| Autor: |
Hare, M.C., Parry, D.W., Baker, M.D. |
| Zdroj: |
European Journal of Plant Pathology; December 1999, Vol. 105 Issue: 9 p859-866, 8p |
| Abstrakt: |
The distribution of seeds by weight for three lots of winter wheat cv. Avalon infected by Fusarium culmorumand three lots of winter wheat cv. Riband infected by Microdochium nivalewas determined. The distribution of infected seeds within each seed lot was then determined by isolating F. culmorumfrom seeds on moist filter paper and M. nivalefrom seeds on potato dextrose agar. The distribution of M. nivaleinfected seeds between seeds of different weight was similar to that of the seed lot as a whole, whereas the distribution of F. culmorumwas greater in light seeds than heavy seeds. The percentage germination of infected seeds decreased with seed weight. A similar situation was found with respect to seedling emergence in compost for F. culmoruminfected seeds. However, with M. nivaleinfection, similar numbers of seedlings emerged from both light and heavy infected seeds. Seed treatment with guazatine increased seedling emergence for both light and heavy seed infected by M. nivale. However, seedling emergence from F. culmoruminfected seed was poor even following treatment with guazatine. Poor emergence was most evident from light seed. |
| Databáze: |
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