Fig. 3
From: Grafting alleviates potassium stress and improves growth in tobacco
Elemental distribution of K+ in various tissues of the tobacco roots under different treatments. Data represent the relative atomic content of K+ as a percentage of all test elements (Na+, K+, Ca2+, P, S, Cl−, Mg2+) in a given region. The tobacco graft combinations included the ungrafted tobacco W (Wufeng No.2) and Y (Yunyan 87), and grafted tobacco Y/W (Y grafted onto W) and W/Y (W grafted onto Y)