The diurnal periodicity in the ejection of ascospores OFGleotinia(Phialea)temulenta(Prill et Delacr.) Wilson, Noble, et Gray
| Autor: | Margot E. H. Johnston, Dawn Matthews, Suzanne C. Harrison |
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| Rok vydání: | 1964 |
| Předmět: | |
| Zdroj: | New Zealand Journal of Agricultural Research. 7:639-643 |
| ISSN: | 1175-8775 0028-8233 |
| DOI: | 10.1080/00288233.1964.10416391 |
| Popis: | The initial infection of Lolium perenne L., perennial ryegrass, with blind seed disease, caused by the fungus Gleotinia (Phialea) temulenta (Prill et Delacr.) Wilson, Noble, et Gray, takes place by means of ascospores ejected from apothecia on the ground, and occurs almost entirely when the florets are open. An escape from the disease might be found in a strain of perennial ryegrass which flowered at a time of day different from that of the main ascospore showers. An experiment is described in which blind seed ascospores were trapped from the air above an area of ryegrass during the early summers of 1960 and 1961. Trappings were carried out at hourly or half-hourly intervals between 8.30 a.m. and 3.30 p.m. The peak showers in 1960 occurred between 11.00 a.m, and 1.30 p.m., the first spores being trapped at 9.30 a.m. and the last at 3.30 p.m. In 1961 the peak showers took place earlier-between 10.00 a.m, and 11.30 a.m. The earliest capture occurred at 8.30 a.m. and the latest at 2.00 p.m. Since pe... |
| Databáze: | OpenAIRE |
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