Pre- and postharvest management of fruit quality.

New Zealand flower thrips (NZFT Thrips obscuratus) is the most abundant pest on New Zealand apricots at harvest and is a quarantine pest for apricot export markets Ethyl formate (EF) is a Generally Recognised As Safe (GRAS) compound being investigated treatments against NZFT and their impact on apricot fruit quality in shipping containers NZFT adults and larvae on apricots were treated in field bins of apricots in a 282 m3 in Hawkes Bay and Central Otago respectively In Hawkes Bay the treatments resulted in 100 mortality of NZFT adults and larvae In Central Otago the treatments resulted in 100 mortality of NZFT adults and 98100 larval mortality Export grade apricot cultivars expressed no adverse effects on quality to this concentration of EFCO2

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Pre- and postharvest management of fruit quality.

Blueberries ◽

10.1079/9781780647265.0343 ◽

2018 ◽

pp. 343-392

Author(s):

J. B. Retamales ◽

J. F. Hancock

Keyword(s):

Fruit Quality ◽

Postharvest Management

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UNDERSTANDING LINKS BETWEEN PREHARVEST CONDITIONS AND POSTHARVEST MANAGEMENT IN PRODUCTION CHAINS IS ONE OF THE KEYS TO ENSURING FRUIT QUALITY IN COMMERCIAL NETWORKS

Acta Horticulturae ◽

10.17660/actahortic.2010.880.23 ◽

2010 ◽

pp. 207-215

Author(s):

J. Joas ◽

C. Desvignes ◽

E. Vulcain ◽

M. Lechaudel

Keyword(s):

Fruit Quality ◽

Commercial Networks ◽

Postharvest Management

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Transcriptomics of Differential Ripening in ‘d’Anjou’ Pear (Pyrus communis L.)

Frontiers in Plant Science ◽

10.3389/fpls.2021.609684 ◽

2021 ◽

Vol 12 ◽

Author(s):

Loren Honaas ◽

Heidi Hargarten ◽

John Hadish ◽

Stephen P. Ficklin ◽

Sara Serra ◽

...

Keyword(s):

Fruit Quality ◽

Expression Patterns ◽

Pyrus Communis ◽

Accurate Estimation ◽

Pear Fruit ◽

Pome Fruit ◽

Tissue Samples ◽

European Pear ◽

Fruit Maturity ◽

Postharvest Management

Estimating maturity in pome fruits is a critical task that directs virtually all postharvest supply chain decisions. This is especially important for European pear (Pyrus communis) cultivars because losses due to spoilage and senescence must be minimized while ensuring proper ripening capacity is achieved (in part by satisfying a fruit chilling requirement). Reliable methods are lacking for accurate estimation of pear fruit maturity, and because ripening is maturity dependent it makes predicting ripening capacity a challenge. In this study of the European pear cultivar ‘d’Anjou’, we sorted fruit at harvest based upon on-tree fruit position to build contrasts of maturity. Our sorting scheme showed clear contrasts of maturity between canopy positions, yet there was substantial overlap in the distribution of values for the index of absorbance difference (IAD), a non-destructive spectroscopic measurement that has been used as a proxy for pome fruit maturity. This presented an opportunity to explore a contrast of maturity that was more subtle than IAD could differentiate, and thus guided our subsequent transcriptome analysis of tissue samples taken at harvest and during storage. Using a novel approach that tests for condition-specific differences of co-expressed genes, we discovered genes with a phased character that mirrored our sorting scheme. The expression patterns of these genes are associated with fruit quality and ripening differences across the experiment. Functional profiles of these co-expressed genes are concordant with previous findings, and also offer new clues, and thus hypotheses, about genes involved in pear fruit quality, maturity, and ripening. This work may lead to new tools for enhanced postharvest management based on activity of gene co-expression modules, rather than individual genes. Further, our results indicate that modules may have utility within specific windows of time during postharvest management of ‘d’Anjou’ pear.

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Assessing Preharvest Field Temperature and At-harvest Fruit Quality for Prediction of Soft Scald Risk of ‘Honeycrisp’ Apple Fruit during Cold Storage

HortScience ◽

10.21273/hortsci13558-18 ◽

2019 ◽

Vol 54 (5) ◽

pp. 910-915 ◽

Cited By ~ 1

Author(s):

Rachel Leisso ◽

Ines Hanrahan ◽

Jim Mattheis

Keyword(s):

Fruit Quality ◽

Cold Storage ◽

Titratable Acidity ◽

Apple Fruit ◽

Soluble Solids ◽

Ethylene Concentration ◽

Quality Control Laboratory ◽

Fruit Maturity ◽

Postharvest Management ◽

Soft Scald

‘Honeycrisp’ apple is susceptible to the postharvest chilling disorder soft scald that renders fruit unmarketable. Reducing or preventing this disorder is an important component of ‘Honeycrisp’ postharvest management. In commercial settings, advanced fruit maturity and orchard history contribute to an estimation of soft scald susceptibility, but additional at-harvest information indicative of soft scald risk would enable better management decisions. In this study, we obtained fruit from commercial orchards for 3 successive years, and assessed field growing degree days (GDD), field chilling hours (CH), and fruit quality metrics at harvest, followed by soft scald incidence assessment at 12 weeks of cold storage. The analyses indicated starch index, soluble solids content (SSC), internal ethylene concentration, titratable acidity (TA), peel background color, firmness, GDD, or CH do not reliably indicate fruit susceptibility to soft scald. However, SSC and TA were elevated in fruit that later developed soft scald, and a higher number of GDD also sometimes preceded soft scald, which is consistent with advanced fruit maturity that can enhance soft scald risk. Overall, results suggest that other tools may be required to accurately predict postharvest soft scald on a quality control laboratory scale. The statistical analyses applied to the present study would have utility for assessing other soft scald prediction tools or markers.

