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한국식물학회 / v.51, no.5, 2008년, pp.337-340 
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( Ethephon Application Induces Symptoms of Fruit Tissue Degeneration in Watermelon ) |
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| 초 록 |
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| Flesh tissue degeneration (called blood-black heart; BBH) of watermelon (Citrullus vulgaris S.) is occasionally observed in Korea. Fruits with BBH have lower quality, a dark-red flesh, and reduced firmness of the rind, often producing an unpleasant flavor. Although causal factors are thought to be undesirable soil moisture conditions, e.g., drought or water-logging, temperature extremes, or virus infection, the mechanism for this physiological disorder is not clearly understood. It is possible that ethylene gas ($C_2H_4$) is involved in degrading the cell walls. To determine such an implication for ethylene in the occurrence of BBH, we foliar-applied various concentrations of ethephon (100, 200, 400, 800, or $1000;mg;L^{-1}$) to watermelon plants at 5 or 10 d prior to harvesting, then monitored the development of this disorder in their fruits. At $400;mg;L^{-1}$ or higher, quality was diminished and the fruit had softer rind tissues. About 25% of the fruits harvested at that level exhibited BBH versus 100% of the fruits exposed to 800 or $1000;mg;L^{-1}$ ethephon. Concomitant with the onset of BBH, those affected fruits produced elevated amounts of ethylene gas during the 4-d measurement period. Therefore, a high incidence of BBH may well be related to this increased ethylene production, which can be triggered by both unfavorable environmental conditions and inappropriate cultural practices. |
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| 키워드 |
| blood-black heart (BBH) symptoms;cell wall;ethylene evolution;fruit softening;rind thickness;soluble solids; |
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Journal of Plant Biology / v.51, no.5, 2008년, pp.337-340
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200812651530022)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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