From: 3D characterization of walnut morphological traits using X-ray computed tomography
Morphological trait | Symbol | Description | Unit |
---|---|---|---|
Nut | |||
Nut length | L | The largest length of the nut from the base to the end | mm |
Nut face diameter | F | The largest longitudinal section of the nut through suture | mm |
Nut profile diameter | P | The largest longitudinal section of the nut perpendicular to suture | mm |
Nut volume | Vn | Total volume of the nut, Vn = Vs + Vk + Ve | mm3 |
Nut shape VA3D | S1 | Shape factor of the nut | – |
Nut feret shape 3D | S2 | Feret shape factor of the nut | – |
Nut surface area | A | Surface area of the nut | mm2 |
Nut sphericity | Ψ | Index of nut roundness | – |
Shell | |||
Shell volume | Vs | Volume of the shell | mm3 |
Shell thickness | T | Thickness of the shell | mm |
Shell rugosity | Ω | Index of shell surface roughness | – |
Kernel | |||
Kernel volume | Vk | Volume of the kernel | mm3 |
Kernel filling ratio | R | Ratio of the kernel volume Vk to the total volume of the nut Vn | % |
Empty Space | |||
Empty space volume | Ve | Volume of the empty space | mm3 |