Artificial light from light emitting diodes (LEDs) with a high portion of blue light results in shorter poinsettias compared to high pressure sodium (HPS) lamps

Islam, M. A.; Kuwar, Goutam; Clarke, Jihong Liu; Blystad, Dag‐Ragnar; Gislerød, Hans R.; Olsen, Jorunn E.; Torre, Sissel

doi:10.1016/j.scienta.2012.08.034

Cited by 101 publications

(68 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is noteworthy that the RGR and NAR were negatively correlated with the morphological indices (SLA, LAI). The lowest values of these indices were observed in the combination with the highest share of blue light, which strongly inhibits the growth of many plant species [21,40].…”

Section: Discussionmentioning

confidence: 98%

“…According to Averchev et al [19], for the growth of plants the appropriate ratio between red and blue light is 7:1, where the PPFD is 350-400 μmol m -2 s combination, which strongly reduces the growth of shoots in some plants [20,21]. It is noteworthy that especially in the initial period of growth the smallest length of hypocotyl was observed in combinations B (60/20) and C (50/30).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of radiation of LED modules on the growth of dill (Anethum graveolens L.)

Frąszczak¹,

Gąsecka

Golcz

et al. 2016

Open Life Sciences

View full text Add to dashboard Cite

Light quality is thought to affect the growth and development of plants. We examined how light influences the growth and content of some chemical compounds in dill (Anethum graveolens L.). The plants were grown under different light quality. The share of orange and green light in the spectrum was constant and amounted to 10% for either colour. In the first combination (A, 70/10), there was 70% of red light and 10% of blue light. Other combinations had the following proportions: B 60/20, C 50/30, D 40/40 and E 30/50 of red and blue light. The PPFD was about 155 μmol m-2 s-1. Blue light inhibited the elongation growth as well as leaf area. It had positive influence on the accumulation of dry mass, glucose and fructose in the herb. In the combinations with higher percentage of red light the plants were characterised by higher content of essential oils, macronutrients and zinc. To sum up, we can say that the proportion of red and blue light has significant influence on the morphological qualities, chemical composition and dynamics of photosynthesis in these plants. On the other hand, the selection of spectral composition of LEDs will depend on the result we want to achieve.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

The effect of radiation of LED modules on the growth of dill (Anethum graveolens L.)

Frąszczak¹,

Gąsecka

Golcz

et al. 2016

Open Life Sciences

View full text Add to dashboard Cite

show abstract

“…Genetic modification of Kalanchoë to reduce internode length was suggested by Lütken et al (2010) and by Teixeira da Silva (2004) to alter the morphogenesis in Chrysanthemum. Islam et al (2013) inserted a "short internode gene" from Arabidopsis into Poinsettia using Agrobacterium, which resulted in a reduction in shoot length by up to 50%. Genetic modification using biotechnology seems to have great potential; however, the resistance from consumers and authorities against GMO crops is a problem, especially in Europe, even if it may be a little less difficult to gain acceptance for using this technology in non-edible crops (Bhattacharya et al 2010).…”

Section: Genetic Materials and Plant Managementmentioning

confidence: 99%

“…Currey and Lopez (2013) stated that enriching the natural light with narrow-band light would not affect plant growth much. However, Islam et al (2012) ) in combination with natural sunlight.…”

Section: Light Managementmentioning

confidence: 99%

Methods for growth regulation of greenhouse produced ornamental pot- and bedding plants – a current review

Bergstrand

2017

Folia Horticulturae

View full text Add to dashboard Cite

Chemical plant growth regulators (PGRs) are used in the production of ornamental potted and bedding plants. Growth control is needed for maximizing production per unit area, reducing transportation costs and to obtain a desired visual quality. However, the use of PGRs is associated with toxicity risks to humans and the environment. In many countries the availability of PGRs is restricted as few substances are registered for use. A number of alternative methods have been suggested. The methods include genetic methods (breeding) and crop cultivation practices such as fertigation, temperature and light management. A lot of research into “alternative” growth regulation was performed during the 1980-1990s, revealing several possible ways of using different climatic factors to optimize plant growth with respect to plant height. In recent years, the interest in climatic growth regulation has been resurrected, not least due to the coming phase-out of the plant growth regulator chlormequat chloride (CCC). Today, authorities in many countries are aiming towards reducing the use of agrochemicals. At the same time, there is a strong demand from consumers for products produced without chemicals. This article provides a broad overview of available methods for non-chemical growth control. It is concluded that a combination of plant breeding and management of temperature, fertigation and light management has the potential of replacing chemical growth regulators in the commercial production of ornamental pot- and bedding plants.

show abstract

“…For example, Islam et al (Islam et al, 2012;2013;2014) recently worked on controlling poinsettia shoot elongation investigating light quality, hormonal physiology, genetic engineering and postharvest quality. However, there is no recent review on the postharvest quality of poinsettia.…”

Section: Introductionmentioning

confidence: 99%

Postharvest behavior and keeping quality of potted poinsettia: a review

Islam

Joyce

2015

Res. Agric. Livest. Fish.

View full text Add to dashboard Cite

Poinsettia is one of the most important potted plants in the ornamentals industry. The most attractive parts of the poinsettia are its bracts and cyathia. Stem breakage, bract fading, bract edge burn (BEB), bract bruising and bract discoloration reduce its ornamental value. The ornamental value of poinsettia is affected by both pre-and postharvest factors. During cultivation as well as after harvest, sub-optimal or improper supply and / or management of temperature, light, relative humidity, nutrition and hygiene affect the quality of potted poinsettia. A low K : Ca ratio can reduce the incidence of bract necrosis and stem breakage. These disorders are negatively affected by high K and NH4-N fertilizer due to an antagonistic relationship with Ca. Spraying either CaCl2 or Ca(NO3)2 (400mg/l of Ca per week) or a silicon spray (7.12 mM Na2SiO3) and increasing the transpiration rate by reducing the relative humidity can reduce the incidence and severity of bract necrosis. Appropriate variety selection can lessen the risks of leaf drop and BEB. Propagating with thick stemmed cuttings (> 7.5 mm diameter) and carefully watering of plants can also help to prevent stem breakage. The optimum temperature range to achieve expected bract color, size and bud formation during the growth period is 16 to 22 Islam and JoycePostharvest behavior and keeping quality of potted poinsettia Res.

show abstract

Artificial light from light emitting diodes (LEDs) with a high portion of blue light results in shorter poinsettias compared to high pressure sodium (HPS) lamps

Cited by 101 publications

References 37 publications

The effect of radiation of LED modules on the growth of dill (Anethum graveolens L.)

The effect of radiation of LED modules on the growth of dill (Anethum graveolens L.)

Methods for growth regulation of greenhouse produced ornamental pot- and bedding plants – a current review

Postharvest behavior and keeping quality of potted poinsettia: a review

Contact Info

Product

Resources

About