1991
DOI: 10.21273/hortsci.26.2.120
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Daylength, Cold Storage, and Plant-production Method Influence Growth and Flowering of Asclepias tuberosa

Abstract: Greenhouse- and field-produced plants of Asclepias tuberosa L., butterfly flower, were forced in the greenhouse under various daylengths to produce flowering plants for the florist industry. Examined were post-production cold storage temperature (4.5 and 10C) and period (12, 14, and 16 weeks), forcing daylength (9, 13, 15, or 17 hours), plant-production scheme (greenhouse- vs. field-produced), and planting depth (exposed crowns or crowns planted 1.3 cm below the medium surfac… Show more

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Cited by 7 publications
(3 citation statements)
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“…Plastics, Minneapolis, MN) containing 100% perlite (Carolina Perlite Co. Inc., Gold Hill, NC) to a depth of 5.2 cm, with a topdressing of vermiculite (TX401; BWI, Greer, SC) of 0.635 cm depth. Supplemental light was provided by light-emitting diode arrays (Fluence Spyder with PhysioSpec; Fluence Technologies Inc., Austin, TX), providing a photosynthetic photon flux density of 250 mmol•m À2 •s À1 at the substrate surface and 14-h daylength (Albrecht and Lehmann 1991). After planting, seed trays were placed on a mist bench with a misting cycle applying municipal water (pH 6.2, alkalinity of 11 ppm) set at 6 s every 10 min.…”
Section: Methodsmentioning
confidence: 99%
“…Plastics, Minneapolis, MN) containing 100% perlite (Carolina Perlite Co. Inc., Gold Hill, NC) to a depth of 5.2 cm, with a topdressing of vermiculite (TX401; BWI, Greer, SC) of 0.635 cm depth. Supplemental light was provided by light-emitting diode arrays (Fluence Spyder with PhysioSpec; Fluence Technologies Inc., Austin, TX), providing a photosynthetic photon flux density of 250 mmol•m À2 •s À1 at the substrate surface and 14-h daylength (Albrecht and Lehmann 1991). After planting, seed trays were placed on a mist bench with a misting cycle applying municipal water (pH 6.2, alkalinity of 11 ppm) set at 6 s every 10 min.…”
Section: Methodsmentioning
confidence: 99%
“…2200-0200 h) or continuous light is provided by incandescent lamps during the entire night (Moe et al, 1991;Runkle et al, 1998). If the periods of NB lighting are shorter than 4 h, flowering may become non-uniform and delayed in some species (Runkle et al, 1998), and if the periods are longer than 4 h, the number of flowers may not increase further (Albrecht and Lehmann, 1991;Hamaker et al, 1996). Cyclic lighting, in which lamps are turned on and off during the 4 h of NB lighting in the middle of the night provide advantages in the form of energy savings, but flowering in some LD species may be incomplete, delayed or non-uniform compared to plants grown under continuous incandescent light (Bickford and Dunn, 1972;Blanchard and Runkle, 2010).…”
Section: Introductionmentioning
confidence: 99%
“…During the second year of growth, flower production is initiated, and plants will produce flowers perennially from that point forward (Shannon and Wyatt, 1986). Published accounts indicate that all Asclepias species are facultative long-day plants that can be forced to flower by exposing plants to 15-h days, night interruption of 5 min every hour, and 25 C day/14 C night temperatures (Albrecht and Lehmann, 1991).…”
mentioning
confidence: 99%