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Powless, S. B. and Bjorkman, O. (1982) Hight light and water stress effects on photosynthesis in Nerium oleander. II. Inhibition of photosynthesis reaction under water stress: Interaction with light level. In: Carnegie Institution Year Book, 81, 76-77.

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• TITLE: Correlations between delayed fluorescence of chlorophyll, metabolism and yield of plants. I. Influence of fertilizers on correlations

  AUTHORS: Armen B. Avagyan

  KEYWORDS: Delayed Fluorescence of Chlorophyll; Metabolism; Nitrogen; Phosphorus and Potash Fertilizers; Moisture; Poisonous; Yield

  JOURNAL NAME: Journal of Biophysical Chemistry, Vol.1 No.1, June 1, 2010

  ABSTRACT: The increase of the potash fertilizer dose in-duced a raise in efficiency influence of the ni-trogen fertilizer, optimisation of phosphorous fertilizer effect, enhancement of leaf protein production, expansion of assimilating surface and yield growth. In the period of yield forma-tion, the parameters of delayed fluorescence of chlorophyll (DF) of leaf wholly corresponded with key factors that had a dramatic influence on the effectiveness of yield formation. The maximum level of DF amplitude mostly de-pended on the activity of nitrogen metabolism and presumably on active PSII concentration changes per square unit. Half-decay time of this amplitude was predominantly identified by the level of carbohydrate metabolism in the overall plant system, including the quantity of its products and, therefore, mostly by correspon-dence with yield. This is a biological base trig-gering the use of DF parameters for system analyses of plant production process.