Effects of pre-harvest methyl jasmonate treatment on post-harvest fruit quality of Japanese plums

Abstract

Background: Plum fruits constitute a good source of natural antioxidant substances. Particularly, plums contain large amounts of phenolic compounds and flavonoids having natural antioxidant activity which is effective in human diet. The aim of this study was to evaluate the effects of pre-harvest MeJA treatment on the fruit quality and bioactive compounds of three different Japanese plums under storage conditions. Materials and Methods: The effects of pre-harvest methyl jasmonate treatment (MeJA) on weight loss, color characteristics (L*, C* and h°), firmness, soluble solids content (SSC), titratable acidity (TA), total phenolics (TP) and total antioxidant activity (TAA) of 'Black Beauty', 'Black Amber' and 'Fortune' plum fruits during the cold storage (at 0±0.5 C and 90±5% RH) were investigated in this study. Results: MeJA did not have significant effects on the weight loss (%) of 'Black Amber' and 'Fortune' fruits, whereas it was effective in delaying the weight loss of 'Black Beauty' at the end of storage. The color characteristics of all plum cultivars were not significantly affected by MeJA at the end of storage. In all plum cultivars, the SSC increased, while TA significantly (P<0.05) decreased during storage. TP and TAA of 'Black Amber' and 'Fortune' fruits significantly increased during the cold storage. MeJA treatments increased fruit firmness, TP and TAA (according to FRAP) of 'Fortune' plums at the end of storage. Conclusion:The scientific results about the effects of pre-harvest MeJA treatments on the cold storage of Japanese plums may contribute significant helps to improve plum storage durations and quality characteristics.

Improving Coloration, quality and Storability of "Kelsey" Plum Fruits by some Pre-Harvest Applications

“…These results are agreed with those obtained by Kucuker and Ozturk (2014) cold storage. They reported that, methyl jasmonate treatment decreased plum fruit weight loss than the control through the cold storage.…”

Effect of some Biological Stimulants and Kaolin Particles Sprays on Fruit Retention, Productivity and Fruit Quality of Washington Navel Orange Trees

“…The high firmness of SA treatment fruit may be explained by the fact that SA may induce a high acquired resistance in plants, which to a vital factor in limiting the injurious effects of abiotic stresses and inhibiting water loss from fruits. these results are in accordance with those of Ahmad et al (2013) in their work on sweet orange with concentrations of 2, 4, 6, and 8 mm of ascorbic acid and in which the lower concentration 2 mm gave the second highest firmness values of fruit which corroborate the values of fruit firmness related to JO treatment are supported by the similar results obtained by Kucuker and Ozturk (2014) reporting that Jasmonate treated trees of Prunus salicina (plums) resulted in higher yields and increasing fruit firmness.…”

“…Foliar sprays SA on Valencia trees had significantly increased yield, fruit weight, and reducing drop %, owing to salicylic acid effect in enhancing metabolism of plants and biosynthesis during fruit development (Habasy, 2015). Kucuker and Ozturk (2014) cited that preharvest applying methyl Jasmonate on Japanese plums had resulted in higher yield because of its regulatory role in fruit growth and ripening. Foliar application of JO as reported by Iqbal et al (2012) increased fruit weight and this effect is due to enhancing resistance against pests and citrus green and blue molds on tree and that lead to reinvigorating leaves so that photosynthesis will be kept in high rates.…”

Ripening of ‘Kumagai’ guavas and anthracnose control as affected by methyl jasmonate

“…However, contrary effects have been reported; raspberries treated with MJ showed higher SS, total sugar, fructose, glucose, sucrose, malic and citric acid contents than untreated fruit (Wang and Zheng 2005). In plums, Kucuker and Ozturk (2014) reported that the MJ-treated fruit had higher pulp firmness.…”

“…The effects of exogenous MJ on fruit ripening are not clear yet and are dependent on the species, cultivars, and physiological stage of the fruit (Fan et al 1997;Khan and Singh 2007;Ziosi et al 2008;Kucuker and Ozturk 2014).…”