Abstract
In order to protect the rice crop from the blast which is one of the most seriously damaging disease of the rice crop, various approaches such as fungicides, resistant cultivar-breeding have been challenged. However, those approaches were not permanently effective because of the variability of the pathogen, Magnaporthe grisea. Many kinds of variations are found in the fungus. The most important variable feature is the pathogenicity (Ou, 1980). In Japan, the pathogenic race of the fungus is usually determined using nine differential varieties (Table 1, Yamada et al. 1976), and more than 40 pathogenic races has been identified. In addition, the pathogen is reported to be variable in fungicide resistance (Yoshino 1988). These variations should have been introduced genetically, by mutations or sexual / parasexual recombination.
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Sone, T., Tomita, F. (2000). Clonal Lineages of Japanese Blast Fungus Population. In: Tharreau, D., Lebrun, M.H., Talbot, N.J., Notteghem, J.L. (eds) Advances in Rice Blast Research. Developments in Plant Pathology, vol 15. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9430-1_27
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DOI: https://doi.org/10.1007/978-94-015-9430-1_27
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