Fig. 3. Pi levels for various Satt561 (LG L) and Satt237 (LG N) marker classes in seed from a Boggs-RR x CX1834-1-2 F2 population, based on visual ratings from colorimetric assays. (Bo = allele from Boggs-RR; CX = allele from CX1834-1-2. Visual ratings: 0 = no reaction to 5.0 = dark blue. Bars represent standard errors.)