Table 1 Narrow vegetation indices for phenotyping specific traits in plants

Water index

WI

\({\rho }_{900} / {\rho }_{970}\)

[49]

Photochemical reflectance index

PRI-1

\(({\rho }_{531}-{\rho }_{570}) / {(\rho }_{531}+ {(\rho }_{570}\))

[51]

Photochemical reflectance index

PRI-2

\(({\rho }_{570}-{\rho }_{539}) / {(\rho }_{570}+ {\rho }_{539}\))

[68]

Red-green index

RGI

\({\rho }_{690} / {\rho }_{550}\)

[76]

Normalized difference water index

NDWI

\({\rho }_{970} / {\rho }_{900}\)

[49]

Carotenoids reflectance index-1

CARI-1

\({\rho }_{510} /{\rho }_{550}\)

[55]

Carotenoids reflectance index-2

CARI-2

\((1/{\rho }_{510}) / (1/ {\rho }_{700}\))

[55]

Plant senescence reflectance index

PSRI

\(({\rho }_{680}-{\rho }_{500}) / {(\rho }_{750}\))

[77]

Normalized pigment chlorophyll index

NPCI

\(({\rho }_{680}-{\rho }_{430}) / {(\rho }_{680}+ {(\rho }_{430}\))

[69]

Pigment specific simple ratio for chlorophyll-a

PSSR-b

\({\rho }_{800 } / {\rho }_{650}\)

[78]

Pigment specific simple ratio for chlorophyll-b

PSSR-a

\({\rho }_{800} / {\rho }_{675}\)

[78]

Anthocyanin reflectance index-1

ARI-1

\((1/{\rho }_{550}) / (1/ {\rho }_{700}\))

[57]

Anthocyanin reflectance index-2

ARI-2

\({\rho }_{800} (1/{\rho }_{550}) / (1/ {\rho }_{700}\))

[57]

Structure insensitive pigment index

SIPI-1

\(({\rho }_{800}-{\rho }_{450}) / {(\rho }_{800}+ {(\rho }_{650}\))

[58]

Structure insensitive pigment index

SIPI-2

\({\rho }_{800}-{\rho }_{440}) / {(\rho }_{800}+ {(\rho }_{680})\)

[58]