Characterization of Growth and Conidia Production of Exserohilum monoceras on Different Substrates |
| |
Authors: | W M Zhang A K Watson |
| |
Institution: | 1. Department of Plant Science , McGill University , Macdonald Campus, Ste-Anne-de-Bellevue , Québec , Canada , H9X 3V9;2. Department of Plant Science , McGill University , Macdonald Campus, Ste-Anne-de-Bellevue , Québec , Canada , H9X 3V9;3. International Rice Research Institute (IRRI) , 1099 Manila, PO Box 933, The Philippines |
| |
Abstract: | On agar media the maximum conidia production of Exserohilum monoceras occurred on V-8 juice agar (VA) or centrifuged V-8 juice agar, whereas the optimal radial mycelial growth occurred on Czapek-Dox agar. The optimal temperatures for radial mycelial growth and conidia production were 28 and 27°C respectively. Light prohibited E. monoceras conidia production. The best sporulation occurred under continuous dark conditions. Echinochloa leaf decoction significantly increased conidia production on potato dextrose agar (PDA) and VA, and significantly increased germ tube length on PDA, lima bean agar and VA, but did not affect conidia germination. No conidia were produced in liquid media. Of 22 agricultural-based products evaluated as solid substrates, the most abundant sporulation (1.8 × 106 conidia g-1 of dry weight) occurred on corn leaves. The conidia production of E. monoceras on corn leaves was affected by incubation period, moisture content and substrate quantity. There were no differences in germination rate, germ tube length and virulence of conidia produced on agar media or corn leaves. |
| |
Keywords: | Growth Sporulation Mass Production Exserohilum Monoceras Bioherbicide Biological Control Echinochloa |
本文献已被 InformaWorld 等数据库收录! |
|