Table 1.
Parameters of the hydrotime model for seed germination of seven Agave species under three substrate water potentials (-0.03, -1.0 and -1.5 MPa)
| Species | θ H (MPa h) | Ψ b(50) (MPa) | σ Ψb (MPa) | r 2 |
|---|---|---|---|---|
| A. americana var. marginata | 142 | -2.01 | 0.44 | 0.823 |
| A. asperrima | 158 | -1.58 | 0.37 | 0.881 |
| A. cupreata | 190 | -1.82 | 0.46 | 0.814 |
| A. duranguensis | 137 | -1.68 | 0.58 | 0.775 |
| A. lechuguilla | 153 | -1.84 | 0.36 | 0.892 |
| A. salmiana | 282 | -2.64 | 0.81 | 0.768 |
| A. striata | 176 | -2.02 | 0.41 | 0.829 |
θH: hydrotime constant; Ψb(50): base water potential; σΨb: standard deviation of Ψb(50); r 2: determination coefficient.