Preharvest salicylic acid treatments to improve quality and postharvest life of table grapes (Vitis vinifera L.) cv. Flame Seedless

Significance of preharvest salicylic acid (SA) treatments on maturity, quality and postharvest life of grape cv . Flame Seedless were studied during two years. The experiment was performed on 12-year old own rooted, grapevines planted at 3 m × 3 m spacing trained on overhead system. Vines were treat...

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Bibliographic Details
Published in:Journal of food science and technology 2015-06, Vol.52 (6), p.3607-3616
Main Authors: Champa, W. A. Harindra, Gill, M. I. S., Mahajan, B. V. C., Arora, N. K.
Format: Article
Language:English
Subjects:
Acids
Analysis
Aqueous solutions
Berries
Chemical compounds
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cold storage
Food preservation
Food quality
Food Science
Fruits
Horticulture
Nutrition
Original
Original Article
Physical properties
Plant growth
Polyethylene
R&D
Research & development
Seasons
Studies
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Summary:Significance of preharvest salicylic acid (SA) treatments on maturity, quality and postharvest life of grape cv . Flame Seedless were studied during two years. The experiment was performed on 12-year old own rooted, grapevines planted at 3 m × 3 m spacing trained on overhead system. Vines were treated with aqueous solutions of SA (0.0, 1.0, 1.5 and 2.0 mM) at pea stage and at veraison. After harvesting, clusters were divided into two lots in which one was subjected to initial quality evaluation, while the other was stored in cold room (3–4 °C, 90-95 % RH) for evaluation of postharvest quality. SA at the dose of 1.5 and 2.0 mM hastened berry maturity by 3 to 5 days, produced less compact bunches alongside larger berries in contrast to control and the lowest dose. The same doses effectively maintained peel colour, higher firmness, lower pectin methyl esterase activity and electrolyte leakage alongside suppressing degradation of TSS and TA during cold storage. These two doses also exhibited higher efficacy on maintaining anthocyanins, phenols and organoleptic properties while reducing weight loss, rachis browning and decay incidence. Correlation analysis demonstrated that many quality parameters are interdependent. In conclusion, preharvest spray of 1.5 mM SA proved to be an effective means of improving quality and extending postharvest life of grape cv . Flame Seedless.
ISSN:0022-1155
0975-8402
DOI:10.1007/s13197-014-1422-7