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    Effects of different storage methods and periods on vase life of cut narcissus (Narcissus tazetta L. ‘Karaburun’)
    (International Society for Horticultural Science, 2019) Zeybekoğlu, E.; Salman, A.; Alp, Ş.; Özzambak, M.E.
    Improving storage performance of cut flowers is particularly useful for flowers that are short-lived, and whose display period in the field is brief. Here we report on factors affecting postharvest performance of Narcissus tazetta L. ‘Karaburun’, which is a field-grown narcissus in Turkey. A factorial experiment was performed, in which the cut narcissi were held dry in modified atmosphere packaging (MAP) or wrapped paper at 0±0.5°C for 1, 2, 3, 4, 5 or 6 weeks, and were pulsed with 0.25 mM silver thiosulfate (STS) or distilled water (control) either before or after storage. Vase life of 7 days was reduced with increasing storage duration. The degree of the decrease in vase life depended on the type of storage treatment imposed. At 5 weeks of storage, wrapped paper was as good as MAP for maintaining vase life (4.7-5.6 days), when a pre-storage pulsing treatment was applied. However, at 6 weeks of storage, the MAP-stored flowers had a better vase life (5.3 days) than those stored in paper (4 days). The vase life of the 6-week paper-stored flowers was even less (2.1 days), when the pulsing treatment was applied after storage. By contrast, at 6 weeks of storage, the vase life of the MAP-stored flowers was the same (4.9-5 days), regardless of the time of application of the pulsing treatment pre- or post-storage. In conclusion, the best treatment for N. tazetta L. ‘Karaburun’ was MAP storage, combined with STS pulsing, applied either pre- or post-storage. © 2019 International Society for Horticultural Science. All rights reserved.
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    The effects of pre-planting bulb storage temperatures on flower development of pot-grown narcissus
    (International Society for Horticultural Science, 2019) Oö Zzambak, M.E.; Zeybekoglu, E.; Alp, Ş.; Salman, A.
    While cut narcissus is a popular ornamental crop in Turkey, there is almost no production of pot-grown narcissus. In this study the aim was to determine suitable cultivars for pot cultivation and investigate the effects of pre-cooling treatments on growth and flowering. Bulbs (grade 13-14cm circumference) of eight cultivars were grown in pots. Before planting, three pre-planting bulb storage treatments were applied: 1) 17-20°C for 9 weeks followed by 9°C for 6 weeks; 2) ambient (fluctuating) temperatures for 9 weeks followed by 9°C for 6 weeks; 3) ambient (fluctuating) temperatures for 15 weeks (control). The treated plants were then grown under greenhouse conditions. Flower stem length, flower length, leaf length, first flowering time and flowering period were affected by the treatments. Treatment 1 gave the most favourable results: flowering was 7,6 days earlier than in the control and quality was better. Five cultivars – ‘Dutch Master’, ‘Strong Gold’, ‘Ice Follies’, ‘Golden Harvest’ and ‘Professor Einstein’ – were determined as suitable cultivars for pot plant production. © 2019 International Society for Horticultural Science. All rights reserved.
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    Performance of different narcissus cultivars in Izmir ecological conditions
    (International Society for Horticultural Science, 2019) Salman, A.; Zeybekoğlu, E.; Alp, Ş.; Özzambak, M.E.; Wallace, M.Y.
    Commercial narcissus production in Turkey is mostly carried out in Izmir, Mersin, Adana and Samsun provinces and predominantly favours the multi-headed tazetta cultivars. On the other hand, the Netherlands and Great Britain, as the leading narcissus producing countries, especially breed and export a wide range of trumpet, large-cut, small-cup and double cultivars which demonstrate full adaptation to colder climates. In this research, realised in an open field belonging to Ege University’s Bayindir Vocational Training School, cool climate narcissus cultivars were examined in terms of their floral quality in Mediterranean ecological conditions. For this purpose, 22 different Narcissus cultivars were scrutinized through a set of visual criteria for their sprouting and flowering time, flowering duration, stem height and width together with the amount and diameter of their flowers. The cultivars demonstrated rather different outcomes. Thus their 20% sprouting times were between 16 and 37 days from planting (with ‘Precocious’ and ‘Cheerfulness’ being the extremes); the 20% flowering times were within 70 and 94 days from planting (‘Tête-à-Tête’ and ‘Strong Gold’ being the earliest and ‘Precocious’ the latest) and flowering duration was between 16 and 38 days (‘Actaea’ and ‘Salome’). In addition, stem lengths varied between 19.6 cm (‘Tête-à-Tête’) and 48.5 cm (‘Golden Harvest’) and stem diameters were between 0.55 cm (‘Tête-à-Tête’) and 1.48 cm (‘Carlton’). The largest flower diameter occurred on ‘Sempre Avanti’ (12.1 cm) and the highest number of flowers per stem were found on ‘Tête-à-Tête’ and ‘Cheerfulness’. Therefore, this research showed that most cool climate narcissus cultivars can adapt successfully to Mediterranean ecological conditions suggesting that the cultivars used in landscape projects and the floriculture industries in Turkey could be extended. © 2019 International Society for Horticultural Science. All rights reserved.