Figure 4

The correlation coefficient between morphological and physiological traits at 14 d and 28 d. a = correlation coefficient at 14 d in 0.5 ppm of P, b = correlation coefficient at 14 d in 10.0 ppm of P, c = correlation coefficient at 28 d in 0.5 ppm of P, and d = correlation coefficient at 28 d in 10.0 ppm of P. DL: number of dry leaves; L_V: root length per volume; LA: leaf area (cm2); LDW: leaf dry weight (g); LL: leaf length (cm); LNo: number of leaves; LW: leaf width (cm); PH: shoot length (cm); PL: number of pigmented leaves; PRA: projected root area (cm2); R.S: root-to-shoot ratio; R_P: root P content (mg/g); R_V: root volume (cm3); RAD: average root diameter (mm); RDW: root dry weight (g); RL: max. root length (cm); RSA: root surface area (cm2); S_d: stem diameter (mm); S_P: shoot P content (mg/g); SDW: shoot dry weight (g); SPAD; TRL: total root length (cm).