Performance and quality of <Emphasis Type="Italic">Cupressus sempervirens</Emphasis> L. mini-plug seedlings under reduced photoperiod |
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Authors: | Panagiota Kostopoulou Kalliopi Radoglou Olympia Dini-Papanastasi |
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Institution: | (1) Forest Research Institute, NAGREF, 57006 Vassilika, Thessaloniki, Greece; |
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Abstract: | Short-day treatment has been used for some conifer species to improve planting stock quality. The aim of this paper was to
study the effect of short-day treatment on performance and quality of young seedlings of Italian cypress (Cupressus sempervirens L.), a conifer species abundant in the Mediterranean area. Seeds of Italian cypress were sown in mini-plug cavities. After
5 weeks of growth, seedlings were subjected to four different photoperiods: (a) 14 h (control), (b) 8 h, (c) 6 h, and (d)
4 h for a period of 1–3 weeks, before they were transplanted to bigger size containers. Reducing photoperiod did not result
in bud formation or shoot inhibition although it increased the number of lateral shoots. Seedlings subjected to 6-h photoperiod
for 2 weeks during pre-cultivation in mini-plugs had improved root characteristics, giving them a higher potential for outplanting
success, especially in Mediterranean areas. |
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Keywords: | |
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