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KMID : 0903619960370050671
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Journal of the Korean Society for Horticultural Science
1996 Volume.37 No. 5 p.671 ~ p.674
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Effect of Ethephon Treatment on Cell Wall Release and Softening in rin-Tomato Fruits During Postharvest Ripening
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Abstract
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At stage III after harvest, the hardness of ethephon-treated rin tomato fruit decreased greatly, but the mutant did not soften as much as normal fruit. The attached rin tomato fruits hardly lost their hardness at harvest. The ethephon-treated rin tomato fruits produced larger amounts of water-soluble pectin than the nontreated and vine-attached ones, whereas the vine-attached rin tomato fruit showed the lowest level of water-soluble pectin. In EDTA-soluble pectin level there was little difference between normal and rin tomatoes, but the latter had the higher amounts of pectinase-soluble pectin than the former. The ethephon-treated rin tomato fruit also resulted in the most vigorous release of CWB Ca^(++), Mg^(++) and K^+. These results mean that ethylene contribute directly or indirectly to cell wall degradation and softening in tomato pericarp tissue, which are affected by the composition and structure of cell wall.
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KEYWORD
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