Spectral dependence of photosynthesis and light absorptance in single leaves and canopy in rose

Paradiso, Roberta; Meinen, E.; Snel, J.; Visser, Pieter de; Ieperen, W. van; Hogewoning, Sander W.; Marcelis, L.F.M.

doi:10.1016/j.scienta.2010.11.017

Cited by 146 publications

(80 citation statements)

References 35 publications

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“…Our results on photosynthetic performances of rose leaves lighted from the abaxial side represent useful data in the view of new lighting strategies for greenhouse crops (inter-lighting, inner canopy lighting), as well as useful input for modelling crop photosynthesis under different lighting systems Paradiso et al, 2011). Indeed, if crop models would assume similar efficiency for light on abaxial and adaxial leaf side, they would overestimate crop photosynthesis.…”

Section: Discussionmentioning

confidence: 87%

The Effect of Irradiating Adaxial or Abaxial Side on Photosynthesis of Rose Leaves

Paradiso¹,

Marcelis²

2012

Acta Hortic.

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In many cropping systems most of the light irradiates the adaxial side of leaves. However, in cropping systems with intra canopy lighting a reasonable fraction of light may irradiate even the abaxial side of the leaves. The aim of this study was to investigate the effect of irradiating the abaxial leaf side compared to irradiating the adaxial side, in rose plants grown in glasshouse with the bending technique. The instantaneous effects on the optical properties and the light response of photosynthesis were analysed in intact leaves. Results demonstrated that the rate of net photosynthesis was higher when leaves were lighted from the adaxial side compared to the abaxial side. This was the consequence of both a higher light absorption and higher quantum yield (photosynthesis per unit absorbed light) in adaxial-lighted leaves.

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Section: Discussionmentioning

confidence: 87%

The Effect of Irradiating Adaxial or Abaxial Side on Photosynthesis of Rose Leaves

Paradiso¹,

Marcelis²

2012

Acta Hortic.

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“…Therefore, theoretically, quantum yield of a dense plant canopy should be more equalized under green light. In fact, Paradiso et al [47] validated that canopy quantum efficiency of green light was not much lower than that of red light in roses (Rosa spp. 'Akito').…”

Section: Photosynthetically Less-efficient Lights: Far-red Green Anmentioning

confidence: 99%

“…Addition of photosynthetically less-efficient lights-It has been demonstrated that photosynthetically less-efficient lights such as green, far-red, and UV light could improve plant photosynthesis [47], hasten flowering and reverse the effects of phytochromes [42], and enhance the biosynthesis of pigments and phytochemicals in some plants [49,56], respectively. The other light spectra within the photosynthetically active region, such as cyan, yellow, and orange light, are also absorbed by photosynthetic pigments and utilized in leaves [12].…”

Section: Light As a Regulator: Controlling Herb Production With Ledsmentioning

confidence: 99%

Effects of Light Quality on Growth and Phytonutrient Accumulation of Herbs under Controlled Environments

Dou

Niu²,

et al. 2017

Horticulturae

137

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Abstract:In recent years, consumption of herb products has increased in daily diets, contributing to the prevention of cardiovascular diseases, chronic diseases, and certain types of cancer owing to high concentrations of phytonutrients such as essential oils and phenolic compounds. To meet the increasing demand for high quality herbs, controlled environment agriculture is an alternative and a supplement to field production. Light is one of the most important environmental factors influencing herb quality including phytonutrient content, in addition to effects on growth and development. The recent development and adoption of light-emitting diodes provides opportunities for targeted regulation of growth and phytonutrient accumulation by herbs to optimize productivity and quality under controlled environments. For most herb species, red light supplemented with blue light significantly increased plant yield. However, plant yield decreased when the blue light proportion (BP) reached a threshold, which varied among species. Research has also shown that red, blue, and ultraviolet (UV) light enhanced the concentration of essential oils and phenolic compounds in various herbs and improved antioxidant capacities of herbs compared with white light or sunlight, yet these improvement effects varied among species, compounds, and light treatments. In addition to red and blue light, other light spectra within the photosynthetically active region-such as cyan, green, yellow, orange, and far-red light-are absorbed by photosynthetic pigments and utilized in leaves. However, only a few selected ranges of light spectra have been investigated, and the effects of light quality (spectrum distribution of light sources) on herb production are not fully understood. This paper reviews how light quality affected the growth and phytonutrient accumulation of both culinary and medicinal herbs under controlled environments, and discusses future research opportunities to produce high quantity and quality herbs.

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“…In addition, LED lamps have the ability to control spectral composition, giving the opportunity to select the most favorable light spectrum for photosynthesis (Fig. 5) (Morrow 2008;Paradiso et al 2011;Gruda and Tanny 2014).…”

Section: New Technologies For Indoor Farmingmentioning

confidence: 99%

Urban vegetable for food security in cities. A review

Eigenbrod

Gruda

2014

Agron. Sustain. Dev.

335

198

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Global food production faces great challenges in the future. With a future world population of 9.6 billion by 2050, rising urbanization, decreasing arable land, and weather extremes due to climate change, global agriculture is under pressure. While today over 50 % of the world population live in cities, by 2030, the number will rise to 70 %. In addition, global emissions have to be kept in mind. Currently, agriculture accounts for around 20-30 % of global greenhouse gas emissions. Shifting food production to locations with high demands reduces emissions and mitigates climate change. Urban horticulture increases global food production by exploiting new locations for cultivation. However, higher land prices and urban pollution constrain urban horticulture. In this paper, we review different urban cultivation systems throughout the world. Our main findings from ecological, economical, and social aspects are: (1) Urban horticulture activities are increasing globally with at least 100 million people involved worldwide. With potential yields of up to 50 kg per m 2 per year and more, vegetable production is the most significant component of urban food production which contributes to global food security. (2) Organoponic and other low-input systems will continue to play an important role for a sustainable and secure food production in the future. (3) Despite the resource efficiency of indoor farming systems, they are still very expensive. (4) Integrating urban horticulture into educational and social programs improves nutrition and food security. Overlaying these, new technologies in horticultural research need to be adopted for urban horticulture to increase future efficiency and productivity. To enhance sustainability, urban horticulture has to be integrated into the urban planning process and supported through policies. However, future food production should not be "local at any price," but rather committed to increase sustainability.

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Spectral dependence of photosynthesis and light absorptance in single leaves and canopy in rose

Cited by 146 publications

References 35 publications

The Effect of Irradiating Adaxial or Abaxial Side on Photosynthesis of Rose Leaves

The Effect of Irradiating Adaxial or Abaxial Side on Photosynthesis of Rose Leaves

Effects of Light Quality on Growth and Phytonutrient Accumulation of Herbs under Controlled Environments

Urban vegetable for food security in cities. A review

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