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Table 1 All parameters obtained through CT scan

From: Structural parameters for X-ray micro-computed tomography (μCT) and their relationship with the breakage rate of maize varieties

ParametersFeaturesFormulas or diagrams
Width (W)The left to right distance of 3D imageFigure 2
Length (L)The top to bottom distance of 3D imageFigure 2
Thickness (T)Distance between embryo side and endosperm side of 3D imageFigure 2
Aspect ratio (AR)The ratio of length to widthAR = 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 volumeSAg/Vg
Endosperm specific surface area (SSAen)The ratio of endosperm surface to volumeSAen/Ven
Embryo specific surface area (SSAem)The ratio of embryo surface to volumeSAem/Vem
Cavity specific surface area (SSAc)The ratio of cavity surface to volumeSAc/Vc
Endosperm volume ratio (VRen)The ratio of endosperm volume to grain volumeVen/Vg
Embryo volume ratio (VRem)The ratio of embryo volume to grain volumeVem/Vg
The cavity volume ratio (VRc)The ratio of cavity volume to grain volumeVc/Vg
Subcutaneous cavity volume ratio (VRsc)The ratio of subcutaneous cavity volume to grain volumeVsc/Vg
Embryo cavity volume ratio (VRemc)The ratio of embryo cavity volume to grain volumeVemc/Vg
Endosperm cavity volume ratio (VRenc)The ratio of endosperm cavity volume to grain volumeVenc/Vg
Density (DE)The ratio of grain mass to volumemg/Vg
Sphericity (SP)The ratio of surface area of the same volume sphere to grain surface aread/SAg
  1. d surface area of same volume sphere