Breeding of blast resistant isogenic lines in rice variety 'Koshihikari' and evaluation of their characters.

摘要

The breeding process of currently bred blast [Pyricularia oryzae]-resistant isogenic lines, namely Koshihikari Niigata BL No. 1, Koshihikari Niigata BL No. 2, Koshihikari Niigata BL No. 3, Koshihikari Niigata BL No. 4, Koshihikari Niigata BL No. 5, Koshihikari Niigata BL No. 6, Koshihikari Niigata BL No. 7 and Koshihikari Niigata BL No. 8 is outlined. The responses of these lines to different races of the blast pathogen, the similarity of their agronomic traits, quality and taste to those of cv. Koshihikari, and their characters distinct from major varieties planted in Niigata Prefecture, Japan, are also discussed..