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. 2017 Aug 9;6(3):32. doi: 10.3390/plants6030032

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Partitioning of excitation energy as a function of irradiance for Eutrema accessions and Arabidopsis. The fraction of excitation energy flow via PSII photochemistry (Φ_PSII) and non-photochemical dissipation pathways (Φ_NO and Φ_NPQ) in Yukon (Yu), Shandong (Sh) and Arabidopsis (At) were estimated for plants developed under a Yukon growth regime. Non-acclimated and cold acclimated plants were subjected to their respective growth temperatures as well as reciprocal temperature measurements. CACM = cold acclimated cold measured; CAWM = cold acclimated warm-measured; NACM = non-acclimated cold measured; NAWM = non-acclimated warm-measured; NPQ = non-photochemical quenching; PSII = photosystem II; Φ_NO = efficiency of constitutive non-photochemical energy dissipation and fluorescence; Φ_NPQ = efficiency of light dependent NPQ; Φ_PSII = PSII operating efficiency.