Тип публикации: статья из журнала
Год издания: 1997
Ключевые слова: delayed fluorescence; energy efficiency; photosynthesis; productivity, Delayed fluorescence, Energy efficiency, Photosynthesis, Productivity
Аннотация: Wild shade-requiring and light-requiring species, light-adapted and shade-adapted phenotypes of the same species, as well as wheat, radish, and amaranth cultivars different in productivities were studied. Energy efficiency of photosynthesis (EEP) was calculated from characteristics of light-induced changes in the yield of the delayed fluorescence of chlorophyll, and expressed as a fraction of thylakoid membrane potential utilized in dark reactions of photosynthesis. EEP was reliably (P > 95%) higher in shade-requiring species and shade phenotypes, than in light-loving species and light phenotypes (on average, 0.73 and 0.61, respectively). In the three groups of crop plants, a higher EEP was found in high-yield varieties (0.76 and 0.71 in wheat; 0.87 and 0.76 in radish; and 0.79 and 0.65 in amaranth, for low-and high-yield cultivars, respectively). Characteristics of the light-induced changes in delayed fluorescence yield in shade-tolerant plants were shown to be similar to those in high-yield plants. Apparently, the changes in photosynthetic apparatus brought about by selection for high productivity are similar to those associated with plant adaptation to low light intensities.
Журнал: RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Выпуск журнала: Vol. 44, Is. 6
Номера страниц: 731-736
ISSN журнала: 10214437
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA
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