ratio of the harvest standard of fruit length (LF(H)) to the PTIsum
required for the fruit to reach LF(H) (PTIsum(i)) (Eq. (10)):
RFL(i) = LF(H) − LF(0)
PTIsum(i)
(10)
where PTIsum(i) was derived by curve fitting data of Exp 2 and
dependent on the average sink/source ratio LA/nFG(i) during the
growing period of the ith fruit growing on the plant (Fig. 5a) and
LF(H) (Fig. 5b).PTIsum(i) was estimated using Eqs. (10a) and (10b).
3.5. Predicting harvest date and fresh weight of individual fruit,
number of fruits harvested and yield per plant
Harvest date of individual fruit growing on a plant can be determined
as the date when its length reaches LF(H) and derived by
combining Eqs. (9) and (10) and Eqs. (10a) and (10b).
Fresh weight of individual fruit growing on a plant (WF(i)) was
estimated using Eq. (11) by curve fitting data of Exp 2 (Fig. 6):
WF(i) = r12 × (LF (i))3 (11)
where LF(i) is the length of the ith fruit growing on a plant (cm), r12
is a variety (shape of fruit) dependent coefficient.
Number of fruits harvested on a plant on day j (nFH(j)) can be
estimated using Eqs. (12) and (13):