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|標題:||Effects of Water Stress and Cold Storage on the Physiological Metabolism of Cut Roses
|關鍵字:||低溫貯藏;Ethylene;呼吸率;水分逆境;乙烯;玫瑰切花;Respiration;Cold storage;Water Stress;cut rose;ACO;ACC||Project:||Horticulture NCHU, Volume 29, Issue 2, Page(s) 67-84.
興大園藝, Volume 29, Issue 2, Page(s) 67-84.
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.
|Appears in Collections:||第29卷 第02期|
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