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Preharvest Foliar Salicylic Acid Sprays Reduce Cracking of Fig Fruit at Harvest

Applied Sciences ◽

10.3390/app112311374 ◽

2021 ◽

Vol 11 (23) ◽

pp. 11374

Author(s):

Athanasia D. Karantzi ◽

Mina Kafkaletou ◽

Giorgios Tsaniklidis ◽

Jinhe Bai ◽

Miltiadis V. Christopoulos ◽

...

Keyword(s):

Salicylic Acid ◽

Fruit Quality ◽

Low Cost ◽

High Sensitivity ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Total Anthocyanins ◽

Environmentally Safe ◽

Postharvest Management

Peel cracking and ostiole-end splitting (collectively termed cracking) are common disorders in ripe fig fruit, downgrading fruit quality and thus limiting marketability. This two-year field study addressed the possibility of alleviating cracking at harvest by two foliar salicylic acid (SA) sprays prior to harvest (8 and 5 d). Three SA concentrations (0, 1, and 2 mM) were employed in the first year, and based on the obtained results two (0 and 2 mM) in the second year. A local variety (‘Vasilika’) with excellent organoleptic profile, and high sensitivity to cracking was evaluated. Fruit was harvested at commercial maturity. Fruit marketability was mainly based on the incidence and severity of cracking. Fruit weight, peel color, flesh total soluble solids (TSS), titratable acidity (TA), and pH were estimated for fig quality. The contents of total anthocyanins (TAN), cyanidin-3-rutinoside (c-3-rut; the major anthocyanin in fig), and the expression of four genes coding for regulatory enzymes (phenylalanine ammonia lyase, anthocyanidin synthase, UDP-flavonoid glucosyl transferase 1, and UDP-flavonoid glucosyl transferase 2) of the phenylpropanoid biosynthetic pathway were also determined in the peel. Preharvest SA application (2 mM) increased the percentage of fruit without cracking (sound fruit) by 1.4–2.6-fold, and of marketable fruit (sound and slightly cracked) by 2-fold. SA application (2 mM) was associated with increased flesh TSS and TA, as well as with decreased flesh pH and peel red coloration in stripe. The treatment (2 mM SA) decreased both TAN and c-3-rut contents, which were highly associated (r = 0.978). Responses of transcription level of the four genes to SA application varied, and did not correlate with the other variables in the study. In conclusion, SA appears to be a low-cost and environmentally-safe agent for improving fig fruit quality and marketability, and facilitates harvesting and postharvest management of figs.

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Salicylic Acid Alleviates Postharvest Fruit Decay of Strawberry (Fragaria x ananassa Duch.-A Review

International Journal of Plant & Soil Science ◽

10.9734/ijpss/2021/v33i2030625 ◽

2021 ◽

pp. 20-27

Author(s):

Angrej Ali ◽

Amit Kumar ◽

Nazir Ahmad Ganai ◽

Khalid Rasool Dar ◽

Arif Hussain Wani i

Keyword(s):

Salicylic Acid ◽

Fruit Quality ◽

Potential Role ◽

Fragaria X Ananassa ◽

Biotic And Abiotic Stresses ◽

Synthetic Chemicals ◽

Long Duration ◽

Fruit Decay ◽

Postharvest Management ◽

Limited Scope

Strawberry (Fragaria x ananassa Duch.) fruits are highly perishable and fruit quality decrease rapidly after harvesting, thereby it has a limited scope of long duration storage. Among several synthetic chemicals suggested for minimizing postharvest losses of fruits, Salicylic acid (SA) is a natural phenolic compound widely distributed in plants and considered as a hormone because of its regulatory role in plants. Salicylic acid has received particular attention because of its role in the modulation of the plant response to biotic and abiotic stresses. Current scientific knowledge on the salicylic acid application in postharvest management of strawberry fruits suggests that SA has a potential role in minimizing fruit decay and maintaining fruit quality. These predictors, however, need further work to validate reliability in postharvest management of strawberry fruits in a larger perspective.

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Postharvest management of New Zealand flower thrips (Thrips obscuratus) on apricots using ethyl formate or pyrethrumbased treatments

New Zealand Plant Protection ◽

10.30843/nzpp.2013.66.5626 ◽

2013 ◽

Vol 66 ◽

pp. 63-74

Author(s):

A. Chhagan ◽

L.E. Jamieson ◽

M.J. Griffin ◽

N.E.M. Page-Weir ◽

J. Poulton ◽

...

Keyword(s):

New Zealand ◽

Fruit Quality ◽

Ethyl Formate ◽

Lethal Concentration ◽

Internal Damage ◽

Flower Thrips ◽

Postharvest Treatments ◽

Postharvest Management ◽

Thrips Obscuratus ◽

Effective Treatments

New Zealand flower thrips (NZFT Thrips obscuratus (Crawford)) were exposed to a range of ethyl formate (EF) and pyrethrumbased postharvest treatments on apricots Research showed that EFCO2 or EFN2 were effective treatments against NZFT and caused negligible damage to apricot fruit quality However pyrethrum dipping did not effectively control NZFT and caused significant internal damage to apricot fruit Lethal concentration (LC99) estimates were developed for adult and larval NZFT using a range of EF concentrations (0127 EFCO2) and temperatures (5 15 and 25C) It is estimated that treatments of 1 (307 g/m3) EF at 5 or 25C or a higher concentration of 15 (463 g/m3) at 15C will achieve 99 mortality of NZFT adults and larvae on apricot fruit with 95 confidence

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