Abstract
Summary The primary processes of photosynthesis in bark phelloderm of one-year-old vine shoots were investigated by means of the delayed fluorescence method. All of the processes investigated (electron transport and oxygen-evolving activity as well as energization of membranes) in the bark phelloderm were shown to take place at a lower level of activity in comparison with the leaves. A further inactivation of the primary photosynthetic processes in the bark phelloderm is observed in the period of deep dormancy whereas after the end of this period a gradual reactivation of the processes takes place. An express method for determination of the beginning and the end of deep dormancy in vine shoots is proposed.
Published Version
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