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Haijie Dou, Genhua Niu, Mengmeng Gu, and Joseph G. Masabni

were observed, which were lower than the basil grown under DLIs of 28.8 and 34.6 mol·m −2 ·d −1 in a growth chamber, respectively ( Beaman et al., 2009 ). In a glasshouse condition, there was no difference in photosynthesis of ‘Genovese’ basil between

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Qianqian Sheng and Zunling Zhu

overall reduction in growth but no obvious signs of visible damage ( Wellburn, 1990 ) and mainly affect the physiological metabolism of plants. Chlorophyll (Chl) is the most important plant pigment because it has a crucial role in photosynthesis ( Croft et

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Maren J. Mochizuki, Oleg Daugovish, Miguel H. Ahumada, Shawn Ashkan, and Carol J. Lovatt

strawberry ( CDFA, 2007 ). While numerous studies provide evidence of the physiological effect of elevated CO 2 concentration on many plant species in growth chambers, research on raspberry examined physiological processes such as photosynthesis, but yield

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K.J. Boote and N.B. Pickering

. Goudriaan for their excellent suggestions for adapting the sunlit leaf area index approach for hedgerow canopies. We thank J. Norman for his advice on the model and E.B. Blazey and G. Bourgeois for their assistance with photosynthesis measurements. The cost

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Meng Wei, Aijun Zhang, Hongmin Li, Zhonghou Tang, and Xiaoguang Chen

deficiency and N re-supply on growth and quality of leaf-vegetable sweetpotato. Therefore, the objectives of this study were to 1) investigate the effect of N deficiency and subsequently N-resupply on growth, photosynthesis and related physiological processes

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Liang Zheng, Qi Zhang, Kexin Zheng, Shumei Zhao, Pingzhi Wang, Jieyu Cheng, Xuesong Zhang, and Xiaowen Chen

depths with three replicates. The measurement positions were adjusted with the growth of the plants ( Fig. 2 ). The temperature was measured from 5 June 2017 to 10 July 2017. Measurements of leaf photosynthesis and solar radiation transmittance. The P n

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Toshio Shibuya, Ryosuke Endo, Yoshiaki Kitaya, and Saki Hayashi

. Contradictory results have been reported for NAR. Heraut-Bron et al. (1999) demonstrated that the R:FR did not affect photosynthesis per unit leaf area of white clover ( Trifolium repens L.). However, other reports demonstrated that low-R:FR light reduces the

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Soohyun Kang, Yating Zhang, Yuqi Zhang, Jie Zou, Qichang Yang, and Tao Li

Plant growth and development are largely affected by spectra properties of light through mediating photosynthesis and photomorphogenesis. UV radiation critically influences terrestrial plants, and many studies are now available concerning the effect

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S. Kumudini

Cranberry [Vaccinium macrocarpon (Ait.)] yield has been associated with photosynthate supply. However, the impact of temperature and radiation on photosynthesis of the cranberry plant is not well understood. The objective of this experiment was to characterize the photosynthetic response to radiation and temperature in order to develop a model for estimation of cranberry photosynthetic rates. Two cranberry cultivars, `Stevens' and `Ben Lear', were tested for photosynthetic response at air temperatures ranging from 15 to 35 °C and radiation intensities from 200 to 1200 μmol·m-2·s-1. Depending on temperature, maximum photosynthesis (Pmax) was ≈10 or 12 μmol CO2/m2/s (net photosynthesis) and the saturating radiation level was estimated to be 600 to 800 μmol·m-2·s-1. Cranberry quantum yield was estimated as 0.03 mol CO2/mol photon. Both models; Blackman and the nonrectangular hyperbola with a Θ (angle of curvature) of 0.99 were a good fit for measured photosynthetic rates under controlled environment conditions. The disparity between modeled predicted values, and observed values in the field around midday, indicates a reduction in potential photosynthetic rates in a diurnal cycle that is consistent with the phenomenon of midday depression.

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Krishna Nemali and Marc W. van Iersel

declines rapidly with small changes in substrate water content ( da Silva et al., 1993 ), making it more difficult for plants to extract water when Θ is low in the substrate. Photosynthesis is central to crop growth and highly sensitive to drought stress