Preharvest spray application of methyl jasmonate promotes fruit colour and regulates quality in M7 Navel orange grown in a Mediterranean climate

Rehman, Muneer; Singh, Zora; Khurshid, T.; Malekipoor, Rahil; Tokala, Vijay Yadav

doi:10.21475/ajcs.21.15.03.p2812

Cited by 5 publications

(2 citation statements)

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“…The results of firmness above cited are in agreement with a study of (Zaghloul et al, 2017), in which 4 concentrations of kaolin 1%, 2%, 3% and 4% were applied on balady mandarin trees, and after fruit cold storage, all kaolin treated fruits were firmer than control. The slight effect of Jasmine oil on keeping mango fruit firmness in this essential oil was corroborated with research done by Rehman et al (2021) on navel orange as applied methyl jasmonte reduced significantly fruit firmness when compared to control. Concerning fruit freshness represented by L value, The pertinent results showed the effectiveness of Jasmine oil in keeping the look of freshness of mango Eiwess and Hendi fruits, and that was in concordance with the results of (Mirdehghan et al, 2012) when using methyl Jasmonate application on pomegranate, the M.J treated fruits had good freshness look, equal to the peel freshness L values of salicylic acid and potassium sulfate treated fruits (62.0 as an average) (Pastopoulos, 2012) in a study conducted on quince fruit, concluded that kaolin sprays on quince tree (5%) kept high firmness of quince fruits.…”

Section: Discussionsupporting

confidence: 78%

Effect of Some Bio-Stimulants on Fruit Drop and Quality of Mango Fruits

Ibrahim

Elzayat

Shaaban

et al. 2022

Egyptian Journal of Agricultural Research

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Current experiment was carried out on two Egyptian traditional mango varieties, "Eiwess and Hendi" to investigate the effect of some natural plant Biostimulants "Kaolin &Chitosan and Jasmine oil" on fruit drop, Fruit storage ability and quality, when applied to young mango trees (5years old) in the preharvest period. The above-cited Biostimulants were sprayed 3 times on healthy mango trees in an orchard adopting recommended agricultural practices. First application was achieved on fruit set stage, the 2nd application one month later, and the 3rd application after another month, during the years of 2018 and 2019. The mango farm is situated in El Sadat district, Monofeya. Immediately after harvest, a sample of 100 mature intact fruits was taken from each treatment and control. Fruits were transported to fruit handling research laboratory for cold storing (13 ± 1°C and RH 85-90%) and estimating fruit quality. The results indicated that treatments caused a pronounced beneficial effect in lowering fruit drop, counted after 2 months of fruit setting, compared to control trees which recorded a percentage of drop between 80% and 94%, in both seasons and always higher than treatments, while jasmine oil treatment resulted in 66% with Eiwess trees and 58% for Hendi trees in first season, followed by chitosan and kaolin, but in second season fruit drop results were mixed with no consistent pattern. Other fruit quality parameters revealed that all treatments induced generally a slower pace of maturity in cold store compared to control. Fruit weight loss percentage of control was higher always compared to treatments fruits, recording in 1st year a range of 4.7% to 6.8%, for Eiwess mango and 4.4% to 6.8 % for Hendi fruits after 2 weeks in cold store, compared to 8.4%-8.6% for control and increased a little bit after 3 weeks and reached a higher level over 10 % after 4 weeks. Second season fruit weight loss was a little bit higher but jasmine oil treatment gave the least weight loss. Fruit firmness of control declined quickly compared to all treatments that had acceptable values till after 2 weeks in cold store (between 3.7-4.8 lb. /in2 for Eiwess, and a range of 4.7-5.8 lb./in2 for Hendi fruits in both seasons) and after 4 weeks fruits were remarkably softer. Fruit freshness, measured by L* values was nearly similar all over the experiment period. The evolution of yellowness of pulp was nearly the same for all treatments and control and after 3 weeks in cold store, it was a little bit quicker for chitosan with Eiwess fruits, (91 degrees) and kaolin for Hendi fruits (91-96 degrees). Values of TSS % increased gradually for all treatments with higher values for control fruits (as it is expected to be more advanced in ripening) and recording about 22% after 3 weeks in cold storage compared to a range of18.7-21% for treatments for Eiwess fruits in both seasons, while values of TSS% of Hendi were smaller and followed the same trend. Control fruits acidity during cold storage had the lowest values compared to treatment fruits whose ac...

