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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

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

  1. d surface area of same volume sphere