highly significantP<0.001
With pollen from plants with S 1 S 3 haplotypes, SI induced strong inhibition of pollen tube length (22.1%, P<0.001 ***, n=300) and addition of as- PrpS 1 -ODNs gave a highly significant recovery of SI-treated tubes (58.3% increase in length compared to SI-treated; P<0.001, ***, n=150), and incompatible pollen responded in a bimodal manner, consistent with only S 1 pollen being affected ( Supplemental Fig 4 ).