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学者姓名：徐永
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Abstract ：
Due to advances in the industrial development of light-emitting diodes (LEDs), much research has been conducted in recent years to get a better understanding of how plants respond to these light sources. This study investigated the effects of different LED-based light regimes on strawberry plant development and performance. The photosynthetic pigment content, biochemical constituents, and growth characteristics of strawberry plants were investigated using a combination of different light intensities (150, 200, and 250 mu mol m(-2) s(-1)), qualities (red, green, and blue LEDs), and photoperiods (14/10 h, 16/8 h, and 12/12 h light/dark cycles) compared to the same treatment with white fluorescent light. Plant height, root length, shoot fresh and dry weight, chlorophyll a, total chlorophyll/carotenoid content, and most plant yield parameters were highest when illuminated with LM7 [intensity (250 mu mol m(-2) s(-1)) + quality (70% red/30% blue LED light combination) + photoperiod (16/8 h light/dark cycles)]. The best results for the effective quantum yield of PSII photochemistry Y(II), photochemical quenching coefficient (qP), and electron transport ratio (ETR) were obtained with LM8 illumination [intensity (250 mu mol m(-2) s(-1)) + quality (50% red/20% green/30% blue LED light combination) + photoperiod (12 h/12 h light/dark cycles)]. We conclude that strawberry plants require prolonged and high light intensities with a high red-light component for maximum performance and biomass production.
Keyword ：
LED light LED light light intensity light intensity light quality light quality orthogonal design orthogonal design photoperiod photoperiod photosynthetic pigments photosynthetic pigments
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| GB/T 7714 | Guiamba, Helio Dos Santos Suzana , Zhang, Xiwen , Sierka, Edyta et al. Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems [J]. | FRONTIERS IN PLANT SCIENCE , 2022 , 13 . |
| MLA | Guiamba, Helio Dos Santos Suzana et al. "Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems" . | FRONTIERS IN PLANT SCIENCE 13 (2022) . |
| APA | Guiamba, Helio Dos Santos Suzana , Zhang, Xiwen , Sierka, Edyta , Lin, Kui , Ali, Muhammad Moaaz , Ali, Waleed M. et al. Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems . | FRONTIERS IN PLANT SCIENCE , 2022 , 13 . |
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Tomato is a globally strategic crop and consumers need it throughout the year. To have a healthy and productive tomato plant, a high-quality seedling is a necessity. Toward this end, the current research was to improve a system for producing tomato seedlings in plant factories using light-emitting diodes (LEDs). The results indicated that tomato seedlings of both cultivars under (Red 70% + Blue 30%) showed the greatest plant height and the largest total leaf area. The best treatment for the accumulation of soluble protein and soluble sugar contents for Gangmu No.1 and Millennium cultivars were (Red 50%+Green 20%+ Blue 30%) and Red 100%, respectively. The Non-Photochemical Quenching under (Red 50%+Green 20%+ Blue 30%) treatment was the lowest for Gangmu No.1, while it was the lowest under white fluorescent light for Millennium. The electron transport rate under white fluorescent light treatment was the highest for Gangmu No.1, while it was the highest under (Red 70% + Blue 30%) for Millennium. The results indicated that the mixture of red and blue at (Red 70% + Blue 30%) was beneficial for the growth of tomato seedlings for both cultivars, which could be efficiently used in plant factories and provide some data for different LED light ratios applicable in a closed system to demonstrate how to get the best lighting conditions for tomato seedlings.
