Carpogenic germination of and potential distribution in Australia
This study confirms that Australian isolates of Sclerotinia minor can produce fertile apothecia and further demonstrates that ascospores collected from these apothecia are pathogenic to sunflower ( Helianthus annuus ). Sunflower is a known host of the related fungus Sclerotinia sclerotiorum and is g...
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| Published in: | Australasian plant pathology Vol. 31; no. 3; pp. 259 - 265 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
2002
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| Online Access: | Get full text |
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| Summary: | This study confirms that Australian isolates of Sclerotinia minor can produce fertile apothecia and further demonstrates that ascospores collected from these apothecia are pathogenic to sunflower ( Helianthus annuus ). Sunflower is a known host of the related fungus Sclerotinia sclerotiorum and is grown in some regions where S. minor is known to occur. Head rot symptoms were produced following inoculation with S. minor ascospores. Predictive modeling using CLIMEX software suggested that conditions suitable for carpogenic germination of S. minor probably occur in Australia particularly in southern regions. Carpogenic germination is probably a rare event in northern regions and, if it does occur, probably does not coincide with anthesis in sunflower crops, therefore allowing disease escape. Keywords: Sclerotinia sclerotiorum , Sclerotinia , ascospore, sunflower, head rot, basal stem rot, CLIMEX. Australasian Plant Pathology 31(3) 259 - 265 Full text doi:10.1071/AP02022 © CSIRO 2002 |
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| Bibliography: | Australasian Plant Pathology publishes new and significant research in all fields of plant pathology. Distribution and readership of the journal is worldwide, but emphasis is placed on strengthening its role as the major publishing outlet in the Australasian region. Australasia is interpreted in the broadest sense to include not only Australia, New Zealand and Papua New Guinea, but also the Indian Ocean, Pacific and Asian regions |
| ISSN: | 1448-6032 |
| DOI: | 10.1071/AP02022 |