Fig. 2From: Effect of nitrogen fertilizer on the resistance of rice near-isogenic lines with BPH resistance genesAreas of honeydew excretion of N. lugens females feeding on IR24, NIL-BPH9, NIL-BPH17, and NIL-BPH32 under different nitrogen regimes. a Phloem-derived excretion. b Xylem-derived excretion. Means in each column followed by the same capital letter do not differ significantly among varieties (p < 0.05). Means in each column followed by the same lowercase letter do not differ significantly among different nitrogen treatments. The error bars indicate the S.EsBack to article page