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- Title
The biology of Sclerotinia trifoliorum Erikss. and other species of sclerotium -forming fungi.
- Authors
WILLIAMS, G. H.; WESTERN, J. H.
- Abstract
SUMMARY In studies of the behaviour of sclerotia of Sclerotinia trifoliorum, S. sclerotiorum, Sclerotium delphinii and S. rolfsii it was established that S. trifoliorum and S. sclerotiorum formed apothecia in the field, S. sclerotiorum mainly in spring and S. trifoliorum almost exclusively in autumn. Apothecia were formed from sclerotia down to 2 in. in the soil, the number diminishing with increasing depth. At 6 in., sclerotia developed apothecial stipes up to 21/2 in. long: this limitation was not due to exhaustion of the food reserves of the sclerotia. In S. trifoliorum, apothecial formation was abundant in August, then steadily declined, and ceased in November. Broad red clover was exceptional in stimulating the initial flush in both S. trifoliorum and S. sclerotiorum, but very few apothecia formed subsequently. Mycelial growth from sclerotia of S. trifoliorum and S. sclerotiorum was much sparser, even in sterilized soil, than that from sclerotia of Sclerotium delphinii and S. rolfsii.
- Publication
Annals of Applied Biology, 1965, Vol 56, Issue 2, p253
- ISSN
0003-4746
- Publication type
Article
- DOI
10.1111/j.1744-7348.1965.tb01233.x