Figure 2.

Phenotype Comparison of Rust-Infected L6- and L7-Carrying Flax Plants.

Rust disease or resistance phenotype on the flax cultivar Bison (A), a Bison backcross line (x12) containing the L6 gene from Birio (B), and a Bison backcross line (x12) containing the L7 gene from Barnes (C) 14 d after inoculation by the flax rust strain CH5F2-138, which carries an allele of AvrL567, the product of which is recognized by L6 and L7. Zoomed regions of upper leaves and lower leaves (outlined in red) on the right side of each plant show differences in leaf reaction after rust infection (disease = orange pustule development or resistance = hypersensitive white flecks, indicated by red arrowheads).