Keyword ：
LEDs light ratio LEDs light ratio Non-Photochemical Quenching (NPQ) Non-Photochemical Quenching (NPQ) Performing tomato seedlings Performing tomato seedlings Photochemical Quenching (qP) Photochemical Quenching (qP) Photo-morphology Photo-morphology
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| GB/T 7714 | Yousef, Ahmed Fathy , Xu, Yong , Chen, Faxing et al. THE INFLUENCE OF LEDS LIGHT QUALITY ON THE GROWTH PIGMENTS BIOCHEMICAL AND CHLOROPHYLL FLUORESCENCE CHARACTERISTICS OF TOMATO SEEDLINGS (SOLANUM LYCOPERSICUM L.) [J]. | FRESENIUS ENVIRONMENTAL BULLETIN , 2021 , 30 (4) : 3575-3588 . |
| MLA | Yousef, Ahmed Fathy et al. "THE INFLUENCE OF LEDS LIGHT QUALITY ON THE GROWTH PIGMENTS BIOCHEMICAL AND CHLOROPHYLL FLUORESCENCE CHARACTERISTICS OF TOMATO SEEDLINGS (SOLANUM LYCOPERSICUM L.)" . | FRESENIUS ENVIRONMENTAL BULLETIN 30 . 4 (2021) : 3575-3588 . |
| APA | Yousef, Ahmed Fathy , Xu, Yong , Chen, Faxing , Lin, Kui , Zhang, Xiwen , Guiamba, Hellio et al. THE INFLUENCE OF LEDS LIGHT QUALITY ON THE GROWTH PIGMENTS BIOCHEMICAL AND CHLOROPHYLL FLUORESCENCE CHARACTERISTICS OF TOMATO SEEDLINGS (SOLANUM LYCOPERSICUM L.) . | FRESENIUS ENVIRONMENTAL BULLETIN , 2021 , 30 (4) , 3575-3588 . |
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It is already known that there are many factors responsible for the successful formation of a graft union. However, the role of light has been little studied. In an anatomical study, Scanning Electronic Microscope (SEM) was used to explore the effects of different light-emitting diodes (LEDs) on graft union formation in grafted tomato. In addition, the expression genes related to Auxin hormone signaling pathway (SAUR67, AUX1, ARF30, and LAX3) was investigated. The obtained results showed that the concrescence process occurred faster under R7:B3 light conditions, as compared to blue (B) and white fluorescent (WFL) lights. Red light application caused a delay in the vascular tissue differentiation, which may lead to callus development on both sides, causing junctional failure and resulting in ineffective graft junctional arrangement. The expression of genes related to Auxin hormone significantly increased by R7:B3 application. We suggest that LED spectra affects the graft development of tomato plants and can improve the performance of grafted tomato seedlings.
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| GB/T 7714 | Yousef, Ahmed Fathy , Ali, Muhammad Moaaz , Rizwan, Hafiz Muhammad et al. Light quality and quantity affect graft union formation of tomato plants [J]. | SCIENTIFIC REPORTS , 2021 , 11 (1) . |
| MLA | Yousef, Ahmed Fathy et al. "Light quality and quantity affect graft union formation of tomato plants" . | SCIENTIFIC REPORTS 11 . 1 (2021) . |
| APA | Yousef, Ahmed Fathy , Ali, Muhammad Moaaz , Rizwan, Hafiz Muhammad , Gad, Ahmed Gomaa , Liang, Dangdi , Li Binqi et al. Light quality and quantity affect graft union formation of tomato plants . | SCIENTIFIC REPORTS , 2021 , 11 (1) . |
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Deep learning is known as a promising multifunctional tool for processing images and other big data. By assimilating large amounts of heterogeneous data, deep-learning technology provides reliable prediction results for complex and uncertain phenomena. Recently, it has been increasingly used by horticultural researchers to make sense of the large datasets produced during planting and postharvest processes. In this paper, we provided a brief introduction to deep-learning approaches and reviewed 71 recent research works in which deep-learning technologies were applied in the horticultural domain for variety recognition, yield estimation, quality detection, stress phenotyping detection, growth monitoring, and other tasks. We described in detail the application scenarios reported in the relevant literature, along with the applied models and frameworks, the used data, and the overall performance results. Finally, we discussed the current challenges and future trends of deep learning in horticultural research. The aim of this review is to assist researchers and provide guidance for them to fully understand the strengths and possible weaknesses when applying deep learning in horticultural sectors. We also hope that this review will encourage researchers to explore some significant examples of deep learning in horticultural science and will promote the advancement of intelligent horticulture.
