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KMID : 0903619800210010036
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Journal of the Korean Society for Horticultural Science
1980 Volume.21 No. 1 p.36 ~ p.41
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Physiological Study on the Coloration of Plum Fruits
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Abstract
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In order to determine the relationship between anthocyanin development, and fruit composition and ethylene evolution in ´Santa Rosa´ plum (Prunes salicina), (2-chloroethyl)phosphonic acid (ethephon) 80 ppm was sprayed on plum trees 3 weeks before commercial maturity.
1. Anthocyanin development was advanced approximately 10 days earlier by ethephon treatment as compared with control fruits.
2. Anthocyanin development was enhanced rapidly with increase in total sugar content of ethephon-treated and control fruits.
3. Total phenol content in ethephon-treated fruits was rapidly increased at full coloration stage.
4. Leucoanthocyanin content in ethephon-treated fruit increased rapidly, but there was not significantly changed in control fruits.
5. Ethylene evolution in ethephon-treated fruits began 3 days after ethephon application and thereafter anthocyanin development was initiated. But ethylene evolution in non-treated fruits was detected after beginning of anthocyanin development.
6. Post-harvest treatment of ethephon also stimulated anthocyanin development but the other fruit composition was not affected.
7. The results suggest that there was a good relationship between anthocyanin development, and the content of sugar, phenol and leucoanthocyanin in fruits. On the other hand ethylene significantly promoted the anthocyanin accumulation but it seems not to be a trigger to develop anthocyanin in plum fruits.
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