Phytoparasitica (2013) 41, 449-456

Fatima Haddadi, Aïssa Mokabli and Richard W. Smiley (2013)
Characterization of virulence reactions for Heterodera avenae populations from two localities in Algeria
Phytoparasitica 41 (4), 449-456
Abstract: Heterodera avenae is widely distributed in areas where most cereal crops are produced in Algeria. However, the virulence of the Algerian populations of this nematode on individual cereal species and cultivars has not been well documented. The virulence of H. avenae populations from Tiaret and from Oued Smar were tested under natural outdoor conditions and in an in vitro test to determine reactions of nine barley, oat and wheat cultivars selected from the International differential assortment for identifying pathotypes of H. avenae. All nine cereal differentials expressed the same reactions to both populations. The nematodes reproduced well on the barley cultivar 'Emir' and the wheat cultivar 'Capa'. Resistant entries included the barley cultivars 'Siri', 'Ortolan' and 'Morocco', the oat cultivars 'Nidar II' and `A. sterilis I.376', and the wheat cultivars 'Loros' and 'AUS10894'. This matrix of reactions indicated that H. avenae populations from both locations were characterized as H. avenae Group 1 pathotypes but did not conclusively distinguish among pathotypes Ha21, Ha31 or Ha81. The Cre1 gene was identified as a potentially valuable source of resistance when developing wheat cultivars intended for release into these localities.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterodera avenae	Barley (Hordeum vulgare)	Algeria
	Heterodera avenae	Oat (Avena sativa)	Algeria
	Heterodera avenae	Wheat (Triticum)	Algeria