Parameters | Features | Formulas or diagrams |
---|---|---|
Width (W) | The left to right distance of 3D image | Figure 2 |
Length (L) | The top to bottom distance of 3D image | Figure 2 |
Thickness (T) | Distance between embryo side and endosperm side of 3D image | Figure 2 |
Aspect ratio (AR) | The ratio of length to width | AR = L/W |
Weight (mg) | The weight of single grain | – |
Grain volume (Vg) | The whole volume of grain 3D image | – |
Endosperm volume (Ven) | The whole volume of endosperm 3D image | – |
Embryo volume (Vem) | The whole volume of embryo 3D image | – |
Cavity volume (Vc) | The whole volume of cavity 3D image | – |
Subcutaneous cavity volume (Vsc) | The volume of subcutaneous cavity | – |
Embryo cavity volume (Vemc) | The volume of embryo cavity | – |
Endosperm cavity volume (Venc) | The volume of endosperm cavity | – |
Grain surface area (SAg) | The surface area of grain 3D image | – |
Endosperm surface area (SAen) | The surface area of endosperm 3D image | – |
Embryo surface area (SAem) | The surface area of embryo 3D image | – |
Cavity surface area (SAc) | The surface area of cavity 3D image | – |
Grain specific surface area (SSAg) | The ratio of grain surface to volume | SAg/Vg |
Endosperm specific surface area (SSAen) | The ratio of endosperm surface to volume | SAen/Ven |
Embryo specific surface area (SSAem) | The ratio of embryo surface to volume | SAem/Vem |
Cavity specific surface area (SSAc) | The ratio of cavity surface to volume | SAc/Vc |
Endosperm volume ratio (VRen) | The ratio of endosperm volume to grain volume | Ven/Vg |
Embryo volume ratio (VRem) | The ratio of embryo volume to grain volume | Vem/Vg |
The cavity volume ratio (VRc) | The ratio of cavity volume to grain volume | Vc/Vg |
Subcutaneous cavity volume ratio (VRsc) | The ratio of subcutaneous cavity volume to grain volume | Vsc/Vg |
Embryo cavity volume ratio (VRemc) | The ratio of embryo cavity volume to grain volume | Vemc/Vg |
Endosperm cavity volume ratio (VRenc) | The ratio of endosperm cavity volume to grain volume | Venc/Vg |
Density (DE) | The ratio of grain mass to volume | mg/Vg |
Sphericity (SP) | The ratio of surface area of the same volume sphere to grain surface area | d/SAg |