Measurement of leaf lamina moisture with a low-cost electrical humidity sensor: case study on a wheat water-mutant

Table 1 ANOVA results for the differences among the genotypes (i.e., wild-type, water-mutant), leaf maturity (i.e., expanded, non-expanded) and their interactions for leaf electrical resistance, gravimetric moisture content (dry weight basis), moisture meter readings (MMRs) and MMR normalised (MMRnorm) to tissue water content

Parameter	Units of	Leaf sample	Genotypes		Leaf expansion		Interaction
Parameter	measure		F	P	F	P	F	P
Electrical resistance	MOhm cm⁻¹	Fresh	0.3	0.617	0.3	0.609	3.2	0.080
Electrical resistance	MOhm cm⁻¹	Re-humidified	0.1	0.758	0.3	0.566	1.9	0.174
Gravimetric moisture content	%	Fresh	1.1	0.303	0.1	0.757	1.6	0.216
Gravimetric moisture content	%	Re-humidified	0.8	0.366	2.7	0.1143	1.2	0.284
MMR	a.u. (nominal %)	Fresh	0.7	0.409	0.0	0.974	2.7	0.111
MMR	a.u. (nominal %)	Re-humidified	0.0	0.852	0.0	0.990	1.2	0.280
MMRnorm	% a.u. (gH₂O gDW⁻¹)⁻¹	Fresh	3.9	0.056	0.6	0.460	5.1	0.031*
MMRnorm	% a.u. (gH₂O gDW⁻¹)⁻¹	Re-humidified	0.5	0.471	7.0	0.012*	4.9	0.034*

ISSN: 1471-2229