who indicated that the Q/K ratio
in kale increased in low radiation associated with a low temperature.
The ratio Q/K in the leaves of C. paliurus ranged from 0.37
to 0.71, demonstrating a wider range of seasonal variation, as compared
to the ranges of Q/I (from 0.28 to 0.50) and K/I (from 0.59 to
0.81). These results revealed that the three flavonoid composition
ratios in C. paliurus leaves were markedly affected by environmental
factors, even if the detailed mechanisms affecting this are not
very clear.