Figure 2.

BPH-resistance test of the BPH-resistant wide-spectrum restorer lines at the seedling stage. (A,B): BPH-resistance phenotype (A) and scores (B) of the pyramided restorer lines. LY6 and LY9, Resistant control line Luoyang-6 and Luoyang-9, respectively (The same as below); 9,311, susceptible control; 01~16: BC₃F₃ lines. (C,D): BPH-resistance test (C) and scores (D) of the restorer lines and hybrid rice F₁s. YTA, Susceptible control Yuetai A. Letters indicate a significant difference at the 5% significance level by the least significant difference test.