Cut flower of Rosa hybrida L. cv. 'Noblesse' was studied to investigate the physiological change of cut rose flowers of transient water stress and dry cold storage duration. Transient water stress followed by a recovery period, resulted in a decline in the quality of cut flower. After 8 hours without water uptake on the fifth day in the vase, the flower fresh weight and water uptake rate dramaticly declined and cannot fuly blossom. It started to wilting on the sixth day. The rehydration after transient water stress resulted in a higher respiration rate. After 8 hours without water uptake, the ethylene reached its peak to 0.75 nl/g/hr. During the wilting stage, after 4 or 8 hours without water supply, the electrolyte leakage showed significantly differences compared to other treatmens. During the early rehydration stage, the water potential and petal water content increased. However, while the flower was fully bloomed, decreased respectively, which is especially obvious in the treatment which rehydrated both significantly after transient water stress. During cold storage, the increase in the storing temperature resulted in a higher respiration rate. Under 8℃ storage, the ethylene reached its utmost at 0.69 nl/g/hr and the corresponding ACC content and ACO activity are consistent while under 2℃ storage, there were no ACC accumulation and ethylene production.
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机译：切开罗莎杂交种花。以'Noblesse'为研究对象，研究了短暂水分胁迫和干燥冷藏时间对切花月季的生理变化的影响。短暂的水分胁迫随后恢复期，导致切花质量下降。花瓶第五天不吸水8小时后，花的鲜重和吸水率急剧下降，无法开花。第六天开始枯萎。短暂水分胁迫后的补液导致更高的呼吸速率。 8小时不吸水后，乙烯达到其峰值至0.75nl / g / hr。在萎阶段，在没有供水的4或8小时后，与其他处理方法相比，电解液泄漏表现出显着差异。在早期补液阶段，水势和花瓣含水量增加。然而，虽然花朵盛开，但分别下降，这在短暂的水分胁迫后显着补水的处理中尤为明显。在冷藏期间，冷藏温度的升高导致呼吸速率增加。在8℃下储存时，乙烯以0.69 nl / g / hr达到最大，相应的ACC含量和ACO活性一致，而在2℃下储存时，没有ACC积累和乙烯生成。
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