The life of the plant,

Timiriazev, K. A.; Sheremeteva, Anna

doi:10.5962/bhl.title.55603

Cited by 3 publications

(1 citation statement)

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“…One of the main factors limiting photosynthesis is light: its quantitative and qualitative characteristics. It is known that plants absorb visible light in the region of photosythetically active radiation (400-700 nm), with red (600-700 nm) and blue (400-450 nm) light photons being used most effectively [7][8][9]. In conditions of low lighting, red photons are very strong stimulators of photosynthesis [10][11][12] because they provide the highest photosynthetic quantum yield [12].…”

Section: Introductionmentioning

confidence: 99%

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Paskhin,

Aiyyzhy,

Pobedonostsev

et al. 2023

J. Compos. Sci.

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In this work, we investigated the effect of photoconversion covers based on ruby (chromium-doped alumina (Al2O3:Cr3+)) particles (PCC-R) on the growth and development of lettuce (Lactuca sativa) plants. Ruby particles (from 100 nm to 2 μm) were obtained by the sequential application of spall laser ablation and further laser fragmentation. The content of chromium ions relative to aluminum ions in the nanoparticles was 3.3 × 10−3. The covers with different densities of applied ruby particles (2 × 107 m−2 (PCC-R7), 2 × 108 m−2 (PCC-R8), 2 × 109 m−2 (PCC-R9)) were studied in the present work. The PCC-Rs had two wide bands of luminescence excitation. The first one was from 350 nm to 450 nm with a maximum at 405 nm, and the second one was from 500 nm to 600 nm with a peak at 550 nm. Synthesized covers emitted in the range of 650 nm to 750 nm, with a peak at 695 nm. It has been shown that PCC-R8, in contrast to PCC-R7 and PCC-R9, provided an increase in yield by 40% and was characterized by increased water use efficiency during dark respiration and assimilation of carbon dioxide in plants. It is assumed that the observed positive effect of PCC-R8 photoconversion covers is associated with the activation of regulatory mechanisms due to a qualitative change in the light spectrum.

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Section: Introductionmentioning

confidence: 99%

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Paskhin,

Aiyyzhy,

Pobedonostsev

et al. 2023

J. Compos. Sci.

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From Imperial to Socialist Nature Preservation

Josephson¹,

Dronin

Mnatsakanian

et al. 2013

An Environmental History of Russia

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Plant Photochemistry under Glass Coated with Upconversion Luminescent Film

et al. 2022

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It has been shown that the cultivation of plants under glass coated with nano-sized upconversion luminophores led to an increase in plant productivity and the acceleration of plant adaptation to ultraviolet radiation. In the present work, we examined the effect of upconversion nanopowders with the nominal composition Sr0.955Yb0.020Er0.025F2.045 on plant (Solanum lycopersicum) photochemistry. The composition, structure and size of nanoparticles were tested using X-ray pattern diffraction, scanning electron microscopy, and dynamic light scattering. Nanoparticles are capable of converting infrared radiation into red and green photons. Glasses coated with upconversion luminophores increase the intensity of photosynthetically active radiation and absorb the ultraviolet and far-red radiation. The chlorophyll a fluorescence method showed that plants growing under photoconversion and those growing under common film demonstrate different ability to utilize excitation energy via photosynthesis. It was shown that under ultraviolet and high light conditions, the efficiency of the photochemical reactions, the non-photochemical fluorescence quenching, and the electron transport remained relatively stable in plants growing under photoconversion film in contrast to plants growing under common film. Thus, cultivation of Solanum lycopersicum under photoconversion glasses led to the acceleration in plant growth due to greater efficiency of plant photochemistry under stress conditions.

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The life of the plant,

Cited by 3 publications

References 0 publications

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

Ruby Nanoparticles for Greenhouse Farming: Synthesis, Features and Application

From Imperial to Socialist Nature Preservation

Plant Photochemistry under Glass Coated with Upconversion Luminescent Film

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