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A seedling method for measuring the susceptibility of wheat cultivars to Pucdnia striiformis
Author(s) -
PRIESTLEY R. H.,
DOLING D. A.
Publication year - 1976
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1976.tb00598.x
Subject(s) - seedling , cultivar , biology , puccinia striiformis , stripe rust , inoculation , botany , horticulture , agronomy , plant disease resistance , genetics , gene
SUMMARY The Wycombe seedling method for measuring the susceptibility of wheat cultivars to physiologic races of Puccinia striiformis involves determining the percentage of seedlings bearing uredosori at a fixed time after inoculation under controlled environment conditions. Each cultivar is classified statistically as either vertically or horizontally susceptible and this classification is utilized in expressing the susceptibility of each to a number of races as a single value. The method has been used for three years to evaluate wheat cultivars and examples of significant differences in susceptibility between cultivars are given. A highly significant correlation has been established between data collected using the Wycombe seedling method and field data from physiologic race test beds.