Fig. 2. Distribution of clones for incidence (x 100) of internal heat necrosis and stability before removal of environmental heterogeneity and specific gravity (SG) for the 26 4x-2x clones and the two checks (‘Atlantic’ and B9955-11) grown in Plymouth, NC, Painter, VA, and Bridgeton, NJ, in 1999. Two clones with SG > 1.090 are not shown.