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| GB/T 7714 | Yang, Biyun , Xu, Yong . Applications of deep-learning approaches in horticultural research: a review [J]. | HORTICULTURE RESEARCH , 2021 , 8 (1) . |
| MLA | Yang, Biyun et al. "Applications of deep-learning approaches in horticultural research: a review" . | HORTICULTURE RESEARCH 8 . 1 (2021) . |
| APA | Yang, Biyun , Xu, Yong . Applications of deep-learning approaches in horticultural research: a review . | HORTICULTURE RESEARCH , 2021 , 8 (1) . |
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In recent years, much effort has been devoted to understanding the response of plants to various light sources, largely due to advances in industry light-emitting diodes (LEDs). In this study, the effect of different light modes on rocket (Eruca sativa. Mill.) photosynthetic performance and other physiological traits was evaluated using an orthogonal design based on a combination between light intensity, quality, and photoperiod factors. Some morphological and biochemical parameters and photosynthetic efficiency of the plants were analyzed. Plants grew in a closed chamber where three light intensities (160, 190, and 220 mu mol m(-2) s(-1)) provided by LEDs with a combination of different ratios of red, green, and blue (R:G:B- 7:0:3, 3:0:7, and 5:2:3) and three different photoperiods (light/dark -10/14 h, 12/12 h, and 14/10 h) were used and compared with white fluorescent light (control). This experimental setup allowed us to study the effect of 9 light modes (LM) compared to white light. The analyzes performed showed that the highest levels of chlorophyll a, chlorophyll b, and carotenoids occurred under LM4, LM3, and LM1, respectively. Chlorophyll a fluorescence measurement showed that the best effective quantum yield of PSII photochemistry Y(II), non-photochemical quenching (NPQ), photochemical quenching coefficient (qP), and electron transport ratio (ETR) were obtained under LM2. The data showed that the application of R7:G0:B3 light mode with a shorter photoperiod than 14/10 h (light/dark), regardless of the light intensity used, resulted in a significant increase in growth as well as higher photosynthetic capacity of rocket plants. Since, a clear correlation between the studied traits under the applied light modes was not found, more features should be studied in future experiments.
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| GB/T 7714 | Elmardy, Naif Ali , Yousef, Ahmed F. , Lin, Kui et al. Photosynthetic performance of rocket (Eruca sativa. Mill.) grown under different regimes of light intensity, quality, and photoperiod [J]. | PLOS ONE , 2021 , 16 (9) . |
| MLA | Elmardy, Naif Ali et al. "Photosynthetic performance of rocket (Eruca sativa. Mill.) grown under different regimes of light intensity, quality, and photoperiod" . | PLOS ONE 16 . 9 (2021) . |
| APA | Elmardy, Naif Ali , Yousef, Ahmed F. , Lin, Kui , Zhang, Xiwen , Ali, Muhammad Moaaz , Lamlom, Sobhi F. et al. Photosynthetic performance of rocket (Eruca sativa. Mill.) grown under different regimes of light intensity, quality, and photoperiod . | PLOS ONE , 2021 , 16 (9) . |
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It is already known that there are many factors responsible for the successful grafting process in plants, including light intensity. However, the influence of the spectrum of light-emitting diodes (LEDs) on this process has almost never been tested. During the pre-grafting process tomato seedlings grew for 30 days under 100 mu mol m(-2) s(-1) of mixed LEDs (red 70%+ blue 30%). During the post-grafting period, seedlings grew for 20 days under the same light intensity but the lightening source was either red LED, mixed LEDs (red 70% + blue 30%), blue LED or white fluorescent lamps. This was done to determine which light source(s) could better improve seedling quality and increase grafting success. Our results showed that application of red and blue light mixture (R7:B3) caused significant increase in total leaf area, dry weight (total, shoot and root), total chlorophyll/carotenoid ratio, soluble protein and sugar content. Moreover, this light treatment maintained better photosynthetic performance i.e. more effective quantum yield of PSII photochemistry Y(II), better photochemical quenching (qP), and higher electron transport rate (ETR). This can be partially explained by the observed upregulation of gene expression levels of PsaA and PsbA and the parallel protein expression levels. This in turn could lead to better functioning of the photosynthetic apparatus of tomato seedlings and then to faster production of photoassimilate ready to be translocated to various tissues and organs, including those most in need, i.e., involved in the formation of the graft union.
