Differentiation of pathogenic races of rice blast fungus [Pyricularia] by using near-isogenic lines with Indica [Oryza sativa] genetic background
1994
Inukai, T. (Hokkaido Univ., Sapporo (Japan). Faculty of Agriculture) | Nelson, R.J. | Zeigler, R.S. | Sarkarung, S. | Takamure, I. | Kinoshita, T.
A set of near-isogenic lines (NILs) of rice was previously developed to identify pathogen races of blast fungus in the tropics. In this study of differentiating ability of the set of NILs was evaluated by comparison with those of Kiyosawa's and the International differentials. The set of 5 NILs was able to differentiate 46 Philippine isolates into 7 races. However, the differentiating ability of the NILs was not sufficient comparing with that of the International differentials. The integrated differentials of the NILs and the International differentials appeared to be tentatively useful to describe blast pathogen isolates in the Philippines. Kiyosawa's differentials developed in Japan was not useful in the Philippines because some of Kiyosawa's differentials showed intermediate reaction to Philippine isolates and that some carried more than one resistance gene to Philippine isolates
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