Biological effect of dual-frequency laser pulse radiation during pre-sowing treatment of rice seeds at early stages of development under stressful environmental conditions

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Abstract

The biological effect of two-frequency laser pulsed radiation produced on copper vapor during pre-sowing treatment of rice seeds of Veles and Leader varieties at early stages of development in extreme stressful environmental conditions has been studied. The copper vapor laser used in the experiment had the following output characteristics: wavelengths of 510.6 nm (green radiation line) and 578.2 nm (yellow radiation line), pulse duration of 15 ns, repetition frequency of 10 kHz, total pulse power of 10 kW, energy-power ratio between the green and yellow radiation lines 3/1 The interaction of laser radiation with wavelengths of 510.6 and 578.2 nm in the nonlinear medium of the seed caused the formation of additional wavelengths: a total wavelength of 271 nm (ultraviolet radiation) and a difference wavelength of 4.37 microns. Exposure to each of the four wavelengths in its spectral range could lead to the initiation of at least four radiation-induced biochemical reactions. It is shown that pre-sowing treatment of rice seeds with two-frequency laser pulsed radiation for 5–20 seconds had a stimulating effect on the growth and development of rice (the greatest effect was when exposed to 5–10 seconds), and also increased its stability when grown in extreme stressful environmental conditions (moisture deficiency, depleted soil) at early stages of development.

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About the authors

L. M. Apasheva

N.N. Semenov Federal Research Centre for Chemical Physics of the Russian Academy of Sciences

Author for correspondence.
Email: ziraf@mail.ru

PhD in Biological Sciences

Russian Federation, Moscow

V. V. Savransky

Prokhorov General Physics Institute of the Russian Academy of Sciences

Email: ziraf@mail.ru

PhD in Physical and Mathematical Sciences

Russian Federation, Moscow

M. I. Budnik

Russian Academy of Missile and Artillery Sciences

Email: ziraf@mail.ru

PhD in Biological Sciences

Russian Federation, Moscow

L. A. Smurova

N.N. Semenov Federal Research Centre for Chemical Physics of the Russian Academy of Sciences

Email: ziraf@mail.ru

PhD in Chemical Sciences

Russian Federation, Moscow

E. N. Ovcharenko

N.N. Semenov Federal Research Centre for Chemical Physics of the Russian Academy of Sciences

Email: ziraf@mail.ru

PhD in Chemical Sciences

Russian Federation, Moscow

O. T. Kasaikina

N.N. Semenov Federal Research Centre for Chemical Physics of the Russian Academy of Sciences

Email: ziraf@mail.ru

Grand PhD in Chemical Sciences

Russian Federation, Moscow

A. V. Lobanov

N.N. Semenov Federal Research Centre for Chemical Physics of the Russian Academy of Sciences; Moscow Pedagogical State University

Email: ziraf@mail.ru

Grand PhD in Chemical Sciences

Russian Federation, Moscow; Moscow

I. V. Dyachenko

Russian Academy of Missile and Artillery Sciences

Email: ziraf@mail.ru

PhD in Engineering Sciences

Russian Federation, Moscow

A. V. Grudzinsky

Russian Academy of Missile and Artillery Sciences

Email: ziraf@mail.ru

PhD in Engineering Sciences

Russian Federation, Moscow

S. N. Sergeev

Institute of Engineering Acoustics

Email: ziraf@mail.ru

Grand PhD in Biological Sciences

Russian Federation, Dubna

K. A. Taraskin

Institute of Engineering Acoustics

Email: ziraf@mail.ru

Grand PhD in Chemical Sciences

Russian Federation, Dubna

E. K. Barnashova

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy

Email: ziraf@mail.ru

PhD in Agricultural Sciences

Russian Federation, Moscow

E. A. Vertikova

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy

Email: ziraf@mail.ru

Grand PhD in Agricultural Sciences

Russian Federation, Moscow

References

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2. Fig. Kinetic curves of the release of metabolites from rice seeds when they are soaked in the experimental groups and the control group using the example of the Leader rice variety: curve 1 – irradiation for 5 s; 2 – 10; 3 – 20; 4 – 40 s; 5 – without irradiation.

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