Fig. 4

Alteration of TAG class in mature leaves (ML, a) and new shoots (NS, b) of tea plants grown under different nitrogen levels. Values shown were the mean intensities of each TAG species under three nitrogen levels at the rate of 0 (ML1 & NS1, white bar), 285 (ML3 & NS3, black bar) and 474 (ML4 & NS4, gray bar with oblique line) kg/ha, respectively. Error bars indicated the interval between the first and the third quartiles