Influence of cold storage on survival of, and varietal susceptibility to soft rot erwinias
| MSI99P0078 | |
| Dookun, A. Autrey, L. J. C. | |
| Influence of cold storage on survival of, and varietal susceptibility to soft rot erwinias | |
| Govinden, N., Julien, M. H. R., Hunt, G. L. T. Autrey, L. J. C. (eds)., Production, Post-harvest technology and utilization of potato in the warm tropics - Proceedings of a workshop held in Réduit, Mauritius, 23-27 July 1990 | |
| Book chapter | |
| 1991 | |
| p.114-120 | |
| Réduit, Mauritius Sugar Industry Research Institute, MU | |
| En | |
| En Fr | |
| Monthly sampling in infected ware and seed tubers of varieties Mariline, Spunta and Up to date obtained from three localities and stored at 4°C for eight months from December 1983 to August 1984 revealed that the viability of Erwinias spp., mostly Erwinia carotovora subsp. carotovora (Ecc) declined rapidly in Mariline to nil level within two months. In the two other varieties bacterial viability stayed high until May and declined sharply to a very low level in July. Bacterial population density estimates by the quantal method of Pérombelon showed a sharp decrease in the population was so low that it was almost undetectable as from the first month after storage. Tubers of Mariline, Spunta, Up to date and Delaware kept at 4°C for the same period and inoculated monthly with Ecc and E.c. subsp. atroseptica (Eca) showed decrease in rotting over time. Highest susceptibility to rotting was found in Mariline and least in Delaware. Mariline was more susceptible to Ecc than to Eca while no such differential reaction was observed in the three other varieties. It is concluded that there is a varietal response to Erwinia spp. during cold storage as found elsewhere. Furthermore, varietal resistance and the reduction in bacterial viability and population density probably account for the rarity of severe damage by bacterial soft rotting organisms in potato fields in Mauritius, owing to the long period of storage of mother tubers. | |
| POTATOES ERWINIAS VARIETAL SUSCEPTIBILITY SURVIVAL COLD STORAGE BACTERIAL DISEASES DISEASES | |
| MAURITIUS | |
| Potatoes: Diseases and disease management | |
| Bacterial diseases: Soft rot | |
| 1991-12-12 | |
| En | |
| Mauritius Sugar Industry Research Institute | |
| LIB FC | |
| CAT | |
| PATH |