Table 1.
Mean relative root growth (n = 6) of M. truncatula lines after 2 d of growth in 2.5 μM Al solution.
| Line Designation | Accession Number | Country of Origin | Relative root growth (RRG) | (±)SE | P-value (*<0.05 **<0.01) | RRG (normalized to A17) |
| USDA Collection | ||||||
| A32 (T32) | PI 384662 | Morocco | 0.93 | 0.05 | 0.001 ** | 2.92 |
| A43 | PI 577628 | Spain | 0.91 | 0.09 | 0.000 ** | 2.85 |
| A41 | PI 319045 | Spain | 0.88 | 0.05 | 0.000 ** | 2.75 |
| A84 | W6 6050 | Tunisia | 0.88 | 0.17 | 0.000 ** | 2.74 |
| A10 | PI 197361 | Australia | 0.81 | 0.11 | 0.000 ** | 2.52 |
| A62 | PI 464815 | Turkey | 0.80 | 0.28 | 0.001 ** | 2.50 |
| A47 | W6 6099 | Portugal | 0.71 | 0.09 | 0.000 ** | 2.20 |
| A36 | PI 516937 | Morocco | 0.67 | 0.13 | 0.000 ** | 2.08 |
| A85 | W6 6110 | Italy | 0.63 | 0.11 | 0.000 ** | 1.97 |
| A55 | W6 6000 | France | 0.60 | 0.07 | 0.000 ** | 1.88 |
| A34 | PI 516927 | Morocco | 0.60 | 0.08 | 0.000 ** | 1.87 |
| A77 | W6 6012 | Italy | 0.59 | 0.09 | 0.001 * | 1.85 |
| A91 | PI 577617 | Greece | 0.59 | 0.03 | 0.000 ** | 1.84 |
| A65 | PI 577434 | Tunisia | 0.58 | 0.08 | 0.001 ** | 1.81 |
| A100 | W6 5983 | Cyprus | 0.56 | 0.10 | 0.003 ** | 1.75 |
| A50 | PI 577608 | France | 0.55 | 0.15 | 0.018 * | 1.70 |
| A11 | PI 243884 | Australia | 0.54 | 0.12 | 0.012 * | 1.69 |
| A28 | PI 384636 | Morocco | 0.52 | 0.06 | 0.005 ** | 1.63 |
| A12 | PI 442892 | Australia | 0.50 | 0.09 | 0.020 * | 1.56 |
| A88 | PI 577599 | Greece | 0.49 | 0.13 | 0.052 | 1.54 |
| A3 | PI 190084 | Australia | 0.49 | 0.09 | 0.028 * | 1.53 |
| A87 | PI 566887 | Greece | 0.48 | 0.21 | 0.183 | 1.49 |
| A89 | PI 577601 | Greece | 0.47 | 0.12 | 0.087 | 1.46 |
| A101 | W6 5984 | Cyprus | 0.44 | 0.06 | 0.083 | 1.38 |
| A21 | PI 577641 | Australia | 0.42 | 0.10 | 0.210 | 1.31 |
| A15 | PI 469099 | Australia | 0.38 | 0.07 | 0.438 | 1.19 |
| A40 | PI 244285 | Spain | 0.38 | 0.07 | 0.427 | 1.18 |
| A66 | PI 577619 | Tunisia | 0.35 | 0.15 | 0.787 | 1.10 |
| A5 | PI 190089 | Australia | 0.34 | 0.05 | 0.852 | 1.06 |
| A17 | Australia | 0.33 | 0.03 | NA | 1.00 | |
| A92 | PI 577618 | Greece | 0.31 | 0.11 | 0.818 | 0.97 |
| A93 | PI 577604 | Cyprus | 0.30 | 0.07 | 0.690 | 0.94 |
| A18 | PI 517257 | Australia | 0.28 | 0.16 | 0.633 | 0.88 |
| A82 | W6 6047 | Tunisia | 0.28 | 0.03 | 0.418 | 0.87 |
| A17 | PI 469102 | Australia | 0.27 | 0.05 | 0.374 | 0.85 |
| A42 | PI 319051 | Spain | 0.23 | 0.08 | 0.000 ** | 0.72 |
| A76 | W6 5964 | Italy | 0.23 | 0.04 | 0.112 | 0.71 |
| A19 | PI 566888 | Australia | 0.19 | 0.07 | 0.044 * | 0.60 |
| A90 | PI 577602 | Greece | 0.17 | 0.08 | 0.026 * | 0.53 |
| A70 (S70) | PI 577613 | Italy | 0.15 | 0.02 | 0.002 ** | 0.48 |
| A60 | PI 577614 | Malta | 0.15 | 0.10 | 0.028 * | 0.48 |
| A7 | PI 190091 | Australia | 0.15 | 0.09 | 0.018 * | 0.48 |
| A31 | PI 384660 | Morocco | 0.15 | 0.04 | 0.012 * | 0.47 |
| A4 | PI 190087 | Australia | 0.14 | 0.04 | 0.004 ** | 0.44 |
| A56 | PI 493295 | Portugal | 0.13 | 0.07 | 0.005 ** | 0.40 |
| A48 | PI 535739 | Libya | 0.12 | 0.05 | 0.002 ** | 0.39 |
| A79 | W6 6025 | Italy | 0.08 | 0.06 | 0.001 ** | 0.26 |
| French Collection | ||||||
| DZA45.5 | Algeria | 0.61 | 0.08 | 0.000 ** | 1.91 | |
| TN8.3 | Tunisia | 0.41 | 0.04 | 0.132 | 1.28 | |
| TN1.11 | Tunisia | 0.35 | 0.03 | 0.656 | 1.10 | |
| F83005.9 | France | 0.33 | 0.14 | 0.941 | 1.04 | |
| F8005.5 | France | 0.30 | 0.03 | 0.586 | 0.93 | |
| A20 | Australia | 0.25 | 0.05 | 0.207 | 0.80 | |
| DZA315.16 | Algeria | 0.24 | 0.03 | 0.099 | 0.74 | |
| TN6.18 | Tunisia | 0.19 | 0.11 | 0.124 | 0.59 | |
RRG, Ratio of root growth in 2.5 μM Al solution to root growth in 0 μM Al solution; SE, standard error of the mean; P-value, significance comparing mean relative root growth for each line with that of A17. Student's t-test (assuming equal variance) using a two-tailed distribution was employed for the statistical test.