Fig. 3
From: Root plasticity and Pi recycling within plants contribute to low-P tolerance in Tibetan wild barley
Effects of low-P stress on the root growth of two barley lines with different low-P response. a Representative photos of L138 (low-P tolerant) and L73 (low-P sensitive) grown in low-P and control conditions for 7 and 14 days. b Total length and (c) lateral root length of seminal and crown roots. Different root types are sketched in (a). Data are means ± SE (n = 6), and different letters indicate significant differences (p ≤ 0.05) among columns in the same group