Fig. 8
From: Phosphorus and carbohydrate metabolism contributes to low phosphorus tolerance in cotton
Principal component analysis (PCA) biplot of morphophysiological and biochemical traits of six contrasting low P tolerant cotton genotypes grown under low and normal P conditions in hydroponic (A) and pot (B) cultures. Shoot length (SL), shoot dry matter (SDM), root dry matter (RDM), total plant dry matter (TDM), root length (RL), root surface area (RSA), root volume (RV), root diameter (RD), root length ratio (RLR), root mass ratio (RMR), root thickness (RT), root density (RDE), chlorophyll a content (Chl a), chlorophyll b contents (Chl b), carotenoid contents (Car), photosynthetic rate (Pn), stomatal conductance (gs), transpiration rate (E), intercellular CO2 concentration (Ci), root P concentration (RP), shoot P concentration (SP), total P concentration (TP), root P accumulation (RPA), shoot P accumulation (SPA), total P accumulation (TPA), P uptake efficiency (PUpE), P utilization efficiency (PUtE), root superoxide dismutase activity (RSOD), shoot superoxide dismutase activity (SSOD), root peroxidase activity (RPOD), shoot peroxidase activity (SPOD), root catalase activity (RCAT), shoot catalase activity (SCAT), root malondialdehyde content (RMDA), shoot malondialdehyde content (SMDA), root phosphofructokinase activity (RPFK), shoot phosphofructokinase activity (SPFK), root acid phosphatase activity (RACP), shoot acid phosphatase activity (SACP), root alkali phosphatase activity (RALP), shoot alkali phosphatase activity (SALP), Root glucose content (RG), shoot glucose content (SG), root fructose content (RF), shoot fructose content (SF), root sucrose content (RS), shoot sucrose content (SS), root starch content (Rstarch), shoot starch content (Sstarch), root sucrose synthase activity (RSS), shoot sucrose synthase activity (SSS), root sucrose phosphate synthase activity (RSPS), shoot sucrose phosphate synthase activity (SSPS), root phosphoenolpyruvate carboxylase activity (RPEPC), shoot phosphoenolpyruvate carboxylase activity (SPEPC), root fructose 1,6-bisphosphatase activity (RFBP), and shoot fructose 1,6-bisphosphatase activity (SFBP)