Table 1 Mechanical properties of internode at rank 3 of maize stem and phenotypic traits for six cultivars in 2016
Cultivars | Young’s modulus (103 MPa) | Maximum bending load (N) | Maximum transverse displacement (mm) | Plant height (mm) | Plant azimuthal deviation (°) | Leaf number | Leaf inclination angle (°) | Ear number | Ear height (mm) | Ear length (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
ZD958 | 64.1 ± 8.1a | 365.7 ± 25.7a | 9.0 ± 0.8a | 221.4 ± 12.4b | 28.3 ± 4.0a | 12.8 ± 0.6a | 62.2 ± 2.8b | 2.5 ± 0.3a | 85.2 ± 6.4b | 28.4 ± 1.9a |
JD38 | 90.0 ± 1.4a | 406.6 ± 6.7a | 9.3 ± 0.4a | 239.6 ± 4.5ab | 29.0 ± 3.1a | 11.4 ± 0.4ab | 63.5 ± 1.7ab | 1.4 ± 0.2b | 88.7 ± 4.7b | 27.6 ± 1.6a |
XD20 | 67.0 ± 2.3a | 366.6 ± 23.4a | 8.1 ± 0.9a | 256.0 ± 3.5a | 22.5 ± 4.0a | 11.6 ± 0.4ab | 69.8 ± 0.6a | 1.6 ± 0.2ab | 120.1 ± 2.6a | 26 ± 0.6a |
XY335 | 98.2 ± 8.9a | 421.6 ± 47.2a | 8.1 ± 1.5a | 259.0 ± 3.0a | 20.2 ± 3.1a | 10.2 ± 0.2b | 63.9 ± 1.2ab | 1.4 ± 0.2b | 91 ± 3.2b | 27.8 ± 1.8a |
JK665 | 83.6 ± 13.7a | 422.7 ± 70.7a | 8.3 ± 0.7a | 260.7 ± 3.5a | 20.6 ± 2.9a | 13.0 ± 0.3a | 61.7 ± 1.6b | 2.0 ± 0ab | 90.2 ± 6.6b | 32.2 ± 1.2a |
JK968 | 85.3 ± 7.5a | 432.0 ± 34.5a | 8.1 ± 0.4a | 236.8 ± 8.6ab | 19.0 ± 1.3a | 12.0 ± 0.3a | 65.6 ± 1.7ab | 1.6 ± 0.2ab | 103.2 ± 9.5ab | 30.6 ± 2a |
P | ns | ns | ns | ** | ns | ** | * | * | ** | ns |