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Ian K. Atkins and Jennifer K. Boldt

, petunia, and verbena grown at three photosynthetic photon flux densities (90, 180, and 270 µmol·m −2 ·s −1 PPFD ) and measured at four CO 2 concentrations (200, 400, 600, and 800 µmol·mol −1 ). The light compensation point {LCP [ PPFD at which net

Free access

Timothy L. Righetti, Carmo Vasconcelos, David R. Sandrock, Samuel Ortega-Farias, Yerko Moreno, and Francisco J. Meza

intercept describes the relationship between leaf area and CO 2 assimilation. Photosynthetic rates for leaf areas slightly larger than the compensation point are low because leaf-area measurements include the leaf area that was present before net CO 2

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Qiansheng Li, Min Deng, Jianjun Chen, and Richard J. Henny

+ c, and the quantum yield of photosynthesis (A qe ) was calculated as the initial slope at A = 0 [calculated as b (a + c)]. The light compensation point was determined by solving this equation for PPFD at A of 0 μmol·m −2 ·s −1 . The light

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Min Wu and Chieri Kubota

photosynthetic rate ( k 1 ), initial slope ( k 2 ), and light compensation point ( k 3 ), as affected by cultivar and EC, are shown in Tables 2 and 3 . During the vegetative growth stage, the high EC and moderate EC treatments reduced the maximum

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Jennifer R. DeEll and Geoffrey B. Lum

), fruit are generally held in atmospheric conditions greater than their anaerobic compensation point, the point where fruit O 2 consumption and CO 2 production are at minimal rates ( Thewes et al., 2015 ; Yearsley et al., 1996 ). Consequently, fruit

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Jyotsna Joshi, Geng Zhang, Shanqi Shen, Kanyaratt Supaibulwatana, Chihiro K.A. Watanabe, and Wataru Yamori

“Plant factories with artificial lighting” are a new type of facility that can produce high yield with high quality all year round in a controlled environment (e.g., lighting, temperature, CO 2 concentration, and nutrients) ( Kozai, 2013a ; Yamori

Open access

Elisa Solis-Toapanta and Celina Gómez

compensation point for plants grown under DLI 8 , DLI 10 , and DLI Inc was significantly greater than that measured for plants grown under DLI 4 , ranging from 21.5 to 24.4 µmol·m ‒2 ·s ‒1 . No treatment differences were measured for the light saturation point

Open access

Joshua K. Craver, Krishna S. Nemali, and Roberto G. Lopez

,max ), photosynthetic rate at operating radiation intensity (A op ), light compensation point (LCP), light saturation point (LSP), and quantum yield (α) for petunia ‘Dreams Midnight’ seedlings grown in walk-in growth chambers with CO 2 concentration set points of 450

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Toshio Shibuya, Ryosuke Endo, Yuki Kitamura, Yoshiaki Kitaya, and Nobuaki Hayashi

light compensation point, estimated from the light-response curve of P n (data not shown), was 35 μmol·m −2 ·s −1 in FL H seedlings and 33 μmol·m −2 ·s −1 in ML seedlings. The ratio of P g of the FL H seedlings to that of the ML seedlings increased

Open access

Sydney Lykins, Katlynn Scammon, Brian T. Lawrence, and Juan Carlos Melgar

, starting from the highest irradiance at 2400 to 200 μmol·m –2 ·s –1 , and then at 100, 50, and 0 μmol·m –2 ·s –1 (for a detailed plotting of the curve in the area near the compensation point) at 2-min average intervals ( Evans and Santiago, 2014 ; Lobo et