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Section: Discussionsupporting

confidence: 78%

Effect of Some Bio-Stimulants on Fruit Drop and Quality of Mango Fruits

Ibrahim

Elzayat

Shaaban

et al. 2022

Egyptian Journal of Agricultural Research

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“…However, the research on the effects of JA on fruit coloration in citrus fruit is still limited. Rehman et al [60] reported that the preharvest spray application of MeJA induced carotenoid accumulation and accelerated fruit coloration in flavedo of M7 Navel orange. In the study of Yue et al [61], it was found that the postharvest exogenous MeJA treatment promoted the β-citraurin production and fruit coloration in Newhall orange by inducing the expression of the transcription factor MYC2, which substantially activated the expression of the key β-citraurin biosynthetic genes (CCD4b, PSY, LCYB, and HYb).…”

Section: Jasmonatementioning

confidence: 99%

Regulation of Chlorophyll and Carotenoid Metabolism in Citrus Fruit During Maturation and Regreening

Keawmanee

Zhang

et al. 2023

RAS

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Chlorophyll and carotenoid are the main pigments that are responsible for coloration of citrus fruit. The changes in their contents are related to the development stage in citrus fruit. During fruit maturation, carotenoids are massively accumulated in the flavedo and juice sacs, while the chlorophyll contents decreased rapidly. In contrast, the increase of chlorophyll content and decrease of carotenoid contents are observed in the fruit during regreening process. In addition, plant hormones and environmental conditions play important roles in the regulation of color development and the changes of chlorophyll and carotenoid contents in citrus fruit. In this review, we summarized the changes in chlorophyll and carotenoid contents in the flavedo and juice sacs of citrus fruit during fruit maturation and regreening process. Current understanding on the molecular mechanisms that regulated the chlorophyll and carotenoid metabolisms in citrus fruit are discussed. Moreover, the effects of plant hormones and environmental conditions on chlorophyll and carotenoid accumulation are also presented in this review.

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Pre- and Post-harvest Elicitation with Methyl Jasmonate and Salicylic Acid Followed by Cold Storage Synergistically Improves Red Colour Development and Health-Promoting Compounds in Blood Oranges

Vithana,

Singh,

Ul Hasan

2024

J Plant Growth Regul

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Red blush is one of the key quality markers of blood orange fruit (Citrus sinensis L. Osbeck). Therefore, the influence of pre- (1, 2, and 3 mM) and postharvest (0.5, 1, and 1.5 mM) methyl jasmonate (MeJA) and salicylic acid (SA) (1, 2, and 3 mM) treatments on redness, colouring pigments, and health-promoting compounds in cold stored ‘Tarocco Ippolito’ blood oranges was investigated. Preharvest application of 3 mM MeJA significantly increased rind citrus colour index (CCI) by 43.3% and colorimetric coordinate a* (redness) by 3.1% and decreased h° (hue angle, 0 = red), L* (lightness), and b* (yellowness) by 13.7%, 12.6%, and 23.4%, respectively. This treatment also enhanced CCI (57.4%), reduced h° (16.5%) and L* (36.4%), and increased total anthocyanins (88%), monomeric anthocyanins (117%), and flavonoids (77%) in the juice. Postharvest dip of 1.5 mM MeJA (5 min) improved CCI of juice (53.6%) and a* (5.5%), reduced h° (15.9%), L* (19.8%), and b* (19.4%), and increased total anthocyanins (66.7%), monomeric anthocyanins (74%), and flavonoids (23.4%) in the juice. Preharvest application of 1 mM SA increased rind CCI (50.8%) and reduced L* (13.6%), b* (16.4%), and h° (29.5%). All preharvest SA treatments significantly increased total phenolics in the juice. Lycopene was increased (61.7%) by 5 min postharvest dip of 3 mM SA. In conclusion, 3 mM preharvest spray application of MeJA four weeks before harvest and postharvest dip of 1.5 mM MeJA (5 min) are effective in improving red colour of rind and juice and health-promoting compounds in blood orange juice.

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Preharvest spray application of methyl jasmonate promotes fruit colour and regulates quality in M7 Navel orange grown in a Mediterranean climate

Cited by 5 publications

References 0 publications

Effect of Some Bio-Stimulants on Fruit Drop and Quality of Mango Fruits

Effect of Some Bio-Stimulants on Fruit Drop and Quality of Mango Fruits

Regulation of Chlorophyll and Carotenoid Metabolism in Citrus Fruit During Maturation and Regreening

Pre- and Post-harvest Elicitation with Methyl Jasmonate and Salicylic Acid Followed by Cold Storage Synergistically Improves Red Colour Development and Health-Promoting Compounds in Blood Oranges

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