Phenotype combinations in the F2 progeny of double mutant, G558-11-5-2/E22097-1-3-1.

nn: recessive, narrow leaf width allele. Nn: dominant, wild-type leaf width allele. vn: recessive, high vein density allele. Vn: dominant, wild-type vein density allele. Phenotypes were evaluated at the 5th–7th leaf stage except for the vein densities of progeny plants with very narrow leaves. Their vein counts per 2 mm could not be taken at the 5th–7th leaf stage so were instead taken at the late vegetative stage. Wild-type leaf width: 8–9 mm. Narrow leaf width: 4–6 mm. Very narrow leaf width: 1–2 mm. Wild-type vein density: ≥5−1. High vein density: ≥6.5−1. Very high vein density: ≥7.5 veins mm−1. Both candidate mutant lines G558-11-5-2 and E22097-1-3-1 had the phenotypic traits of narrow leaves and high vein density. The data characterizes F2 progeny descended from a single F1 plant. The F1 plants all had wild-type vein density and leaf width.