Verticillium wilt of cacao in Uganda: incidence and progress of infection in relation to time
Verticillium dahlie Kleb. from wilted cacao (Theobroma cacao L.) was re-isolated from the stem above soil level 3 days after inoculating the roots of container grown plants and reached the top of some 45 cm tall seedling by 6 days. No visible vascular discoloration was observed before the 9th day after inoculation. It is inferred that conidia or mycelium of the fungus must move passively within the transpiration stream. Mechanical damage to roots may facilitate early passage to the xylem and systemic distribution within the host. A progress of Infection Index reached 100 per cent by the 13th day from inoculation there were significant linear correlations both between internal progress of infection and between per cent incidence, within replicates, and time
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| Format: | biblioteca |
| Published: |
1975
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| Subjects: | THEOBROMA CACAO, VERTICILLIUM DAHLIAE, MARCHITEZ, ENFERMEDADES FUNGOSAS, INOCULACION, AISLAMIENTOS, SISTEMA VASCULAR DE LA PLANTA, XILEMA, DAÑOS MECANICOS, INFECCION, UGANDA, |
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