Virulence of populations and clones of Pyrenophora teres Drechs. in a set of differential barley genotypes
2002
Vanco, B. (Research Inst. of Plant Production, Piestany (Slovak Republic))
In a period 1999-2001, virulences were studied of the populations and clones of Pyrenophora teres Drechs., isolated from various infected leaves of spring barley collected in the territory of West (Borovce) and East (Maly Saris) Slovakia. There were mostly statistically significant or highly significant differences in virulence (infection type) among the isolates (five clones and one population) of every leaf. The clones with maximum virulence value within a set of differential barley genotypes were suppressed within the populations from which they originated. Virulence of the original population approached the average virulence of 5 clones. The correlation of average infection types of the 16 tested barley genotypes between years in both localities as well as between these localities in different years was found to be positive and mostly statistically significant in all cases. The results achieved indicate a possibility of using not only the clones and their mixtures but also their populations and sub-populations in breeding spring barley for resistance to Pyrenophora teres Drechs.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Agricultural Knowledge and Innovation Institute
Découvrez la collection de ce fournisseur de données dans AGRIS