Responses in the morphology, physiology and biochemistry of Taxus chinensis var. mairei grown under supplementary UV-B radiation.

The effects of supplemental UV-B radiation on Taxus chinensis var. mairei were studied. Leaf traits, gas exchange parameters and the concentrations of photosynthetic pigments, cellular defense system products, secondary metabolites and ultrastructure were determined.

[Quantitative changes of anti-cancer active components in Taxus chinensis var. mairei branches and leaves].

The quantitative changes of anti-cancer ingredients such as taxol, cephalomannine, baccatin III and 10-deacetylbaccatin III in the branches and leaves of Taxus chinensis var. mairei during one growth season were measured by HPLC. The results showed that the contents of these anticancer ingredients had an obvious change from April when the new branches began to germinate to November when the branches basically stopped growing.