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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 an Arabidopsis growth regime. Non-acclimated and cold acclimated plants were subjected to their respective growth temperatures as well as reciprocal temperature measurements. The blank graphs of the Yukon accession denote no results obtained due to poor growth of the accession in that condition. 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.