Table 4.
Effect of auxin type and concentration of plant growth regulators on root induction in the ‘Shine Muscat’ cultivar.
| Plant Growth Regulators/Concentrations | % Rooting |
% Callusing |
Root Number |
Root Length (cm) |
Shoot Length (cm) |
|---|---|---|---|---|---|
| Control (MS medium) | 37.4 b | 0 d | 0.39 d | 0.68 c | 0.57 c |
| IAA 0.25 μM | 69.7 ab | 0 d | 2.18 bcd | 1.37 a | 1.11 abcd |
| IAA 0.50 μM | 70.5 ab | 0 d | 2.49 abcd | 1.24 ab | 1.18 abcd |
| IAA 1.0 μM | 70.8 ab | 0 d | 2.59 abcd | 1.18 abc | 1.23 abcd |
| IAA 2.0 μM | 67.8 ab | 0 d | 2.71 abcd | 1.04 abc | 1.46 abc |
| IAA 4.0 μM | 65.3 ab | 0 d | 2.54 abcd | 0.87 bc | 1.39 abc |
| IBA 0.25 μM | 81.1 a | 0 d | 2.29 bcd | 1.12 abc | 1.53 ab |
| IBA 0.50 μM | 83.7 a | 0 d | 2.79 abcd | 1.24 ab | 1.47 abc |
| IBA 1.0 μM | 86.8 a | 0 d | 3.42 ab | 1.29 ab | 1.63 a |
| IBA 2.0 μM | 70.4 ab | 11.8 cd | 2.57 abcd | 0.91 bc | 1.22 abcd |
| IBA 4.0 μM | 69.7 ab | 24.8 c | 1.84 c | 0.89 bc | 1.09 bcd |
| NAA 0.25 μM | 66.1 ab | 47.5 b | 1.80 c | 0.84 bc | 1.08 bcd |
| NAA 0.50 μM | 68.2 ab | 63.7 ab | 2.61 abcd | 1.04 abc | 0.89 de |
| NAA 1.0 μM | 70.3 ab | 70.5 ab | 2.97 abcd | 1.12 abc | 0.00 f |
| NAA 2.0 μM | 71.8 ab | 73.8 ab | 3.71 a | 0.94 abc | 0.00 f |
| NAA 4.0 μM | 75.7 ab | 80.2 a | 3.34 abc | 0.73 c | 0.00 f |
Note: Means followed by the same letter within each column are not significantly different at p < 0.05.