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Daedre S. Craig and Erik S. Runkle

to the P FR form. The P FR form largely converts back to the P R form on absorbing FR light or during a natural, gradual conversion during the dark period ( Thomas and Vince-Prue, 1997 ). Although the total pool of phytochrome in the plant is

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Fumiomi Takeda, D. Michael Glenn, and Gary W. Stutte

trays of ‘Strawberry Festival’ transplants with red light LED lamps and another two trays not receiving the red light treatment were placed in an EGC M-36 growth chamber (Environmental Growth Chambers, Chagrin Falls, OH) under a 16-h light/8-h dark

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Cynthia B. McKenney, Amber Bates, Kaylee Decker, and Ursula K. Schuch

Horticulture Society, 2001 ). The disk florets were golden (yellow group 12A) with surrounding darker ray flowers (orange group N25D) and a light green foliage (green group 137D). ‘Raider Gold’ blooms from late spring to first frost. When flowers senesce, the

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

under a 10-h photoperiod ( Wen, 2009 ). The air temperature was maintained at 20 °C, while the mean temperature measured at the top of the canopy in each treatment described below was (± se ) 23.5 ± 0.5/21 ± 0.5 °C (light/dark cycle), synchronized with

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Celina Gómez, Robert C. Morrow, C. Michael Bourget, Gioia D. Massa, and Cary A. Mitchell

enables profitable production during winter, when vegetable prices are highest ( Cook and Calvin, 2005 ). Nevertheless, several greenhouse facilities are also located in light-limited northern climates (low light intensities and short days), where optimal

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Elisa Solis-Toapanta and Celina Gómez

k where A net is the net CO 2 assimilation rate, Rd is dark respiration, θ is the quantum use efficiency, PPF is the incident irradiance, A max is the maximum gross CO 2 assimilation (light-saturated net CO 2 assimilation + Rd ), and k

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Carole L. Bassett and D. Michael Glenn

HY5. HY5 acts as a central regulator in light signaling pathways driven by red, blue/UV-A, and UV-B. COP1, an E3 ligase, targets HY5 for degradation in the dark. Under red or blue light, complexes formed between PHYA–E and PIFs (red) or CRY1 and SPA1

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Shu Hsien Hung, Chun Chi Wang, Sergei Veselinov Ivanov, Vera Alexieva, and Chih Wen Yu

volume) mixture. Seeded pots were placed in a greenhouse at 25 °C for 7 d with a 14 h light/10 h dark regime. Plants were watered daily without adding any nutrient. Treatments. For cold acclimation, the 5-d-old seedlings were chilled at 10 °C for

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Guoting Liang, Junhui Liu, Jingmin Zhang, and Jing Guo

as minimum chlorophyll fluorescence yield of the dark-adapted state ( F 0 ), maximal fluorescence yield of the dark-adapted state ( F M ), steady-state fluorescence yield ( F S ), minimum fluorescence of the light-adapted state ( F 0 '), and maximal

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Geoffrey Weaver and Marc W. van Iersel

processes, which include the xanthophyll cycle and molecular rearrangement of the chlorophyll antennae and photosynthetic reaction centers ( Demmig-Adams et al., 2012 ; Horton, 2012 ; Rochaix, 2014 ; Ruban, 2015 ). Because light drives photosynthesis more