Two-frequency pulsed laser irradiation to stimulate the development of coniferous trees

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Abstract

The possibility of using radiation from a two-frequency pulsed copper vapor laser with wavelengths of 510.6 nm and 578.2 nm with an exposure of 30 to 120 s to stimulate the development of coniferous trees (spruce, pine, larch) with a single seed irradiation is shown. The stimulation effect manifests itself at various early stages of development, such as the awakening of seeds in the aquatic environment in the first hours of the experiment (according to electron absorption spectroscopy data), seed germination, and seedling growth under stressful cultivation conditions. Possible causes of light exposure to plant seeds are discussed.

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About the authors

A. V. Lobanov

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences; Moscow Pedagogical State University; Plekhanov Russian University of Economics

Author for correspondence.
Email: av.lobanov@mpgu.su
Russian Federation, Moscow; Moscow; Moscow

L. M. Apasheva

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: av.lobanov@mpgu.su
Russian Federation, Moscow

L. A. Smurova

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: av.lobanov@mpgu.su
Russian Federation, Moscow

E. N. Ovcharenko

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: av.lobanov@mpgu.su
Russian Federation, Moscow

M. I. Budnik

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: av.lobanov@mpgu.su
Russian Federation, Moscow

V. V. Savransky

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: av.lobanov@mpgu.su
Russian Federation, Moscow

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Supplementary files

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2. Fig. 1. Electronic absorption spectra of metabolites released into the aquatic environment during soaking of spruce seeds for 20 min for the control group (1) and for the experimental group with irradiation for 90 s (2).

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3. Fig. 2. Kinetic curves of the release of metabolites during soaking of spruce seeds for the control group (1) and for the experimental group with irradiation for 90 s (2).

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