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Fig. 2. Non-Stiff Stalk Lines with expired Plant Variety Protection. 
Public inbreds are noted by standard station release prefix. The PVPA lines with expired protection are shown in shaded boxes. Proprietary lines are from Asgrow Seed, J.C. Robinson Seed (JCR), DEKALB Genetics (DK), Holden's Foundation Seeds (LH), Iowa State, Novartis Seeds (NK), Pioneer Hi-Bred International (PH), Quality Research Associates, and Rothermel Seed. Arrow originates at parent and points to progeny. Pedigree derivation for each line is determined from Plant Variety Protection Act (PVPA) certificates referenced in Table 1, except where noted. 
Smith et al., 1997; 
Gerdes et al., 1993; ¶Smith and Smith, 1987; #PVPA certificate number 9800383; PVPA certificate number 8700197.
