Can a high red: Far red ratio replace temperature-induced inflorescence development in Phalaenopsis?

Dueck, T.A.; Trouwborst, G.; Hogewoning, Sander W.; Meinen, E.

doi:10.1016/j.envexpbot.2015.05.011

Cited by 17 publications

(25 citation statements)

References 25 publications

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“…In this system, growth conditions (e.g., lighting, temperature, and humidity) can be controlled relatively easily [42]. Recent advances in light-emitting diode technology (LED lighting) allow the spectral composition of light to be tailored to the needs of the plants [43]. This facilitates the use of red-enriched light (light with a high R:FR ratio) as a means to increase crop resistance against herbivores and pathogens in horticultural crops.…”

Section: Root Growth and Soil Resource Uptakementioning

confidence: 99%

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Anten

Vermeulen

2016

Trends in Ecology & Evolution

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Section: Root Growth and Soil Resource Uptakementioning

confidence: 99%

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Anten

Vermeulen

2016

Trends in Ecology & Evolution

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“…Recently, Dueck et al [35] published that a high red:far red ratio via supplemental high pressure sodium resulting in a high PSS value can enhance flower bud break of two Phalaenopsis cultivars, Quincy and Red Stones, compared to the supplement of a combination of high pressure sodium and far-red LEDs with a low PSS value. In this study, likewise, a 10% increase in red supplement significantly elevated the ratio of red to far-red light and the level of PSS (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Enhancing Flower Stalk Emergence in <i>Phalaenopsis</i> by Red Light Supplementation

Lu¹,

Liu²,

Hsu³

et al. 2016

AJPS

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A key step in regulating the flowering of Phalaenopsis is to control the emergence of the flower stalk or spiking. Light quality is an important factor to regulate plant reproduction. We used either red or blue light emitting diodes (LEDs) to substitute for 10% photosynthetic photon flux emitted by white fluorescent tubes as the control (WC) at approximately 70 μmole•m −2 •s −1 to examine the effects of enhanced red (WR) or blue (WB) light on spiking and the dawn-to-dusk fluctuations in the photosynthetic pigments and carbohydrates of Phalaenopsis aphrodite, which were grown in 7.5 cm diameter pots for six weeks. WR treatment significantly elevated the ratio of red to far-red light and the level of phytochrome photostationary state in concurrence with an increase in the spiking ratio and length, but had little effect on the concentrations of chlorophyll a and chlorophyll b in the leaf, levels of soluble sugars such as glucose, fructose, sucrose, and insoluble starch in the leaf and shortened stem, the locus of spiking, when compared to the other two treatments. Evidently, the spiking of Phalaenopsis is improved by dependent on the relative amount of active phytochrome expressed in the photostationary state.

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“…Based on our results, supplemental irradiation is recommended at this time of year for better quality potted plants, as the irradiated lachenalias had shorter and thicker inflorescence stems with more individual florets in the inflorescence. Dueck et al (2016) reported that light treatment (HPS lamps) with a relatively high red-tofar-red ratio and, hence, high phytochrome photostationary state value in Phalaenopsis, abolished (by modulating auxin transport via phytochrome B) apical dominance of the primary flowering inflorescence, allowing for more inflorescences to develop. Similar mechanisms might have occurred in irradiated lachenalia plants that developed more florets on inflorescence stems.…”

Section: Morphological Parameters and Flowering Timementioning

confidence: 99%

The morphological and physiological response of Lachenalia to supplemental irradiation

Kapczyńska

Stodolak

2019

Hortic. Environ. Biotechnol.

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The aim of this study was to examine the effects of supplemental irradiation, provided by high-pressure sodium lamps during cultivation, on growth, flowering, and physiological responses of six Lachenalia cultivars: 'Rainbow Bells', 'Aqua Lady', 'Josephine', 'Riana', 'Radient', and 'Cherise'. Depending on light conditions and cultivar, lachenalia bulbs flowered from February 20th to March 24th. Additional irradiation accelerated flowering of 'Rainbow Bells', 'Aqua Lady', 'Josephine', and 'Riana' plants by 5-19 days depending on the cultivar. Compared with controls, the irradiated bulbs had a higher floral ratio and produced shorter inflorescence stems and inflorescences, a larger number of single florets, and thicker inflorescence stems (except for 'Rainbow Bells'). The use of lamps resulted in shorter leaves with a higher chlorophyll a content in 'Aqua Lady', 'Riana', 'Radient', and 'Cherise' compared to control plants. The shortest leaves were reported in the 'Josephine' cultivar, and they were on average two times shorter than in the other cultivars. Bulbs and leaves of all cultivars grown under supplemental irradiation were characterized by higher dry weight than control plants. Dry weight content was highest in the bulbs and in the roots, and it was lowest in lachenalia leaves and shoots. Thus, supplemental irradiation from high-pressure sodium lamps positively affected morphological and physiological plant quality, although differences in the evaluated features largely depended on cultivar.

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Can a high red: Far red ratio replace temperature-induced inflorescence development in Phalaenopsis?

Cited by 17 publications

References 25 publications

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Enhancing Flower Stalk Emergence in <i>Phalaenopsis</i> by Red Light Supplementation

The morphological and physiological response of Lachenalia to supplemental irradiation

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Can a high red: Far red ratio replace temperature-induced inflorescence development in Phalaenopsis?

Cited by 17 publications

References 25 publications

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Tragedies and Crops: Understanding Natural Selection To Improve Cropping Systems

Enhancing Flower Stalk Emergence in &lt;i&gt;Phalaenopsis&lt;/i&gt; by Red Light Supplementation

The morphological and physiological response of Lachenalia to supplemental irradiation

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Enhancing Flower Stalk Emergence in <i>Phalaenopsis</i> by Red Light Supplementation