Abstract
As root electrical capacitance (CR*) was assumed to depend on the stem properties, the efficiency of measuring CR* at flowering for whole-plant phenotyping was assessed in five wheat cultivars in three replicate plots over two years. Linear regression analysis was used to correlate CR* with plant-size parameters and flag-leaf traits (extension and SPAD chlorophyll content) at flowering, and with yield components at maturity. The plot-mean CR* was correlated with the plot leaf area index (LAI), the chlorophyll quantity (LAI×SPAD), and the grain yield across years. At plant scale, CR* was found to show the strongest positive regression with total chlorophyll in the flag leaf (flag leaf area × SPAD; R2: 0.65−0.74) and with grain mass (R2: 0.55−0.70) for each cultivar and year (p < 0.001). Likewise, at plot scale, the regression was strongest between CR* and the LAI×SPAD value (R2: 0.86−0.99; p < 0.01) for the cultivars. Consequently, CR* indicated the total plant nutrient and photosynthate supply at flowering, which depended on root uptake capacity, and strongly influenced the final yield. Our results suggested that the polarization of the active root membrane surfaces was the main contributor to CR*, and that the measurement could be suitable for evaluating root size and functional intensity. In conclusion, the capacitance method can be applied for nondestructive whole-plant phenotyping, with potential to estimate root and shoot traits linked to the nutrient supply, and to predict grain yield. CR* can be incorporated into allometric models of cereal development, contributing to optimal crop management and genetic improvement.
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Claims 11
Claim · model-written summary
At plant scale, root electrical capacitance had the strongest positive regression with total flag-leaf chlorophyll.
- Taxon
- wheat
Triticum aestivume0 - Material
- five wheat cultivarse0
- Organ / stage
- flag leafe1
- Outcome
- total chlorophyll in the flag leafe1
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e1“At plant scale, CR* was found to show the strongest positive regression with total chlorophyll in the flag leaf”
Claim · model-written summary
At plant scale, root electrical capacitance had a positive regression with grain mass.
- Taxon
- wheatTriticum aestivume0
- Material
- five wheat cultivarse0
- Outcome
- grain masse2
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e1“At plant scale, CR* was found to show the strongest positive regression with total chlorophyll in the flag leaf”
e2“and with grain mass”
Claim · model-written summary
Plot-mean root electrical capacitance was correlated with plot leaf area index at flowering.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- floweringe4
- Outcome
- plot leaf area index (LAI)e3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e3“The plot-mean CR* was correlated with the plot leaf area index (LAI)”
e4“the efficiency of measuring CR* at flowering”
Claim · model-written summary
Plot-mean root electrical capacitance was correlated with grain yield across years.
- Taxon
- wheatTriticum aestivume0
- Material
- five wheat cultivarse0
- Outcome
- grain yielde5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e5“the grain yield across years”
Claim · model-written summary
At plot scale, the regression of root electrical capacitance was strongest with LAI×SPAD.
- Taxon
- wheatTriticum aestivume0
- Material
- five wheat cultivarse0
- Outcome
- LAI×SPAD valuee6
- Direction
- strongeste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e6“the regression was strongest between CR* and the LAI×SPAD value”
Claim · model-written summary
Root electrical capacitance indicated total plant nutrient and photosynthate supply at flowering, which depended on root uptake capacity.
- Taxon
- wheatTriticum aestivume0
- Outcome
- total plant nutrient and photosynthate supply at floweringe7
- Qualifier
- root uptake capacitye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e7“CR* indicated the total plant nutrient and photosynthate supply at flowering, which depended on root uptake capacity”
Claim · model-written summary
Root electrical capacitance strongly influenced final yield.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- floweringe2
- Outcome
- final yielde1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e1“and strongly influenced the final yield”
e2“the efficiency of measuring CR* at flowering”
Claim · model-written summary
The polarization of active root membrane surfaces is the main contributor to root electrical capacitance.
- Taxon
- wheatTriticum aestivume0
- Outcome
- CR*e3
- Qualifier
- polarization of the active root membrane surfacese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e3“Our results suggested that the polarization of the active root membrane surfaces was the main contributor to CR*”
Claim · model-written summary
The measurement could be suitable for evaluating root size and functional intensity.
- Taxon
- wheatTriticum aestivume0
- Outcome
- evaluating root size and functional intensitye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e4“the measurement could be suitable for evaluating root size and functional intensity”
Claim · model-written summary
The capacitance method can be applied for nondestructive whole-plant phenotyping of wheat.
- Taxon
- wheatTriticum aestivume0
- Outcome
- nondestructive whole-plant phenotypinge5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e5“the capacitance method can be applied for nondestructive whole-plant phenotyping”
Claim · model-written summary
Root electrical capacitance can be incorporated into allometric models of cereal development.
- Taxon
- wheatTriticum aestivume0
- Outcome
- allometric models of cereal developmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five wheat cultivars”
e6“CR* can be incorporated into allometric models of cereal development”