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. 2022 Dec 13;119(51):e2210773119. doi: 10.1073/pnas.2210773119

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Copyright © 2022 the Author(s). Published by PNAS.

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Fig. 1. — Turnover of the top wheat varieties in the United States, 1919 to 2019. Notes: Colored varieties represent varieties that were among the top five in area share in at least 1 y; “OTHER-TOP20-VARIETIES” represent varieties that were among the top 20 in area share in at least 1 y (excluding the top five varieties colored already); “OTHER-SMALL-VARIETIES” represent the remaining named varieties (excluding unknown varieties).