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. 2022 May 17;12:8228. doi: 10.1038/s41598-022-11408-0

Table 2.

Effects of exogenous ABA on the root morphological parameters of five treatment time course in the presence of salinity.

Root morphology indexes Treatments Duration of salt stress (days)
2 4 6 8 10
RL (cm) Q0 1527.297 ± 72.284b 1865.936 ± 57.217a 1887.065 ± 93.148a 1913.791 ± 42.822a 2237.531 ± 43.270a
Q1 2061.009 ± 68.806a 1722.481 ± 87.213ab 1918.364 ± 71.524a 1905.424 ± 49.963a 1740.499 ± 23.042c
Q2 992.968 ± 45.561c 1330.461 ± 37.333c 1640.730 ± 60.905b 1664.085 ± 43.595b 2055.878 ± 42.923b
Q3 1428.053 ± 33.056b 1557.651 ± 62.433b 1509.628 ± 55.048b 1986.373 ± 41.022a 2078.838 ± 54.698b
Z0 1244.785 ± 50.296b 1263.332 ± 55.976c 1608.817 ± 162.487b 1687.928 ± 78.604a 1923.892 ± 64.187b
Z1 1669.422 ± 80.943a 1665.656 ± 35.923a 2025.025 ± 57.653a 1703.851 ± 50.350a 1860.486 ± 42.543b
Z2 1004.936 ± 32.768c 1103.805 ± 60.720d 997.324 ± 36.160d 1279.446 ± 40.500c 1345.150 ± 50.764c
Z3 1110.820 ± 84.072bc 1492.566 ± 26.671b 1334.720 ± 77.917c 1482.172 ± 47.045b 2230.447 ± 74.359a
RSA (cm2) Q0 77.443 ± 6.093b 107.159 ± 4.492a 104.072 ± 5.089a 191.917 ± 6.039b 238.443 ± 8.565a
Q1 105.594 ± 4.721a 93.546 ± 6.702b 115.083 ± 6.397a 212.187 ± 7.484a 174.394 ± 4.696b
Q2 60.895 ± 3.140c 78.845 ± 2.332c 116.837 ± 5.083a 176.216 ± 7.137b 227.161 ± 9.653a
Q3 71.728 ± 2.115b 98.103 ± 4.038ab 104.744 ± 3.005a 226.006 ± 5.454a 247.840 ± 7.546a
Z0 59.470 ± 2.358b 66.816 ± 1.894bc 84.653 ± 11.743b 154.105 ± 2.585b 209.023 ± 6.303b
Z1 79.943 ± 5.110a 78.682 ± 4.724ab 117.393 ± 4.428a 185.708 ± 7.725a 218.185 ± 6.270b
Z2 48.672 ± 1.968c 63.917 ± 5.740c 56.266 ± 1.872c 132.028 ± 3.927c 136.310 ± 4.974c
Z3 51.533 ± 4.111bc 80.546 ± 1.971a 79.469 ± 5.121b 167.336 ± 6.181b 244.669 ± 9.127a
RV (cm3) Q0 0.824 ± 0.116b 1.256 ± 0.081ab 1.101 ± 0.034b 3.088 ± 0.117c 3.991 ± 0.151b
Q1 1.063 ± 0.063a 0.996 ± 0.091b 1.308 ± 0.054b 3.626 ± 0.131bc 2.637 ± 0.090c
Q2 0.596 ± 0.086b 1.239 ± 0.059ab 1.858 ± 0..071a 3.999 ± 0.187ab 4.114 ± 0.275b
Q3 0.694 ± 0.048b 1.518 ± 0.164a 1.971 ± 0.121a 4.654 ± 0.265a 4.870 ± 0.215a
Z0 0.599 ± 0.051b 1.313 ± 0.163ab 1.334 ± 0.338ab 2.763 ± 0.228b 3.359 ± 0.122c
Z1 0.810 ± 0.081a 1.339 ± 0.151ab 1.658 ± 0.071a 3.511 ± 0.213a 3.737 ± 0.122b
Z2 0.508 ± 0.030b 0.887 ± 0.085b 0.983 ± 0.060b 2.335 ± 0.087b 1.986 ± 0.111d
Z3 0.517 ± 0.036b 1.409 ± 0.120a 1.175 ± 0.154b 3.580 ± 0.126a 4.156 ± 0.116a
RAD (cm) Q0 0.151 ± 0.006b 0.171 ± 0.002ab 0.170 ± 0.003b 0.305 ± 0.005b 0.324 ± 0.004b
Q1 0.154 ± 0.003ab 0.163 ± 0.004b 0.170 ± 0.002b 0.332 ± 0.005a 0.309 ± 0.004c
Q2 0.169 ± 0.008a 0.174 ± 0.002a 0.194 ± 0.004a 0.316 ± 0.004b 0.337 ± 0.005a
Q3 0.152 ± 0.002b 0.178 ± 0.004a 0.195 ± 0.004a 0.332 ± 0.005a 0.347 ± 0.003a
Z0 0.144 ± 0.002b 0.143 ± 0.003a 0.151 ± 0.004c 0.317 ± 0.003ab 0.321 ± 0.004a
Z1 0.152 ± 0.003a 0.141 ± 0.003a 0.166 ± 0.003ab 0.326 ± 0.005a 0.326 ± 0.007a
Z2 0.146 ± 0.002ab 0.151 ± 0.006a 0.158 ± 0.002bc 0.305 ± 0.006b 0.294 ± 0.004b
Z3 0.139 ± 0.002b 0.144 ± 0.003a 0.169 ± 0.002a 0.329 ± 0.004a 0.328 ± 0.003a

RL indicates root length, RSA indicates root surface area, RV indicates root total volume, RAD indicated root average diameter. Q0 treatment of water, Q1 treatment with ABA, Q2 treatment with NaCl, Q3 treatment with ABA + NaCl in Chaoyouqianhao. Z0 treatment of water, Z1 treatment with ABA, Z2 treatment with NaCl, Z3 treatment with ABA + NaCl in Huanghuazhan. Values are mean ± standard error of four replicates (n = 4). Within each column, different letters indicate significant difference at the five percent significant level according to Duncan's multiple range tests.