Evolution of virulence patterns in yello
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D. L. Danial; R. W. Stubbs; J. E. Parlevliet
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Article
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1994
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Springer
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English
β 445 KB
Virulence patterns of yellow rust isolates collected in Kenya between 1986-1989 were compared with earlier results. The number of virulence factors per race and the range in virulence factors both increased considerably. Before 1976 races carried on average 4.5 to 5.0 virulence factors, whereas the