Prospects for the use of prolonged stress protection in the spring wheat cultivation

Abstract

An algorithm of prolonged stress protection of seeds and plants of two zoned spring wheat varieties has been developed and justified, including the selection for sowing purposes of batches of seeds with the highest adaptive resistance potential to the effects of an inhibitory phytohormone-ethylene, their subsequent post-harvest storage in containers filled with calibrated and purified seed grain as much as possible, isolating it from air exchange with atmospheric oxygen before sowing, which provides hypoxia conditions, as a result of which the development of oxidative stress and the synthesis of oxygen-dependent ethylene by microtraumatic grains is blocked. Seeds before sowing and plants at the IV-V stages of organogenesis are treated with multifunctional stress-protective growth regulators. The interaction of a set of methods for selecting stress-resistant seeds, their anti-stress storage, stress protection of plants in the most vulnerable to damaging effects phases of growth and development - seed germination, and when potential productivity is determined - differentiation and formation of rudimentary reproductive organs of the ear, allowed to stabilize, environmentally safe production process and increase grain yield by 11.1-12.6%, with with minimal energy and material costs.