| Gamma irradiation × stage of vegetative bud | No. of roots plant−1 | Root length plant−1 (cm) | Dry weight of shoot plant−1 (g) | Dry weight of roots plant−1 (g) | Total dry matter plant−1 (g) |
| G0S1 G0S2 G0S3 | 14.7d 12.0f 12.3ef | 15.3a 13.7b 12.2bc | 4.7a 4.3ab 4.1ab | 0.48bc 0.55ab 0.46ba | 5.2a 4.8ab 4.5ab |
| G1S1 G1S2 G1S3 | 19.0a 17.7b 15.0cd | 16.5a 15.0ab 13.7b | 4.9a 4.6a 4.3ab | 0.67a 0.55ab 0.51b | 5.6a 5.1a 4.8ab |
| G2S1 G2S2 G2S3 | 18.0ab 16.0c 13.3e | 16.0a 14.0b 13.2bc | 4.8a 4.5a 4.2ab | 0.63a 0.52b 0.51b | 5.4a 5.0a 4.7ab |
| G3S1 G3S2 G3S3 | 14.7d 12.0f 9.3g | 13.7b 13.0bc 10.3c | 4.6a 3.4b 3.3b | 0.47bc 0.40c 0.41c | 5.1a 3.9b 3.8b |