Figure 1.

Lesion and nodal resistance phenotypes of pea lines used in genome‐wide association studies, and phenotypes of ‘Lifter’ and PI 240515 used in RNA‐Seq. (a) Phenotypic distribution of lesion resistance (lesion size in centimeter). (b) Phenotypic distribution of nodal resistance (score 0 = dead plant, 4 = lesion restricted to the inoculated node number 4). (c) Pearson's correlation between lesion and nodal resistance demonstrates slight but significant negative correlation (−0.19, p < 0.05; negative due to the inverse rating scale for nodal resistance). (d) Phenotypic difference between a susceptible cultivar ‘Lifter’ and a partially resistant accession PI 240515 over time. A potato dextrose agar block containing actively growing hyphal tips of Sclerotinia sclerotiorum was used for inoculation. PI 240515 has partial resistance and displays slower disease progress compared to susceptible ‘Lifter.’ Infection and damping‐off can be observed in ‘Lifter’ as early as 12 and 24 hpi, respectively, but not PI 240515. Infection expands in “Lifter” as early at 48 hpi, and infection can be observed around the inoculated site of PI 240515 at 48 hpi