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Elisa Solis-Toapanta, Andrei Kirilenko, and Celina Gómez

widespread use of LED lamps has contributed to the significant confusion about plant responses to light quantity and quality. For example, claims about light sources that can “optimize” indoor plant production may be disseminating misleading information. That

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Liang Zheng, Huaming He, and Weitang Song

light, whereas phyB controls the photoreversible effects of low fluency ( Shinomura et al., 1996 ). Impact of Light Quality on Plants Plant productivity is not only influenced by light quantity through photosynthetic activity by which carbohydrates are

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Koichi Nomura, Masahiko Saito, Ikunao Tada, Tadashige Iwao, Tomihiro Yamazaki, Nobuyuki Kira, Yasuyo Nishimura, Makito Mori, Esteban Baeza, and Masaharu Kitano

-related parameters of sweet pepper plants Acta Hort. 956 545 552 Marcelis, L.F.M. Broekhuijsen, A.G.M. Meinen, E. Nijs, E.M.F.M. Raaphorst, M.G.M. 2006 Quantification of the growth response to light

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Kun Li, Qi-Chang Yang, Yu-Xin Tong, and Ruifeng Cheng

received by plants, the daily light integral (DLI) was calculated with the PPF detected at the heights of the plant canopy at certain growing stages ( Table 1 ) to further illustrate the light quantity of different illumination schedules. Fig. 4. The

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Saquib Waheed, Yuan Peng, and Lihui Zeng

reproductive state in many fruit crops ( Wilkie et al., 2008 ). Several studies in A. thaliana have revealed that the light quantity and quality affect the GI transcription ( Fowler et al., 1999 ; Mishra and Panigrahi, 2015 ). Our results showed that pDlGI

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Dominic P. Petrella, James D. Metzger, Joshua J. Blakeslee, Edward J. Nangle, and David S. Gardner

et al., 2014 ). Transient anthocyanin accumulation occurs with changes in light quantity and/or quality, and has been documented in a variety of plants including: tomato, Arabidopsis , maize, sorghum, rye, red cabbage, and mustard ( Chalker

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Kellie J. Walters, Bridget K. Behe, Christopher J. Currey, and Roberto G. Lopez

, P.A. 1996 Light intensity and spectral quality affect fruit growth and shelf life of greenhouse-grown long English cucumber J. Amer. Soc. Hort. Sci. 121 1168 1173 Litvin, A.G. 2019 Quantifying the effects of light quantity and quality on culinary

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Alexandra Boini, Enrico Muzzi, Aude Tixier, Maciej Zwieniecki, Luigi Manfrini, and Luca Corelli Grappadelli

burst, sugar signaling for growth resumption, and chloroplast biogenesis ( Signorelli et al., 2018 ). The timing of light application can have both promotive and inhibitive effects ( Gur, 1985 ; Samish et al., 1967 ). Light quantity manipulation during

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Suzanne O’Connell

; Stafford, 1994 ; Steyn et al., 2002 ). High tunnels may affect the accumulation of anthocyanins by impacting both the total light quantity and quality reaching the crop canopy. Growers use a wide variety of polyethylene films to construct high tunnel roofs

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W. Garrett Owen and Roberto G. Lopez

anthocyanins are known to contribute to leaf color ( Gazula et al., 2007 ). Environmental factors such as light quantity, quality, and duration and temperature can strongly influence the accumulation of these pigments ( Owen and Lopez, 2015 ). In the present