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| GB/T 7714 | Yousef, Ahmed F. , Ali, Muhammad M. , Rizwan, Hafiz M. et al. Effects of light spectrum on morpho-physiological traits of grafted tomato seedlings [J]. | PLOS ONE , 2021 , 16 (5) . |
| MLA | Yousef, Ahmed F. et al. "Effects of light spectrum on morpho-physiological traits of grafted tomato seedlings" . | PLOS ONE 16 . 5 (2021) . |
| APA | Yousef, Ahmed F. , Ali, Muhammad M. , Rizwan, Hafiz M. , Ahmed, Mohamed A. A. , Ali, Waleed M. , Kalaji, Hazem M. et al. Effects of light spectrum on morpho-physiological traits of grafted tomato seedlings . | PLOS ONE , 2021 , 16 (5) . |
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It is already known that the process of photosynthesis depends on the quality and intensity of light. However, the influence of the new light sources recently used in horticulture, known as Light Emitting Diodes (LEDs), on this process is not yet fully understood. Chlorophyll a fluorescence measurement has been widely used as a rapid, reliable, and noninvasive tool to study the efficiency of the photosystem II (PSII) and to evaluate plant responses to various environmental factors, including light intensity and quality. In this work, we tested the responses of the tomato photosynthetic apparatus to different light spectral qualities. Our results showed that the best performance of the photosynthetic apparatus was observed under a mixture of red and blue light (R7:B3) or a mixture of red, green and blue light (R3:G2:B5). This was demonstrated by the increase in the effective photochemical quantum yield of PSII (Y[II]), photochemical quenching (qP) and electron transport rate (ETR). On the other hand, the mixture of red and blue light with a high proportion of blue light led to an increase in non-photochemical quenching (NPQ). Our results can be used to improve the production of tomato plants under artificial light conditions. However, since we found that the responses of the photosynthetic apparatus of tomato plants to a particular light regime were cultivar-dependent and there was a weak correlation between the growth and photosynthetic parameters tested in this work, special attention should be paid in future research.
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| GB/T 7714 | Yousef, Ahmed F. , Ali, Muhammad M. , Rizwan, Hafiz M. et al. Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination [J]. | PLOS ONE , 2021 , 16 (4) . |
| MLA | Yousef, Ahmed F. et al. "Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination" . | PLOS ONE 16 . 4 (2021) . |
| APA | Yousef, Ahmed F. , Ali, Muhammad M. , Rizwan, Hafiz M. , Tadda, Shehu Abubakar , Kalaji, Hazem M. , Yang, Hao et al. Photosynthetic apparatus performance of tomato seedlings grown under various combinations of LED illumination . | PLOS ONE , 2021 , 16 (4) . |
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本发明涉及一种绝缘材料电树枝老化装置及其工作方法，该装置包括机架以及设于机架上的夹持装置、加热装置和高压针电极，所述夹持装置包括两个对称设置以夹持绝缘试样的夹持板，所述两个夹持板分别经调节机构与机架左、右两侧连接，以调节夹持松紧度，所述加热装置设于夹持装置下侧，所述加热装置包括加热台、加热台支架和加热器，所述加热台经加热台支架安装于加热器上，所述加热台上设有铜板地电极，所述夹持板下部靠设于铜板地电极上，所述高压针电极前端插入绝缘试样中，所述高压针电极经导线连接外部高压电源，所述铜板地电极接地。该装置及其工作方法不仅有利于模拟高压电缆的实际工况和电老化过程，而且结构简单，易于操作。
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| GB/T 7714 | 林添堤 , 杨浩 , 徐永 et al. 一种绝缘材料电树枝老化装置及其工作方法 : CN202010054798.3[P]. | 2020-01-17 . |
| MLA | 林添堤 et al. "一种绝缘材料电树枝老化装置及其工作方法" : CN202010054798.3. | 2020-01-17 . |
| APA | 林添堤 , 杨浩 , 徐永 , 邵涛 . 一种绝缘材料电树枝老化装置及其工作方法 : CN202010054798.3. | 2020-01-17 . |
