Fig. 1
Changes in morph-physiological (red bars), photosynthetic (blue bars), stomatal (black bars) and chloroplastic traits (pink bars) of leaves and siliques in response to K-deficiency. The response ratio was calculated as the relative variation of each parameters under K-deficiency using the +K treatment as a control. Value bars facing the left and right indicate decreases and increases in traits compared to the values under +K treatment, respectively. M A, leaf (silique) mass per area; Chl, chlorophyll content; A, net photosynthetic rate; g s, stomatal conductance; C i, substomatal CO2 concentration; α, apparent quantum yield; CE, carboxylation efficiency; V cmax, the maximum rate of RuBP carboxylation; J max, the maximum rate of electron transport. D chl-cw, the distance between chloroplast and cell wall; V chl, chloroplast volume; S chl, chloroplast surface area