Table I.
Concentrations of Glc, Fru, Suc, and different classes of fructans (μmol g fresh wt−1) and activities of 1-SST and acid invertase (units g fresh wt−1 min−1) in different tissues of a flowering T. officinale plant
| Xy | Ph | Lp | Lv | St | Re | |
|---|---|---|---|---|---|---|
| Glc | 5.9 | 7.2 | 4.7 | 75 | 108 | 34 |
| Fru | 8.7 | 4.9 | 5.6 | 10 | 70 | 56 |
| Suc | 11 | 8.2 | 8.4 | 9.4 | 1.8 | 21 |
| DP3-20 | 70 | 86 | 3.5 | 7.6 | 3.1 | 31 |
| DP21-50 | 22 | 48 | 0.1 | 0.2 | 0 | 1.4 |
| DP >50 | 1.1 | 3.6 | 0 | 0 | 0 | 0 |
| Total fructan | 93.1 | 137.6 | 3.6 | 7.8 | 3.1 | 32.4 |
| Maximal DP | 70 | 83 | 25 | 25 | 18 | 42 |
| 1-SST | 54 | 87 | 1 | 7 | 11 | 23 |
| Invertase | 20 | 17 | 8.3 | 68 | 820 | 262 |
Xy, Secondary root xylem; Ph, secondary root phloem; Lp, leaf intervenal parts; Lv, leaf veins; St, stalk; Re, receptacle.