Acta Horticulturae

Modified atmosphere (MA) packaging of mini-gladiolus (Gladiolus hybr. cv. 'Adi') cut spikes, together with sucrose plus STS pulsing, offers potential advantages of extending their vase life and maintaining flower quality. Sealing groups of 25 spikes in individual PE liners, in which a MA composed of 4–7% CO2 and 10–14% O2 was created, improved significantly florets' opening and longevity following dry storage of 14 days at 2°C, and retarded bract and leaf yellowing. Pulsing the spikes with sucrose (10%) and STS (0.4 mM) prior to their MA packaging, further improved flower quality and opening. Sucrose pulsing without storage resulted in elevated levels of glucose and fructose, and in maintenance of high starch levels in the third floret during flower opening. Addition of STS to the pulsing solution doubled the levels of glucose and fructose in this floret, suggesting that STS may improve sucrose uptake and its subsequent hydrolysis. The results suggest that pulsing of mini-gladiolus spikes with sucrose may maintain high levels of carbohydrates, necessary for floret expansion, by both increasing contents of the predominant soluble sugars and preventing starch depletion. MA packaging may reduce floret metabolism during storage, thereby slowing carbohydrate consumption as respiratory substrate. Consequently, the combined treatment extended flower longevity and improved floret opening. In addition, MA packaging retarded leaf and bract senescence, presumably due to the high CO2 levels accumulated within the package. Hence, these vegetative parts may serve as a possible source for assimilate import to the floret sink, that is necessary for maintenance of appropriate floret opening after storage.

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הספר "אוצר וולקני"
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תנאי שימוש
IMPROVEMENT OF THE KEEPING QUALITY OF MINI-GLADIOLUS SPIKES DURING PROLONGED STORAGE BY SUCROSE PULSING AND MODIFIED ATMOSPHERE PACKAGING
IMPROVEMENT OF THE KEEPING QUALITY OF MINI-GLADIOLUS SPIKES DURING PROLONGED STORAGE BY SUCROSE PULSING AND MODIFIED ATMOSPHERE PACKAGING

Modified atmosphere (MA) packaging of mini-gladiolus (Gladiolus hybr. cv. 'Adi') cut spikes, together with sucrose plus STS pulsing, offers potential advantages of extending their vase life and maintaining flower quality. Sealing groups of 25 spikes in individual PE liners, in which a MA composed of 4–7% CO2 and 10–14% O2 was created, improved significantly florets' opening and longevity following dry storage of 14 days at 2°C, and retarded bract and leaf yellowing. Pulsing the spikes with sucrose (10%) and STS (0.4 mM) prior to their MA packaging, further improved flower quality and opening. Sucrose pulsing without storage resulted in elevated levels of glucose and fructose, and in maintenance of high starch levels in the third floret during flower opening. Addition of STS to the pulsing solution doubled the levels of glucose and fructose in this floret, suggesting that STS may improve sucrose uptake and its subsequent hydrolysis. The results suggest that pulsing of mini-gladiolus spikes with sucrose may maintain high levels of carbohydrates, necessary for floret expansion, by both increasing contents of the predominant soluble sugars and preventing starch depletion. MA packaging may reduce floret metabolism during storage, thereby slowing carbohydrate consumption as respiratory substrate. Consequently, the combined treatment extended flower longevity and improved floret opening. In addition, MA packaging retarded leaf and bract senescence, presumably due to the high CO2 levels accumulated within the package. Hence, these vegetative parts may serve as a possible source for assimilate import to the floret sink, that is necessary for maintenance of appropriate floret opening after storage.

Scientific Publication