ISSN:
1573-5060
Keywords:
Triticum aestivum
;
wheat seedlings
;
Triticum sp.
;
Septoria nodorum
;
glume blotch disease
;
components of partial resistance
;
multivariate analysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Components of partial resistance of wheat seedlings to Septoria nodorum were measured in a glasshouse. Incubation period, infection frequency, latent period, lesion size, lesion cover, necrosis and unit spore production were recorded on 41 Triticum genotypes. There was no clear evidence of associated variation in components and multivariate analyses were used to elucidate such relationships. Factor analysis indicated that pathogen-induced necrosis, related possiby to toxin susceptibility, and unit spore production were major components of partial resistance to S. nodorum. Principal component analysis was used to characterise genotypes: associated with a continuous general resistance could be a high level of pathogen-induced necrosis or a high unit spore production, but rarely both in the same genotype.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00021470
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