Fig. 3
From: QTL mapping of root traits in wheat under different phosphorus levels using hydroponic culture
Correlation analysis among the traits under (a) control, (b) low and (c) high P treatment. Intensities of blue colour show degrees of positive and red colour shows degrees of negative correlations; circle sizes indicate low to high significance. Abbreviations: RL, root length; RV, root volume; RD, root diameter; RTN, root tip number; ROSA, root surface area; SDW, shoot dry weight; RDW, root dry weight; TDW, total dry weight; RRS, ratio of root to shoot dry weight