Common rust of sugarcane in Mauritius: progress and prospects
| MSI00P3311 | |
| Saumtally, S. Autrey, L. J. C. | |
| Common rust of sugarcane in Mauritius: progress and prospects | |
| Rao, G. P., Filho, B. A., Magarey, R. C. and Autrey, L. J. C. (eds), Sugarcane pathology. Vol.1. Fungal diseases | |
| Book chapter | |
| 1999 | |
| p. 21-31 | |
| 1-57808-046-0 | |
| Enfield, Science Publishers Inc. | |
| En | |
| The importance of common rust (Puccinia melanocephala H and P Syd.) in Mauritius has changed markedly over the years and it is considered as one of the major diseases of sugarcane. The cultivation of two varieties has declined owing to their susceptibility to the disease. Peak infection occurs during the winter months of June to September. The germination rate of collected spores of the pathogen has been observed to be low. Severity of leaf infection can be reliably measured using a video image analyser. Leaf 3 or leaves 1 and 4 or leaves 2 and 4 were representative samples of overall infection severity in seedlings. Rust can be controlled using fungicides fenpropimorph or mancozeb. The fact that the disease can reduce both cane and sugar yield by over 10 per cent precludes the cultivation of susceptible and highly susceptible varieties in the superhumid zone of Mauritius. Increased selection pressure at the early stages of the variety development programme will reduce the number of susceptible clones in subsequent stages. Trends in the mode of inheritance of the disease have shown that it is highly heritable and is governed by a few genes with major effects. The association of molecular markers to rust resistance is being investigated so as to identify resistant progenies and render the cane selection programme more efficient. | |
| SUGARCANE DISEASES FUNGAL DISEASES RUST DISEASE PUCCINIA MELANOCEPHALA EPIDEMIOLOGY CONTROL INHERITANCE MOLECULAR MARKERS | |
| Sugarcane: Diseases and disease management | |
| Fungal diseases | |
| 2000-01-25 | |
| En | |
| MSIRI | |
| DIR | |
| PATH |