Claim · model-written summary
Increasing photon flux density or lighting frequency reduced time to flowering in all three species.
- Taxon
- pot roses ( Rosa sp. cv. Golden Hit), Kalanchoe blossfeldiana cv. Debbie and Begonia × hiemalis cv. Barkos
Rosa sp._Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=60)
Kalanchoe blossfeldiana
Begonia ×hiemalise0 - Treatment
- Increasing the PFD from the lowest to the highest level or increasing the lighting frequency from every fourth day to every daye1
- Outcome
- time until floweringe1
- Direction
- reducede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Kalanchoe_blossfeldiana_-_inflorescence.jpg?width=500)
Verbatim
e0“pot roses ( Rosa sp. cv. Golden Hit), Kalanchoe blossfeldiana cv. Debbie and Begonia × hiemalis cv. Barkos”
e1“Increasing the PFD from the lowest to the highest level or increasing the lighting frequency from every fourth day to every day gradually reduced the time until flowering in all 3 species.”
Title
Growth and light utilization of pot plants at variable day-to-day irradiances
L. M. Mortensen European Journal of Horticultural Science 2004. doi:10.1079/ejhs.2004/20708
Other claims from this paper (5)
- Intervention effect Increasing PFD from 50 to 150 increased plant dry weight and mean daily growth rate.
- Intervention effect Further PFD increase to 200 had no effect on plant dry weight and growth rate.
- Intervention effect Decreasing PFD or lighting frequency increased mean light utilization.
- Observation Low PAR for one to three days could not be compensated by high PAR on other days.
- Recommendation Sufficient PAR should be applied daily for good plant growth.