Figure 7.

Spraying ethephon abolishes the difference in oviposition preference of BPH for WT and ir-ibak1 plants. (a,b) Mean percentage (+SE, n = 10) of BPH eggs per plant on pairs of plants (WT versus irIBAK1-1 or irIBAK1-2) that were sprayed with ddH₂O (with 0.02% Tween-20) 48 h after the release of BPH. (c–f) Mean percentage (+SE, n = 10) of BPH eggs per plant on pairs of plants, WT plants that were sprayed with ddH₂O (with 0.02% Tween-20) versus irIBAK1-1 or irIBAK1-2 plants that were sprayed with 500-μM ethephon (ETH) (c,d) or WT plants that were sprayed with ddH₂O (with 0.02% Tween-20) versus irIBAK1-1 or irIBAK1-2 plants that were sprayed with 1-mM ETH (e,f) 48 h after the release of BPH. Con, control solution. Asterisks represent significant differences between the treated plants and control plants (** p < 0.01; Student’s t-tests).