were obviously
different among the 12 provenances sampled in October (Table 2),
ranging from 0.36 to 0.91 for the quercetin-to-kaempferol ratio (Q/
K), from 0.23 to 0.71 for the quercetin-to-isoquercitrin ratio (Q/I)
and from 0.53 to 1.20 for the kaempferol-to-isoquercitrin ratio
(K/I). These results revealed that the three flavonoid contents and
their composition ratios in C. paliurus leavese