Characterisation of virulence reactions for Heterodera avenae populations from two localities in Algeria Public Deposited

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  • 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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  • Haddadi, F., Mokabli, A., & Smiley, R. W. (2013). Characterization of virulence reactions for Heterodera avenae populations from two localities in Algeria. Phytoparasitica, 41(4), 449-456. doi:10.1007/s12600-013-0308-y
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