The influence of the ratio of red and far-red light on the morphometric indicators of potato in vitro
https://doi.org/10.32634/0869-8155-2025-397-08-78-83
Abstract
Relevance. The influence of red light (660 nm) to far-red light (730 nm) ratio (R/FR) on the growth and development of plants is an important aspect of photobiology and crop raising in green houses protected cultivation.
Methods. The experiment was carried out in a phytotron consisting of two sectors: the first with basic lighting (control), the second with additional 730 nm LEDs. The ratio of CS/DCS in the control sector was 9.9, in the experimental sector — 0.5. A photoperiod of 16 hours was set, provided by a Systec timer. The objects of the study were selected potato plants of the Grand and Julia varieties in vitro, propagated by cuttings on Murashige — Skuga agarized medium. The duration of the experiment is 28 days. After extraction from the tubes, the meristemic plants were scanned. The leaf area, plant length, and number of internodes were determined using the ImageJ program from digitized images of plants, and the mass of the aboveground part was measured on scales.
Results. The results showed that a reduced ratio of CS/DCS = 0.5 has a significant effect on the morphometric parameters of potato plants: stem length, leaf area, and the mass of the aboveground part of the plants. In both varieties, an increase in the length of the aboveground part of the plants was recorded, but no significant differences were found. An increase in leaf area under the action of additional DCS was noted in plants of both varieties: by 54.9% for the Grand variety, by 32% for the Julia variety. The dry matter content in the leaves of plants of both varieties turned out to be lower with a reduced ratio of CS/DCS, which may be due to the redistribution of resources for intensive growth and formation of biomass.
Supporting agencies: The work was carried out as part of a state assignment, registration number of the research and development project 122031100058-3.
About the Author
S. V. Shcherbyonok
Perm Agricultural Research Institute — Division of Perm Federal Research Center Ural Brunch Russian Academy of Sciences;
Perm State Agro-Technological University named after academician D.N. Prianishnikov
Russian Federation
Russian Federation
Sofiya Vyacheslavovna Shcherbyonok, Junior Research Assistant; Graduate Student
12 Culture Str., Lobanovo, Perm district, Perm region, 614532;
23 Petropavlovskaya Str., Perm, 614990
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For citations:
Shcherbyonok S.V. The influence of the ratio of red and far-red light on the morphometric indicators of potato in vitro. Agrarian science. 2025;(8):78-83. (In Russ.) https://doi.org/10.32634/0869-8155-2025-397-08-78-83
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