We investigated the effects of supplemental lighting on flowering of two double-flower cultivars of Lysianthus. The experiment was carried out in Scafati (Salerno), Italy (40°45' N, 14°32' E) in air-heated plastic greenhouses. Plants of the white cultivars Echo (for late autumn-winter transplanting) and Cessna (for late spring-summer transplanting) were transplanted on medium sandy soil on January 15 and grown under two lighting regimes, natural light (NL) and supplemental light (SL). Supplemental lighting was performed by extending the natural day length to 18 hours using High Pressure Sodium lamps. Under natural light conditions, the number of days to flowering was 113 in Echo and 130 in Cessna. Supplemental lighting anticipated flowering in both cultivars, with a stronger effect in Echo compared to Cessna (19 vs. 8 days earlier than the control, respectively) and reduced the length of flower stems.
Light requirements for flowering of Lisianthus / Paradiso, Roberta; Fiorenza, Sergio; DE PASCALE, Stefania. - (2008). (Intervento presentato al convegno International Congress of International Society for Horticultural Science (ISHS) "GreenSys 2007 - High Technology for Greenhouse system Management" tenutosi a Naples (Italy) nel October, 4-6 2007).
Light requirements for flowering of Lisianthus
PARADISO, ROBERTA;FIORENZA, SERGIO;DE PASCALE, STEFANIA
2008
Abstract
We investigated the effects of supplemental lighting on flowering of two double-flower cultivars of Lysianthus. The experiment was carried out in Scafati (Salerno), Italy (40°45' N, 14°32' E) in air-heated plastic greenhouses. Plants of the white cultivars Echo (for late autumn-winter transplanting) and Cessna (for late spring-summer transplanting) were transplanted on medium sandy soil on January 15 and grown under two lighting regimes, natural light (NL) and supplemental light (SL). Supplemental lighting was performed by extending the natural day length to 18 hours using High Pressure Sodium lamps. Under natural light conditions, the number of days to flowering was 113 in Echo and 130 in Cessna. Supplemental lighting anticipated flowering in both cultivars, with a stronger effect in Echo compared to Cessna (19 vs. 8 days earlier than the control, respectively) and reduced the length of flower stems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
