PWC5 and PWC4 of purple waxy corn had the highest total flavonoid content at the milky stage (R4) (136.0 ± 2.2 and
129.2 ± 3.2lg RE/g, respectively), whereas WWC1 and WWC2 of white waxy corn had the lowest total flavonoid content at the silking stage of 41.9 and 40.1lg RE/g, respectively