accumulated from planting date to the date when the first aborted
fruit appears on the plant (MJm−2). Values of PTIsum(A1) and r7
were derived by curve fitting data of Exp 2 (Fig. 4a and b) and dependent
on LAmax (Fig. 4d and e), and their dependence on LAmax was
estimated, respectively, by Eqs. (8a) and (8b) in Appendix A.
The source/sink ratio (LA/nFG) and its seasonal time course can
then be determined by combining Eqs. (4)–(8) and Eqs. (8a) and
(8b).
3.4. Predicting the length of individual fruit
The length of the ith fruit growing on a plant (counted upward
from the first fruit) on day j (LF(i,j)) can be estimated using
Eq. (9):
LF(i, j) = RFL(i) × (PTIsum(j) − PTIsum(FG(i))) + LF(0) (9)
where PTIsum(FG(i)) is the PTI accumulated from planting date to
the date when the ith fruit growing on the plant appears (MJm−2),
and can be derived by combining Eqs. (6)–(8) and Eqs. (8a) and
(8b); LF(0) is the minimum threshold value used for fruit (length)
appearance measurements; RFL(i) is the average elongation rate of
the ith fruit growing on the plant (cm (MJm−2)−1), defined as the
accumulated from planting date to the date when the first aborted
fruit appears on the plant (MJm−2). Values of PTIsum(A1) and r7
were derived by curve fitting data of Exp 2 (Fig. 4a and b) and dependent
on LAmax (Fig. 4d and e), and their dependence on LAmax was
estimated, respectively, by Eqs. (8a) and (8b) in Appendix A.
The source/sink ratio (LA/nFG) and its seasonal time course can
then be determined by combining Eqs. (4)–(8) and Eqs. (8a) and
(8b).
3.4. Predicting the length of individual fruit
The length of the ith fruit growing on a plant (counted upward
from the first fruit) on day j (LF(i,j)) can be estimated using
Eq. (9):
LF(i, j) = RFL(i) × (PTIsum(j) − PTIsum(FG(i))) + LF(0) (9)
where PTIsum(FG(i)) is the PTI accumulated from planting date to
the date when the ith fruit growing on the plant appears (MJm−2),
and can be derived by combining Eqs. (6)–(8) and Eqs. (8a) and
(8b); LF(0) is the minimum threshold value used for fruit (length)
appearance measurements; RFL(i) is the average elongation rate of
the ith fruit growing on the plant (cm (MJm−2)−1), defined as the
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