Zusammenfassung
Ziel der Untersuchungen war es, die Auswirkungen verschiedener Temperatur- und Strahlungsbedingungen während der Akklimatisationsphase auf das anschließende Wachstum von Ficus benjamina und Schefflera arboricola im Innenraum zu ermitteln. Beide Pflanzenarten wurden sechs Monate Temperaturen von 15, 20 und 25°C kombiniert mit verschiedenen Photonenstromdichten (PFD; F. benjamina bei 40, 80 und 180 µmol m−2s−1 und S. arboricola bei 10, 20 und 80 µmol m−2s−1) ausgesetzt. Nach der Akklimatisationsphase wuchsen die Pflanzen sechs Monate unter Innenraumbedingungen bei 18 µmol m−2s−1 PFD sowie 20°C bei Belichtung und 18°C bei Dunkelheit. Während der Akklimatisationsphase führte bei F. benjamina die Kombination von 15°C und 180 µmol m−2s−1 PFD zu einer geringen Blattbildung, nicht voll entwickelten Internodien sowie zu aufgehellten Blättern ohne sortentypischen Blattglanz. Das Pflanzenwachstum von F. benjamina und S. arboricola im Innenraum wurde durch die gewählten Akklimatisationsbedingungen positiv beeinflusst. Nach dem Überführen der Pflanzen in den Innenraum traten bei keiner untersuchten Temperatur- und Strahlungsbehandlung Wachstumsdepressionen, Schädlingsbefall oder starker Blattfall auf. Nach sechs Monaten Wachstum im Innenraum hatten sich bei beiden Pflanzenarten die untersuchten Merkmale unabhängig von den Akklimatisationsbedingungen annähernd gleich entwickelt.
Abstract
The present study examined the effects of temperature and light regimes as a means to acclimatize Ficus benjamina and Schefflera arboricola prior to plants being placed in a standard, interior environment. Plants were exposed for six months to temperatures of 15, 20 and 25°C combined with different photon flux densities (PFD; F. benjamina at 40, 80 and 180 µmol m−2s−1 und S. arboricola at 10, 20 und 80 µmol m−2s−1). After treatments, plants were placed in an interior environment at 18 µmol m−2s−1 PFD and 20°C and growth measured. During the acclimatization phase the combination of 15°C and 180 µmol m−2s−1 is critical because leaf number is reduced and leaves were uncharacteristically light green without the typical leaf shine. Temperature and PFD treatments during the acclimatization phase had influenced subsequent growth of F. benjamina and S. arboricola indoors. After six month indoors, growth characteristics were nearly identical among acclimatization treatments.
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Kubatsch, A., Ulrichs, C. Pflanzenakklimatisation an Temperatur- und Lichtbedingungen in Innenräumen. Gesunde Pflanzen 57, 81–89 (2005). https://doi.org/10.1007/s10343-005-0069-8
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DOI: https://doi.org/10.1007/s10343-005-0069-8