Effect of Presowing Seed Treatment with Growth Regulators and Microfertilizers on Sowing Quality and Survival of Sunflower Lines
DOI:
https://doi.org/10.30835/2413-7510.2026.129.07Keywords:
sunflower, lines, survival, seed germination, seed dressings, growth stimulants, microfertilizers, seed productionAbstract
The article presents results of a comprehensive study on the impact of presowing seed treatment with growth stimulants, antistress agents, and microfertilizers on the sowing quality and plant survival of self-pollinated sunflower lines. The study was conducted at the Yuriev Plant Production Institute of NAAS in 2022–2024. The soil is typical chernozems. The sterile analogs of the lines ‘Skh808A’, ‘Skh51A’, and ‘Skh17A’. The evaluation included germination energy, laboratory germination, field emergence, and plant survival rates depending on the treatments with different compounds and their combinations. It was found that all studied factors—line genotype, year of cultivation, and treatment—had a statistically significant impact on the seed sowing qualities. The highest germination energy and laboratory germination rates were observed in ‘Skh17A’, while ‘Skh51A’ was characterized by the lowest values and higher variability. The application of some compounds and their combinations increased performance compared to the control; however, the effectiveness was largely determined by the genotype. The field germination rate was high across all experiments, amounting to 90–96%, with combined treatments proving most effective.
The plant survival remained consistently high (95–98%) regardless of the treatment, due to the high baseline level of this trait. Genotype made the largest contribution to the variation in survival (up to 35%), while the agents influence was limited. Thus, the study demonstrated that presowing seed treatment with growth stimulants and microfertilizers is an effective component of sunflower cultivation technology, and its efficacy is governed by the genotype × preparation interaction.
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