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Red light significantly affects the expression of plant photoreceptor genes and influences stomatal development through crosstalk of the constitutive photomorphogenic 1-cryptochrome-phytochrome signaling pathway. When blue light was replaced with red light, the expression levels of ZmCry1, ZmPhyB1, ZmEPF2, and ZmEPFL9 were enhanced, whereas that of ZmCOP1 was restricted. Moreover, the expression levels of ZmSPCH and ZmMUTE were also enhanced, but they were generally lower than those under white light. Consequently, stomatal formation, which was determined by net photosynthesis, stomatal conductance, intercellular CO2 concentration, and transpiration rate, was inhibited through decreased stomatal index and stomatal density. We conclude that red light positively regulates EPFL9 in the intercellular signaling but reduces the positive regulation of blue light on CON and epidermal patterning factor 2 in the intracellular and intercellular signaling; therefore, though red light promotes the gene's function on stomatal development of seedling maize, blue light maybe dominant to red light in seedling stage.
Keyword ：
COP1 COP1 EPFL9 EPFL9 light-emitting diode (LED) light-emitting diode (LED) light quality light quality
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| GB/T 7714 | Liu, Tie Dong , Zhang, Xi Wen , Xu, Yong . Influence of red light on the expression of genes on stomatal formation in maize seedlings [J]. | CANADIAN JOURNAL OF PLANT SCIENCE , 2020 , 100 (3) : 296-303 . |
| MLA | Liu, Tie Dong et al. "Influence of red light on the expression of genes on stomatal formation in maize seedlings" . | CANADIAN JOURNAL OF PLANT SCIENCE 100 . 3 (2020) : 296-303 . |
| APA | Liu, Tie Dong , Zhang, Xi Wen , Xu, Yong . Influence of red light on the expression of genes on stomatal formation in maize seedlings . | CANADIAN JOURNAL OF PLANT SCIENCE , 2020 , 100 (3) , 296-303 . |
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Light is the major source of energy for plants and as such has a profound effect on plant growth and development. Red and blue lights have been considered to best drive photosynthetic metabolism and are beneficial for plant growth and development, and green light was seen as a signal to slow down or stop. In this study, Arabidopsis thaliana (Arabidopsis) was used to investigate the effects of red, blue and green lights on the growth and development of plants from seed germination to seeding. Results demonstrated that red light showed a promotion effect but blue light a prohibition one in most stages except for the flowering time in which the effect of each light was just reversed. When mixed with red or blue light, green light generally at least partially cancelled out the effects caused by each of them. Results also showed that the same number of photons the plant received could cause different effects and choosing the right combination of different color of lights is essential in both promoting the growth and development of plants and reducing the energy consumption of lighting in plant factory.
Keyword ：
Arabidopsis thaliana Arabidopsis thaliana LED LED light quality light quality photomorphogenesis photomorphogenesis plant growth plant growth
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| GB/T 7714 | Zou, Tengyue , Wu, Bing , Wu, Wen et al. Effects of Different Spectra from LED on the Growth, Development and Reproduction of Arabidopsis thaliana [J]. | PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY , 2020 , 89 (2) : 275-289 . |
| MLA | Zou, Tengyue et al. "Effects of Different Spectra from LED on the Growth, Development and Reproduction of Arabidopsis thaliana" . | PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY 89 . 2 (2020) : 275-289 . |
| APA | Zou, Tengyue , Wu, Bing , Wu, Wen , Ge, Long , Xu, Yong . Effects of Different Spectra from LED on the Growth, Development and Reproduction of Arabidopsis thaliana . | PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY , 2020 , 89 (2) , 275-289 . |
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