Table I.
Composition of epicuticular wax on segments of leek leaves
| Fatty Acid and Derivative | Ia
|
II
|
III
|
IV
|
V
|
VI
|
VII
|
|---|---|---|---|---|---|---|---|
| 0–3 cmb | 3–5 cm | 5–7 cm | 7–9 cm | 9–14 cm | 14–19 cm | 19–24 cm | |
| nmol/cm2 area | |||||||
| Hexadecanoic acid | 1.6 (0.6) | 0.67 (0.2) | 1.1 (1) | 2.5 (2) | 3.3 (1) | 5.3 (1) | 6.0 (1) |
| Octadecanoic acid | 0.78 (0.4) | 0.10 (0.1) | 0.23 (0.2) | 0.21 (0.1) | 1.0 (0.4) | 1.6 (0.7) | 1.7 (0.4) |
| Eicosanoic acid | 0.00 (0.0) | 0.18 (0.2) | 1.2 (1) | 2.1 (1) | 2.8 (0.9) | 3.2 (0.3) | 3.5 (0.9) |
| Docosanoic acid | 0.18 (0.1) | 0.00 (0.0) | 0.54 (0.5) | 1.0 (0.5) | 1.4 (0.5) | 1.7 (0.3) | 2.0 (0.3) |
| Hexacosanal | 0.00 (0.0) | 0.00 (0.0) | 0.01 (0.0) | 0.2 (0.0) | 0.09 (0.1) | 0.51 (0.2) | 0.66 (0.2) |
| Octacosanal | 0.00 (0.0) | 0.00 (0.0) | 0.05 (0.0) | 0.17 (0.1) | 0.49 (0.2) | 1.7 (0.5) | 1.8 (0.5) |
| n-Nonacosane | 0.02 (0.0) | 0.01 (0.0) | 0.07 (0.0) | 0.13 (0.1) | 0.38 (0.1) | 1.0 (0.2) | 1.1 (0.3) |
| Triacontanal | 0.00 (0.0) | 0.00 (0.0) | 0.00 (0.0) | 0.07 (0.1) | 0.25 (0.1) | 1.1 (0.3) | 0.93 (0.3) |
| n-Hentriacontane | 0.00 (0.0) | 0.01 (0.0) | 0.31 (0.2) | 0.86 (0.3) | 2.7 (0.7) | 6.3 (2) | 5.5 (1) |
| Hentriacontan-16-one | 0.00 (0.0) | 0.03 (0.0) | 4.8 (2) | 18 (6) | 31 (6) | 36 (4) | 38 (3) |
| Total | 2.6 | 1.0 | 8.3 | 25 | 43 | 58 | 61 |
Values are presented as averages with ses in parentheses (n = 3 for fatty acid; n = 6 for other components). Distance measurements are from the leaf base.
a
Segment number.
b
Distance.