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Table 1 Biomass, P concentration and accumulation of barley L138 (low-P-tolerant) and L73 (low-P-sensitive) under low P and control conditions after 7 and 14 days

From: Root plasticity and Pi recycling within plants contribute to low-P tolerance in Tibetan wild barley

Treatment Genotype Biomass (g DW plant− 1) P concentration (mg P g− 1 DW) P accumulation (mg P organ− 1) Ratio of P in root to total (%)
Root Shoot R:S Root Shoot Root Shoot
7d
 Control L138 0.040 ± 0.001b 0.119 ± 0.006a 0.351 ± 0.028b 9.06 ± 0.14b 11.46 ± 0.18a 0.72 ± 0.04a 1.21 ± 0.10a 0.38 ± 0.03a
L73 0.039 ± 0.003b 0.099 ± 0.005ab 0.397 ± 0.045ab 10.08 ± 0.21a 10.63 ± 0.52a 0.78 ± 0.12a 1.23 ± 0.17a 0.39 ± 0.01a
 Low P L138 0.053 ± 0.001a 0.113 ± 0.005a 0.466 ± 0.043ab 2.20 ± 0.05c 2.72 ± 0.27b 0.23 ± 0.00b 0.33 ± 0.01b 0.42 ± 0.01a
L73 0.046 ± 0.003ab 0.079 ± 0.006b 0.551 ± 0.041a 1.79 ± 0.01c 2.31 ± 0.20b 0.17 ± 0.01b 0.21 ± 0.03b 0.44 ± 0.05a
14d
 Control L138 0.063 ± 0.003c 0.258 ± 0.011a 0.251 ± 0.012b 9.39 ± 0.04b 10.78 ± 0.21a 1.19 ± 0.09b 3.01 ± 0.14a 0.28 ± 0.01c
L73 0.071 ± 0.002c 0.245 ± 0.009ab 0.292 ± 0.021b 10.81 ± 0.18a 9.76 ± 0.14b 1.53 ± 0.06a 2.23 ± 0.19b 0.41 ± 0.03b
 Low P L138 0.124 ± 0.007a 0.223 ± 0.008b 0.568 ± 0.040a 1.50 ± 0.05c 1.31 ± 0.07c 0.39 ± 0.04c 0.28 ± 0.05c 0.59 ± 0.04a
L73 0.091 ± 0.002b 0.167 ± 0.004c 0.536 ± 0.018a 1.36 ± 0.03c 1.39 ± 0.01c 0.24 ± 0.01c 0.23 ± 0.00c 0.51 ± 0.01ab
  1. Barley plants were grown in hydroponics under low P and control conditions for 7 and 14 days. Data are mean values ± SE (n = 3–6), different letters show significant differences (p ≤ 0.05). Bold numbers indicate significant differences between two lines under control or low-P conditions