1993年 茨城・栃木・埼玉県におけるいもち病菌のレース分布
1994 年 1994 巻 41 号 p. 17-21
詳細
1994 年 1994 巻 41 号 p. 17-21
The cool summer of 1993 damaged the rice crop nation-wide. Furthermore rice blast was found to be widespread in Ibaraki, Tochigi and Saitama Prefectures. The race of rice blast fungus isolated in Ibaraki, Tochigi and Saitama Prefectures were 001, 003, 007, 033 and 037. In 1988 the major race was 003 in these prefectures, but by 1993 this had been replaced by 007. Because of the increase of race 007 the area planted with Kinuhikari and Asanohikari varieties of rice, which have a resistance gene Pi-i, was increased.
