Table 2 List of biophysical parameters measured during the present study.

From: Characterizing and screening of wheat genotypes under salinity stress condition using thermography and multivariate techniques

Measured Parameters

Unit

Methods/Instrument

Reference

Canopy temperature

°C

Thermal camera (Testo 890-1)

26

Leaf Area Index (LAI)

m2 m−2

Plant Canopy Analyzer (LAI-2200, LICOR inc.)

27

Normalized difference vegetation index (NDVI)

-

Handheld spectroradiometer

28

Photosynthesis (Pn)

µmol CO2 m−2 s−1

Enclosure method (LI-6400XT, LICOR inc. USA)

29

Stomatal conductance (Ig)

mol H2O m−2 s−1

Enclosure method

29

Transpiration rate (Trnmol)

mmol H2O m−2 s−1

Enclosure method

29

Total leaf chlorophyll

mg g −1 Fresh weight

Acetone method

30

Relative water content (RWC)

%

Imbibition and dehydration method

31

Membrane stability index (MSI)

 

EC method

32

Osmotic pressure (OP) of leaf

mmol kg−1

Wescor 5500 Vapor Pressure Osmometer

9

Leaf Na+ and K+

mg kg–1

Flame photometric method

33