บทคัดย่องานวิจัย

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Ten years of optimum harvest date data for the variety 'Cox's Orange Pippin'.

Luton, M. T.;

COST 94. The postharvest treatment of fruit and vegetables. Determination and prediction of optimum harvest date of apples and pears. Proceedings of a meeting, Lofthus, Norway, 9-10 June 1994. Year: 1996 Pages: 39-48 Ref: 10 ref.

1996

บทคัดย่อ

Ten years of optimum harvest date data for the variety 'Cox's Orange Pippin'.

Maturity measurements were made on fruits of the apple cv. Cox's Orange Pippin clone Queen Cox on MM.106 in 6 orchards of 5- to 10-year-old trees between 1983 and 1993. Fruits were samples twice weekly from mid-Aug. until harvest and fruit weight, internal ethylene concentration, firmness and starch content were measured. The seasonal average of either internal ethylene concentration or 70% starch correlated well with the estimated predicted harvest date. Although there was generally good agreement between ethylene, starch and fruit firmness, no single parameter measured provided a reliable guide to optimum harvest date. It appeared from the data that the optimum harvest date of Queen Cox could only be predicted 7 days before that date, using a combination of these parameters. The predicted harvesting date using the formulae of Luton and Hamer [see Journal of Horticultural Science (1983) 58, 37-44] provided a good guide in 8 of the 11 seasons.