Plant PPCP % Germination at Treatment Concentrationb
  1 µg/mL 2 µg/mL 5 µg/mL 25 µg/mL
Radish (Raphanussativus)        
Acetominophen 97% 99% 99% 91%
β-Estradiol 97% 96% 95% 95%
Doxylamine 95% 97% 95% 97%
Gemfibrozil 99% 99% 93% 95%
Caffeine 97% 95% 96% 96%
Pinto Bean (Phaseolus vulgaris)        
Acetominophen 90% 80% 84% 86%
β-Estradiol 82% 80% 82% 80%
Doxylamine 86% 90% 80% 80%
Gemfibrozil 84% 85% 87% 70%
Caffeine 90% 82% 80% 82%
aData from Osma et al. (unpublished). bSeed germination in controls was ≥ 98%.
Table 1: Example data from seed germination assays with PPCPsa.