Furthermore, we confirmed that BPH26 is identical to BPH2,
which was rendered ineffective by a virulent biotype of BPH in the
Asian rice fields. Herein, we discuss the possibility for reusing BPH2. and the BPH resistance of these plants was analyzed based on the
survival rate of BPH in a test tube. Eventually, we determined the
candidate genomic region of BPH26 in a 135-kb region between two
flanking markers, DS-72B4 and DS-173B (Fig. 1a).