Table 3.
Physiological age | Photosynthetic surfaces | Internodes | Seeds | |
---|---|---|---|---|
Sink strength | 1 | 1 | 0·03 | |
2 | 0·95 | 3·13 | ||
3 | 0·67 | 3·57 | ||
4 | 0·10 | 0·10 | 0·22 | |
5 | 0·17 | 0·19 | 0·35 | |
Sink functions | aO/(aO + bO) | 0·67 | 0·62 | 0·41 |
a | 2·43 | 21·71 | 2·76 | |
Photosynthetic efficiency (g MJ−1 m−2) | 7·04 |
Physiological age 1: rosette stage; physiological age 2: main stem during plant bolting; physiological age 3: ramification; physiological age 4: flowering and pod growth on the main stem; physiological age 5: flowering and pod growth on the ramification. Photosynthetic surfaces during physiological ages 1–3: leaves; during physiological ages 4 and 5: pod envelopes. Internodes during physiological ages 1–3: internodes of the stem; during physiological ages 4 and 5: internodes of the racemes. a and b are parameters of the beta-function (see Materials and Methods).