PHOTOSYNTHETIC PRODUCTIVITY OF WHEAT UNDER PHOTOCULTURE CONDITIONS SIMULATING THE LIGHT-TEMPERATURE REGIME OF THE CULTIVATION REGION

Authors

  • N. А. Surin Krasnoyarsk Research Institute of Agriculture
  • А. G. Lipshin Krasnoyarsk Research Institute of Agriculture
  • L. V. Plekhanova Krasnoyarsk Research Institute of Agriculture
  • А. А. Tikhomirov Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”; M.F. Reshetnev Siberian State University of Science and Technology
  • V. V. Velichko Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”; M.F. Reshetnev Siberian State University of Science and Technology
  • S. А. Ushakova Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”
  • V. N. Shikhov Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”
  • А. M. Pavlova Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”
  • Е. S. Shklavtsova Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”

DOI:

https://doi.org/10.30850/vrsn/2021/4/8-12

Keywords:

Krasnoyarsk Territory, the experimental farm, wheat of the variety Krasnoyarsk 12, plant light culture, plant growth and development, yield

Abstract

The aim of the research was to find out the potential production characteristics of the Krasnoyarsk 12 variety wheat plants under light culture controlled conditions, as close as possible to the average light-temperature conditions of zoning (the experimental farm "Minino" of the Krasnoyarsk Territory), which in the future will allow us to determine the limiting environmental factors that affect the shortage of the crop and the decrease in its quality in the selected cultivation regions. To achieve this goal, wheat was grown by hydroponics on expanded clay under controlled environmental conditions at the intensity of photosynthetic radiation (PAR) (690±70) mmol/m2 s and at the photoperiod of 17 hours of light and 7 hours of darkness. To assess the state of plants at different stages of growth and development, we analyzed the morphometric characteristics of plants, the indicators of the state of the photosynthetic apparatus of leaves of all tiers of the main shoot of plants, plant biomass in different growth periods, indicators of CO2-gas exchange of canopies. A comparative characteristic of the yields of wheat plants of the variety Krasnoyarsk 12, grown in the conditions of light culture and in the fields of the experimental farm "MININO" in 2020, was carried out. It was established that the limiting factor of increasing the productivity of the variety in the field appeared to be the accelerated passage of individual interphase periods and the growing season as a whole in comparison with light culture. A longer growing season in light culture was primarily associated with a longer passage of the tillering phase, during which the primary tubercles were differentiated and the ear was laid. The obtained results of growing wheat plants in light culture more fully revealed the potential limits of productivity of the variety Krasnoyarsk 12. Those results were convincing evidence that the bioclimatic resources of the experimental farm "Minino" of the Krasnoyarsk Territory did not allow realizing the potential productivity of the variety and at the same time indicated the possibility of reducing the effects of limiting factors aimed at its implementation in production conditions.

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Published

2021-08-12

Issue

No. 4 (2021): July-August

Section

AGRONOMY

How to Cite

Surin N. А., Lipshin А. G., Plekhanova, L. V., Tikhomirov А. А., Velichko, V. V., Ushakova S. А., Shikhov, V. N., Pavlova А. M., & Shklavtsova Е. S. (2021). PHOTOSYNTHETIC PRODUCTIVITY OF WHEAT UNDER PHOTOCULTURE CONDITIONS SIMULATING THE LIGHT-TEMPERATURE REGIME OF THE CULTIVATION REGION. Vestnik of the Russian Agricultural Science, 4, 8-12. https://doi.org/10.30850/vrsn/2021/4/8-12