Table 3.
Kinetics of deterioration in seed samples of pure and mixed mixtures stored at 35 °C and different water contents. Deterioration is expressed as the time for seed quality to decrease to 75 and 50% of initial germination (P75 and P50, respectively). Time course data for L. sativa seeds (2004 cohort) is provided in Fig. 5. Data for unmixed L. sativa seeds are from Mira et al. (2010) with additional sample times for the dry treatment added
| Treatment | Species/mixture | Water content (g g–1 dw±SE) | Seed longevity (days±SE) | |
|---|---|---|---|---|
| P75 | P50 | |||
| L. sativa | 0.089 | 16±4 | 27±4 | |
| L. sativa (+E. vesicaria) | 0.086 | 25±1 | 35±1 | |
| L. sativa (+C. carvi) | 0.090 | 19±1 | 25±1 | |
| E. vesicaria (+L. sativa) | 0.102 | 42±1 | 55±1 | |
| C. carvi (+L. sativa) | 0.125 | 0.3±0.1 | 0.9±0.1 | |
| Dry | L. sativa | 0.046 | 550±67 | 1 056±109 |
| L. sativa (+E. vesicaria) | 0.046 | 445±29 | 675±34 | |
| L. sativa (+C. carvi) | 0.048 | 643±175 | 1 108±331 | |
| E. vesicaria (+L. sativa) | 0.048 | 1 178±66 | 1 703±73 | |
| C. carvi (+L. sativa) | 0.064 | 7±6 | 76±4 | |
| Very dry | L. sativa | 0.030 | 567±70 | 882±18a |
| L. sativa (+E. vesicaria) | 0.029 | 3 021±753 | 4 470±1 185 | |
| L. sativa (+C. carvi) | 0.033 | 2 341±475 | 3 407±723 | |
| E. vesicaria (+L. sativa) | 0.036 | 2 281±132 | 3 379±203 | |
| C. carvi (+L. sativa) | 0.043 | 61±17 | 225±17 | |
a This value was obtained by extrapolating a logistic model beyond the last sampling time of 550 days (Mira et al., 2010).