Abstract and keywords
Abstract (English):
The identification of traits variability and reactions to a combination of factors of drought and nitrogen deficiency can determine the adaptive potential of trees in relation to the factors under study. In the conditions of the vegetation experiment, the limits of variability of photosynthesis parameters and the activity of oxidative stress enzymes in 3-year-old oak seedlings were determined. According to the experimental data obtained, experimental trees of different families differ significantly not only in the intensity of photosynthesis, but also in the activation of enzymes.

Keywords:
English oak, photosynthesis intensity, oxidative stress enzymes, offspring, plus trees.
References

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