Fluorescence indices for monitoring the ripening of tomatoes in pre- and postharvest phases

Suitability of fluorescence indices for the estimation of fruit maturity compounds in tomato fruits

“…Fruit from plants cultivated under water defiency (wd‐fruits) matured faster than their control fruits, reaching the breaker stage 4 days earlier than control fruits. This finding suggests an accelerated maturation and confirms earlier studies from our group targeting the accelerated process of tomato ripening due to a lower water supply monitored with the multiparametric fluoresence sensor …”

“…This finding suggests an accelerated maturation and confirms earlier studies from our group targeting the accelerated process of tomato ripening due to a lower water supply monitored with the multiparametric fluoresence sensor. 22 For the nondestructive SFR_R index, wd-fruits presented significantly higher values for days 0, 17, and 20 than their control fruits ( Fig. 1(B)).…”

“…A similar development for this index was found in a pre-harvest monitoring of tomato fruit ripening. 22 Again, fruits from the wd treatment revealed an earlier maximum than control fruits.…”

“…Multiparametric fluorescence recordings have been used to evaluate ripening and quality attributes of apples, 4 classify maturity of oil palm bunches, 17 and to monitor maturation [18][19][20] and anthocyanin content in grapes. 21 In our group, Hoffmann et al 22 proposed for the first time the use of fluorescence-based recordings to assess ripening of tomatoes in the pre-and postharvest phases without exploring the precise relationship between the recordings and the biochemical quality attributes. Besides the time-course of the indices depending on the different growing conditions and maturity stages, the focus of the current study was to explore the relationship between the compound concentrations and fluorescence and reflectance recordings.…”

Sensing Technologies for Precision Phenotyping in Vegetable Crops: Current Status and Future Challenges

“…Examples are reported in tomato and leafy vegetables. In tomato [114], by means of a handheld multiparametric sensor (Multiplex ® 3, Force-A, Orsay, France), different indices were determined, reflecting the changes in the composition and distribution of pigments in pre-and postharvesting due to physiological changes during maturation. Comparison with other reflectance and remittance methods was made, evidencing how fluorescence enabled more precise differentiation and a superior quality.…”