Figure 3From: Quantifying remobilization of pre-existing nitrogen from cuttings to new growth of woody plants using 15N at natural abundanceUnadjusted (open symbols) and adjusted (closed symbols) δ15N for new growth of the whole plant plotted against the per cent contribution of carry-over nitrogen to new growth of Populus balsamifera L. supplied with either nitrate (A) or ammonium (B). Each data point represents a genotypic mean (N = 3). Correlation coefficients and P-values are placed near each line.Back to article page