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(A) Genome size (2C values) of tissue from adults identified as C. atribarba and C. barbigera in the field. n = 24. (B) Genome size (2C values) of seeds from field crosses between Crepis atribarba and C. barbigera by treatment. Diploid x diploid (DxD) treatment n = 50, diploid x polyploid (DxP) treatment n = 51, and open (O) treatment n = 77.
