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Differences in ripening behaviour in some melon cultivars.

Yoshida, Y.; Ohi, M.; Fujimoto, K.;

Journal of the Japanese Society for Horticultural Science Year: 1990 Vol: 58 Issue: 4 Pages: 999-1006 Ref: 15 ref.

1990

บทคัดย่อ

Differences in ripening behaviour in some melon cultivars.

Fruits of 4 cultivars were harvested at different ages. Fruits of Cucumis melo var. reticulata (cultivars Earl's Favourite and IW-57) showed a climacteric rise in respiration, and IW-57 showed a particularly high rate of CO2 and ethylene evolution. Cv. Ginsen (var. acidulus) and IW-57, which have poor storage quality, showed higher respiration rates than Honey Dew (var. inodorus) and Earl's Favourite. Postharvest treatment with 1000 p.p.m. ethylene for 20 h reduced flesh firmness, but the effects were slight in Ginsen, and in Earl's Favourite and IW-57 at the climacteric phase. In Honey Dew, soluble solids contents (SSC) were high at the early stages of development and did not increase much in the period 40-55 days after anthesis; sucrose content was low at harvest, even at the commercial harvest dates, but it increased after harvest, especially with ethylene treatment. In the other cultivars, SSC and sucrose content increased rapidly just before the commercial harvesting stages. Fruit quality of Earl's Favourite decreased with the decrease of SSC and total sugar contents (TSC) after harvest. In Honey Dew, there was normally a low correlation between SSC and TSC just after harvest, but fruits treated with ethylene showed a high correlation. In the other cultivars, the correlation was high. SSC was always higher than TSC.