Table 3 Alleviation of salinity stress on the micropropagated Paulownia under the effect of proline concentration
From: Salinity tolerance improvement of in vitro propagated Paulownia tomentosa using proline
Character treatment | Survival % | Shootlets number/explant | Shootlet length (mm) | Nodes number/shootlet | Rooting% | Roots number | Root length (mm) |
|---|---|---|---|---|---|---|---|
Control | 100.00 a | 2.44 a | 51.67 a | 46 a | 100 a | 7.25 b | 115 a |
0.5 g NaCl + 0.2 g proline | 100.00 a | 1.61 b | 57.92 a | 41.33 b | 100 a | 12 a | 108.3 a |
0.5 g NaCl + 0.4 g proline | 100.00 a | 1.50 bc | 27.00 b | 12.67 c | 55.67 b | 6.98 b | 90.00 a |
1.0 g NaCl + 0.2 g proline | 100.00 a | 1.33 bcd | 27.11 b | 12.33 cd | 22.22 b | 0.67 c | 11.78 c |
1.0 g NaCl + 0.4 g proline | 89.00 a | 1.28 bcde | 20.11 bc | 12.00 cd | 66.67 a | 7.33 b | 51.67 b |
2.0 g NaCl + 0.2 g proline | 78.00 ab | 1.17 cde | 19.11 bc | 12.00 cd | 0 | 0 | 0 |
2.0 g NaCl + 0.4 g proline | 61.33 b | 1.11 de | 15.00 c | 9.17 cde | 0 | 0 | 0 |
4.0 g NaCl + 0.2 g proline | 38.67 c | 1.00 de | 15.33 c | 8.67 de | 0 | 0 | 0 |
4.0 g NaCl + 0.4 g proline | 22.00 c | 0.92 e | 15.33 c | 6.67 e | 0 | 0 | 0 |