Water relations parameters of root cortical cells of the ABA-deficient barley mutant Az34 in the absence (–ABA) and presence (+ABA) of exogenous ABA in the root medium (10 μm ABA)
| Variable . | –ABA . | +ABA . | P . |
|---|---|---|---|
| Cell turgor (MPa) | 0·48 ± 0·02 | 0·49 ± 0·01 | 0·673 |
| Cell elastic modulus (MPa) | 1·62 ± 0·19 | 1·34 ± 0·11 | 0·212 |
| Cell half-time of water exchange, T1/2 (s) | 9·48 ± 0·89 | 5·11 ± 0·63 | <0·001*** |
| Cell hydraulic conductivity, Lp (m s–1 MPa–1) | 1·90 ± 0·27 × 10–7 | 4·54 ± 0·60 × 10–7 | <0·001*** |
| Variable . | –ABA . | +ABA . | P . |
|---|---|---|---|
| Cell turgor (MPa) | 0·48 ± 0·02 | 0·49 ± 0·01 | 0·673 |
| Cell elastic modulus (MPa) | 1·62 ± 0·19 | 1·34 ± 0·11 | 0·212 |
| Cell half-time of water exchange, T1/2 (s) | 9·48 ± 0·89 | 5·11 ± 0·63 | <0·001*** |
| Cell hydraulic conductivity, Lp (m s–1 MPa–1) | 1·90 ± 0·27 × 10–7 | 4·54 ± 0·60 × 10–7 | <0·001*** |
Plants were analysed between 20 min and 2 h following the addition of ABA to the root medium. Cells were located within the root hair zone. Results are means ± s.e. of n = 23 cell analyses, which were obtained from the analysis of four roots each.
P < 0·001 (Student’s t-test).
Water relations parameters of root cortical cells of the ABA-deficient barley mutant Az34 in the absence (–ABA) and presence (+ABA) of exogenous ABA in the root medium (10 μm ABA)
| Variable . | –ABA . | +ABA . | P . |
|---|---|---|---|
| Cell turgor (MPa) | 0·48 ± 0·02 | 0·49 ± 0·01 | 0·673 |
| Cell elastic modulus (MPa) | 1·62 ± 0·19 | 1·34 ± 0·11 | 0·212 |
| Cell half-time of water exchange, T1/2 (s) | 9·48 ± 0·89 | 5·11 ± 0·63 | <0·001*** |
| Cell hydraulic conductivity, Lp (m s–1 MPa–1) | 1·90 ± 0·27 × 10–7 | 4·54 ± 0·60 × 10–7 | <0·001*** |
| Variable . | –ABA . | +ABA . | P . |
|---|---|---|---|
| Cell turgor (MPa) | 0·48 ± 0·02 | 0·49 ± 0·01 | 0·673 |
| Cell elastic modulus (MPa) | 1·62 ± 0·19 | 1·34 ± 0·11 | 0·212 |
| Cell half-time of water exchange, T1/2 (s) | 9·48 ± 0·89 | 5·11 ± 0·63 | <0·001*** |
| Cell hydraulic conductivity, Lp (m s–1 MPa–1) | 1·90 ± 0·27 × 10–7 | 4·54 ± 0·60 × 10–7 | <0·001*** |
Plants were analysed between 20 min and 2 h following the addition of ABA to the root medium. Cells were located within the root hair zone. Results are means ± s.e. of n = 23 cell analyses, which were obtained from the analysis of four roots each.
P < 0·001 (Student’s t-test).
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