Table 2.
Effect of endophytic bacteria (with or without O. anthropi Mn1 or O. anthropi Mn1g) and nitrogen fertilization on the root length, surface area, volume and number of root tips at 40 DAI
| CK × NL | CK × NM | CK × NH | Mn1 × NL | Mn1 × NM | Mn1 × NH | Mn1g × NL | Mn1g × NM | Mn1g × NH | |
|---|---|---|---|---|---|---|---|---|---|
| Root length (cm) | 273c | 193cd | 221cd | 285c | 410b | 320bc | 228d | 550a | 299bc |
| Surface area (cm2) | 55c | 42cd | 49cd | 55c | 87b | 63bc | 25d | 124a | 64bc |
| Root volume (cm3) | 0.9c | 0.7cd | 0.9cd | 0.9cd | 1.5b | 1.0c | 0.4d | 2.2a | 1.1bc |
| Number of root tips | 290ab | 231ab | 291ab | 271ab | 496ab | 462ab | 198b | 527a | 490ab |
CK, Mn1 and Mn1g: without inoculation, inoculation with O. anthropi Mn1 and O. anthropi Mn1g respectively. NL, NM and NH stand for low, medium and high nitrogen level with (NH4)2SO4 supply of 0, 2 and 10 mmol l–1 respectively. The test was significant at the 5% level (P ≤ 0.05) and shown with letters a, b, c and d.