Fig. 1
Response of peanut plant to the different phosphorus supplies (–P, 0 mM Pi and + P, 0.6 mM Pi). A and B Differences of plant in two P level treatments. C Differences of phenotype indicators of peanut plant. D Differences of root, stem, and leaf dry weight. DW, dry weight. E P content in different tissues between two P level groups. F Differences of photosynthetic indicators in two P level treatments. A, net photosynthetic value; Ci, intercellular CO2 concentration; E, transpiration rate; Gs, stomatal conductance. Column denoted mean value, and bars indicate standard errors. G Histochemical sections of primary root apex in two P levels. H and I Histochemical sections of the basal of main root in two P levels. PP, parenchyma pith; SXY, secondary xylem; SPH, secondary phloem; CO, cortex; EP, epidermis. *, P < 0.05. **, P < 0.01