Influence of growth regulators on the increase of seed productivity of F1 sweet pepper hybrids


L. Pylypenko*, O. Mogilnay, R. Krutko, Shabetya, S. Kondratenko, S. Kondratenko, О, O. Kuts, O. Melnyk and L. Terokhina

The results of research on the influence of growth regulators: gibberellic acid, succinic acid, and D-2Sl on increasing the seed productivity of sweet pepper F1 hybrids are highlighted. The research was conducted during 2018-2020 at the Institute of Vegetable and Melon NAAS, which is located in the Left Bank Forest-Steppe of Ukraine. The research material was the mother form of the sweet pepper hybrid Zlagoda F1 – L. 184/332 in the hybridization nursery. There were used drugs in plants (each in two versions of the rate of consumption): Gibberellic acid (1 mg/l; 5 mg/l), succinic acid (1 mg/l; 5 mg/l), the drug D-2Sl and 2.5 ml/l) - biologically active drug (growth regulator), a derivative of aspartic acid salt and 2-methylpyridine N-oxide, synthesized by the Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine. Treatment with drugs was performed by double spraying in the phase of the beginning of laying the reproductive organs and in the phase of bud formation with a size of 5mm.Control – treatment of plants with distilled water. It is established that drugs increase seed productivity by 30-50%, depending on the concentration. The highest result was found with the D-2Sl with a rate of 0.5 ml/L and gibberellic acid with a 1 mg/l compared to the control. The use of growth regulators on mother plants during hybridization has a positive effect on the formation of biometric parameters and productivity of the hybrid Zlagoda F1, which can be used as a reserve to increase seed yield and to increase seed yield improve its quality characteristics. Increasing the rate of use of growth regulators leads to a tendency to reduce the seed productivity of plants.

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