บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Pre-harvest application of some ethylene inhibitors delays "Crimson" seedless grape ripening and improves storability.

Abdel-Hamid, N.;

Annals of Agricultural Science (Cairo) Year: 2000 Vol: 45 Issue: 1 Pages: 295-314 Ref: 23 ref.

2000

บทคัดย่อ

Pre-harvest application of some ethylene inhibitors delays "Crimson" seedless grape ripening and improves storability.

The effects of amino-oxyacetic acid (AOA) and amino-isobutyric acid (AIBA) as inhibitors of ethylene biosynthesis, and Ca2+ as an inhibitor of ethylene activity, on delaying ripening and increasing storability of "Crimson" seedless grapes were studied during 1997 and 1998. The clusters were sprayed at 6-7 mm berry diameter. Treatment delayed ripening by about 8-25 days depending on treatment. However, the different treatments increased total yield, cluster weight and compactness, berry adherence strength and firmness. Also, AOA, AIBA and Ca2+ treatments reduced berry shuttering and ethylene production. Soluble vs. insoluble pectic substances as well as pectin methyl esterase and polyphenol oxidase enzyme activities and relative activity were also reduced. There were only slight treatment effects on shot berries %, TSS %, titratable acidity and TSS/acids ratio. Treatments decreased the percentage of decay, weight loss and berry shuttering during storage, but had little effect on shelf-life, TSS%

and titratable acidity during cold storage. Ethylene production was less in the treated clusters than controls during cold storage periods. It is concluded that treating clusters of 'Crimson" seedless grapes at 6-7 mm diameter with some ethylene inhibitors delayed ripening and improved yield quantity and quality.