Selection of a Proper Maturity Index for the Mechanical Harvesting of ‘Mihong’ Peach Fruit

Jayasooriya, L. Sugandhi Hirushika; Shin, Mi Hee; Wijethunga, W M U D; Lee, Seul Ki; Cho, Jung Gun; Jang, Si Hyeong; Kim, Jin Gook

doi:10.3390/horticulturae9070730

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…Additionally, a handful of candidate genes involved in the accumulation of soluble sugars, organic acids and aromas as well as fruit softening have been identified in peach (Gu et al ., 2016; Peng et al ., 2020; Cao et al ., 2021; Wang et al ., 2021; Yu et al ., 2021). Maturity index, an indicator of the readiness for harvest, is closely related to fruit taste and flesh firmness (Jayasooriya et al ., 2023), but the related mechanisms remain largely elusive.…”

Section: Introductionmentioning

confidence: 99%

Two adjacent NAC transcription factors regulate fruit maturity date and flavor in peach

Zhang,

Liu,

Zhang

et al. 2023

New Phytologist

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Summary Although maturity date (MD) is an essential factor affecting fresh fruit marketing and has a pleiotropic effect on fruit taste qualities, the underlying mechanisms remain largely unclear. In this study, we functionally characterized two adjacent NAM‐ATAF1/2‐CUC2 (NAC) transcription factors (TFs), PpNAC1 and PpNAC5, both of which were associated with fruit MD in peach. PpNAC1 and PpNAC5 were found capable of activating transcription of genes associated with cell elongation, cell wall degradation and ethylene biosynthesis, suggesting their regulatory roles in fruit enlargement and ripening. Furthermore, PpNAC1 and PpNAC5 had pleiotropic effects on fruit taste due to their ability to activate transcription of genes for sugar accumulation and organic acid degradation. Interestingly, both PpNAC1 and PpNAC5 orthologues were found in fruit‐producing angiosperms and adjacently arranged in all 91 tested dicots but absent in fruitless gymnosperms, suggesting their important roles in fruit development. Our results provide insight into the regulatory roles of NAC TFs in MD and fruit taste.

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Section: Introductionmentioning

confidence: 99%

Two adjacent NAC transcription factors regulate fruit maturity date and flavor in peach

Zhang,

Liu,

Zhang

et al. 2023

New Phytologist

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Assessing the Impact of Elevated Day and Night Temperatures on Flesh Red Coloration and Diminished Quality in Peaches

Jayasooriya,

Kwack,

Shin

et al. 2024

HST

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In South Korea, the prevalence of red coloration in peach flesh has been widely documented in recent years owing to elevated temperatures triggered by climate change. This study implemented soil-fruit-daylight-system (SFDS) artificial chambers that maintained four distinct day and night temperature categories to provide an overview of the effects of high temperatures on flesh discoloration and reduced fruit quality in 'Daewol' peaches. The day and night temperatures in each chamber were maintained as 1; 20°C/10°C; 2; 25°C/15°C; 3; 30°C/20°C; and 4; 35°C/25°C, while all other external factors remained constant. Changes in flesh color and the physicochemical quality characteristics related to flesh were assessed under these conditions over two consecutive years, 2022 and 2023. The significantly lowest fruit weight was observed in the 30°C/20°C and 35°C/25°C chambers, where tropical night phenomena were demonstrated. A remarkably higher soluble solids content was reported from the 35°C/25°C chamber, with firmness however not showing a significant difference among the chambers. Peach flesh displayed excessive red/brown coloration in the 30°C/20°C and 35°C/25°C chambers, exhibiting higher a * values, lower hue values, and color development index (CDI) values beyond 0.5 ± 0.01, where 0.5 signifies maximum yellowness. Furthermore, the markedly highest reddish pulp index was observed in the chambers with temperatures set to 30°C/20°C and 35°C/25°C. These findings emphasize that reddish pulp disorder intensifies with elevated temperatures as a result of climate change. Hence, it is crucial to prioritize and address this issue to maintain a steady peach production process and improve peach quality levels ultimately to meet the demand for peach fruit. This requires the prompt adoption of strategies such as appropriate irrigation, shading methods to protect the fruits from intense sunlight, and choosing peach varieties that can withstand high temperatures.

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Selection of a Proper Maturity Index for the Mechanical Harvesting of ‘Mihong’ Peach Fruit

Cited by 2 publications

References 39 publications

Two adjacent NAC transcription factors regulate fruit maturity date and flavor in peach

Two adjacent NAC transcription factors regulate fruit maturity date and flavor in peach

Assessing the Impact of Elevated Day and Night Temperatures on Flesh Red Coloration and Diminished Quality in Peaches

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