Fluorescent indices of barley and tagetes plants treated with physiologically active compounds

Olesya А. Kalmatskaya; Anna V. Malozemova; Vladimir A. Karavaev; Ekaterina I. Gunar

doi:10.1117/12.3009066

2 November 2023 Fluorescent indices of barley and tagetes plants treated with physiologically active compounds

Olesya А. Kalmatskaya, Anna V. Malozemova, Vladimir A. Karavaev, Ekaterina I. Gunar

Proceedings Volume 12920, XVI International Conference on Pulsed Lasers and Laser Applications; 129200W (2023) https://doi.org/10.1117/12.3009066
Event: XVI International Conference on Pulsed Lasers and Laser Applications, 2023, Tomsk, Russian Federation

Abstract

Treatment of barley plants with “Epin-Extra” (active ingredient epibrassinolide) in field experiments, under conditions of prolonged drought, led to a decrease in the values of the fluorescent index (F_M−F_T)/F_T in the first weeks after treatment, indicating the decrease in the photosynthetic activity of the plants. In vegetative experiments with barley, under conditions of optimal soil moisture, on the contrary, a stimulating effect of this growth regulator on the photosynthetic apparatus of plants was observed. In laboratory experiments with the ornamental plants of tagetes subjected to 3-day exposure to low temperatures (about 5 °C), a decrease in the fluorescent indices Ф_PSII, NPQ, and F_M/F_T, recorded using PAM fluorometry, was observed. It is assumed that this result testifies to disturbances of the structural and functional organization of the photosynthetic apparatus of plants known from the literature. After preliminary, before exposure to low temperatures, treatment of plants with preparations "Epin-Extra" and silicon-containing liquid organic fertilizer "Siliplant" no such disturbances were observed.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Olesya А. Kalmatskaya, Anna V. Malozemova, Vladimir A. Karavaev, and Ekaterina I. Gunar "Fluorescent indices of barley and tagetes plants treated with physiologically active compounds", Proc. SPIE 12920, XVI International Conference on Pulsed Lasers and Laser Applications, 129200W (2 November 2023); https://doi.org/10.1117/12.3009066

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available