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has been cited by the following article:

• TITLE: Linear Relationships between Photosynthetic Rate and Photochemical Energy Expressed by PAR ×Fv/Fm

  AUTHORS: Dongbao Sun, Qingsuo Wang

  KEYWORDS: Net Photosynthetic Rate, PAR, Fv/Fm, Relationship

  JOURNAL NAME: American Journal of Plant Sciences, Vol.9 No.2, January 19, 2018

  ABSTRACT: Photosynthetic rate (Pn) of plants is simultaneously affected by photosynthetically active radiation (PAR) and maximum yield of primary photochemistry (Fv/Fm). In order to explore the quantitative relationship between Pn, PAR and Fv/Fm, those parameters were simultaneously measured for different plant species (maize, sunflower, daylily and alfalfa), growth stages and irrigation treatments. Results indicated that the diurnal variation of Pn had no significant correlation with that of Fv/Fm. Mean diurnal values of Pn were linearly correlated with those of Fv/Fm among the different irrigation treatments of alfalfa (p Pn and Fv/Fm only at midday (12:00 and 14:00) (p Pn and PAR × Fv/Fm (p Pn is significantly related to the photochemical energy (PAR × Fv/Fm), the light energy directly used in photochemical reactions of plants.