryd2 and Ryd3 . Concerning WDV extensive screening programmes were conducted, but tolerance was only detected in cv. Post . First results of genetic analysis using DH-lines give hint that this tolerance is inherited in a quantitative manner.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Database assignments for author(s): Antje Habekuss, Edgar Schliephake, Frank Ordon

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
population dynamics/ epidemiology

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Barley yellow dwarf viruses	Barley (Hordeum vulgare)	Germany
	Wheat dwarf virus	Barley (Hordeum vulgare)	Germany