摘要：Responses of shoot length and phenolic content of Myriophyllum spicatum, to different UV-B exposure (0.3 and 0 W/m 2 additional radiation), nitrogen (3.3 and 0 mg/L addition N in solution) and white light (230 and 60 μmol photons/m 2 /sec) environments, were assessed with an indoor manipulation experiment. The higher UV-B and higher white light both depressed shoot elongation. But the depression effect of white light was not lasting. White light and nitrogen both significantly affected shoot phenolic concentration, but UV-B did not. Among the three experiments variable, the only significant interaction effect was between UV-B and nitrogen, which showed that UV-B can more effectively affected shoot length when nitrogen was low.
