[Experimental and theoretical study of temperature dependence of steady-state parameters of delayed luminescence induction in leaves of higher plants]. / Eksperimental'noe i teoreticheskoe issledovanie temperaturnoi zavisimosti statsionarnogo znacheniia induktsii zamedlennoi liuminestsentsii list'ev vysshikh rastenii.

The temperature dependence of delayed luminescence of Hibiscus rosa sinensis leaves was studied in the temperature range from -25 degrees C to degrees C. Temperature dependence of the steady-state delayed luminescence intensity has two maxima, at -10 and at +35 degrees C. For the theoretical modeling, the mathematical model of plant photosynthesis developed earlier was used. The temperature dependence of the delayed fluorescence induction was obtained by introducing into the model the temperature dependences for 12 rate constants derived from the data on the effect of temperature on different stages of photosynthesis. The theoretical temperature dependence of the steady-state delayed luminescence was shown to have the same shape as the experimental one.

[Influence of the sucrose outflow from leaves of higher plants on delayed luminescence induction in photosynthesis]. / Vliianie ottoka sakharozy iz list'ev vysshikh rastenii na induktsiiu zamedlennoi liuminestsentsii pri fotosinteze.

The effect of the transport of sucrose from leaves of higher plants on the width of the spectra of induction of delayed luminescence was studied. It was shown that the duration of the induction period decreases when the sucrose outflow from the leaves is limited by cooling the leaf petiole for two hours under light. It was concluded that the accumulation of sucrose in the conducting tissues of the leaf stimulates the increase in the CO2 fixation rate on rellumination after dark adaptation.