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. 2017 Dec 13;12(12):e0189277. doi: 10.1371/journal.pone.0189277

Fig 2. Plant Variety Protection certificates expired as of 2012, by proprietor.

Fig 2

Proprietor names were abbreviated as follows: Pioneer, Pioneer Hi-Bred International, Inc.; Holden’s, Holden’s Foundation Seeds, Inc.; DEKALB, DEKALB Genetics; Novartis, Novartis Seeds, Inc; United AgriSeeds, United AgriSeeds, Inc.; Advanta, Advanta Technology Limited; and Wilson Hybrids, Wilson Hybrids Inc. Proprietor names are on the x-axis, and the number of inbreds present in this set of 283 is on the y-axis. Above each bar is the value in percent, calculated as the number of PVP inbreds for each respective proprietor divided by 283. Proprietorship was obtained from the Plant Variety Protection certificate for each inbred, accessible in the United States Department of Agriculture Agricultural Research Service Germplasm Network Information Database [48].