When healthy onion bulbs were inoculated withF. oxysporum, four flavonoids (two quercetin and two isorhamnetin derivatives) underwent concentration changes typical for the defence materials against pathogens (Lee et al., 2012). Ardila et al.(2013) have recently showed that the constitutive total phenolicand flavonoid contents and the antioxidant activity levels of ninedistinct commercial cultivars of carnation are related to their differential response to Fod