Impact of retardants on sugar beet seed productivity
O.A. Shevchuk, O.O. Khodanitska, O.O. Tkachuk, O.A. Matviichuk, S.V. Polyvanyi, L.A. Golunova, O.V. Kniaziuk, O.L. Zavalniuk
The study aimed to determine the aftereffects of dextrel and paclobutrazol on the seed productivity of sugar beet plants in the year following the treatment and the treatment of flowering shoots. Methods. Field research, analytical and statistical processing of research results. Results. The use of drugs of the inhibitory type of dextrel (0.3%) and paclobutrazol (0.05%) in the first year of the culture growing in the phase of formation of 28 and 38-40 leaves led to an increase in root mass, which provided intensive plant growth in the second year of vegetation. Our research results indicate an increase in seed productivity of beet plants in the second year of the growing season with the use of retardants. The use of dextrel by this technology led to an increase in germination energy and germination of all seed fractions. Treatment of sugar beet plants with retardants in the budding phase led to a visible growth-inhibiting effect and slowing down plants' axial organs' growth. The most significant inhibition was observed in first-order flowering shoots, which contributed to forming a more compact bush. The drugs stimulated the growth of side shoots, which lagged in growth due to correlations while forming a more productive type of bush with more side shoots. The use of retardants on sugar beet in the budding phase led to an increase in plants' seed productivity in the planting method of cultivation. Under the influence of growth regulators, there was an increase in the mass of fruit of fractions of 4.5-5.5 mm and 3.5-4.5 mm. The applying of 0.05% paclobutrazol by this technology leads to improved germination energy and germination of all fractions' seeds.
Keywords: retardants; seed productivity; seed germination; sugar beet (Beta vulgaris L.)
Ajmi, A., Larbi, A., Morales, M. et al. (2020). Foliar Paclobutrazol Application Suppresses Olive Tree Growth While Promoting Fruit Set. J Plant Growth Regul, 39, 1638–1646.
Balagura, O.V. (2014). Diversity of sugar beet depending on the genotype and growing conditions. Sugar beets, 1, 10-11. (in Ukrainian).
Bonelli, L.E., Monzon, J. P., Cerrudo, A., Rizzalli, R.H., Andrade, F. H. (2016). Maize grain yield components and source–sink relationship as affected by the delay in sowing date. Field Crops Research, 198, 215–225. doi:10.1016/j.fcr.2016.09.003.
Cohen, I., Netzer, Y., Sthein, I. et al. (2019). Plant growth regulators improve drought tolerance, reduce growth and evapotranspiration in deficit irrigated Zoysia japonica under field conditions. Plant Growth Regul, 88, 9–17.
Chen, S., Wang, XJ., Tan, GF. et al. (2020). Gibberellin and the plant growth retardant Paclobutrazol altered fruit shape and ripening in tomato. Protoplasma, 257, 853–861.
Desta, B., Amare, G. (2021). Paclobutrazol as a plant growth regulator. Chem. Biol. Technol. Agric, 8, 1
Detpitthayanan, S., Romyanon, K., Songnuan, W. et al. (2019). Paclobutrazol Application Improves Grain 2AP Content of Thai Jasmine Rice KDML105 under Low-Salinity Conditions. J. Crop Sci. Biotechnol, 22, 275–282.
Dewi, K. & Darussalam. (2018). Effect of paclobutrazol and cytokinin on growth and source–sink relationship during grain filling of black rice (Oryza sativa L. "Cempo Ireng"). Ind J of Plant Physiol., 23(3), 507-515.
Dwivedi, S.K., Arora, A. & Kumar, S. (2017). Paclobutrazol-induced alleviation of water-deficit damage in relation to photosynthetic characteristics and expression of stress markers in contrasting wheat genotypes. Photosynthetica, 55, 351–359.
Ellis, G.D., Knowles, L.O. & Knowles, N.R. (2020). Increasing the Production Efficiency of Potato with Plant Growth Retardants. Am. J. Potato Res, 97, 88–101.
Fan, Z.X., Li, S.C. & Sun, H.L. (2020). Paclobutrazol Modulates Physiological and Hormonal Changes in Amorpha fruticosa under Drought Stress. Russ J Plant Physiol, 67, 122–130.
Forghani, A.H., Almodares, A. & Ehsanpour, A.A. (2020). The Role of Gibberellic Acid and Paclobutrazol on Oxidative Stress Responses Induced by In Vitro Salt Stress in Sweet Sorghum. Russ J Plant Physiol, 67, 555–563.
Forghani, A.H., Almodares, A. & Ehsanpour, A. (2018). Potential objectives for gibberellic acid and paclobutrazol under salt stress in sweet sorghum (Sorghum bicolor [L.] Moench cv. Sofra). Appl Biol Chem, 61, 113–124.
Hajihashemi, S. (2018). Physiological, biochemical, antioxidant and growth characterizations of gibberellin and paclobutrazol-treated sweet leaf (Stevia rebaudiana B.) herb. J. Plant Biochem. Biotechno, 27, 237–240.
Hajihashemi, S., Rajabpoor, S. & Djalovic, I. (2018). Antioxidant potential in Stevia rebaudiana callus in response to polyethylene glycol, paclobutrazol and gibberellin treatments. Physiol Mol Biol Plants, 24, 335–341.
Jiang, X., Wang, Y., Xie, H. et al. (2019). Environmental behavior of paclobutrazol in soil and its toxicity on potato and taro plants. Environ Sci Pollut Res, 26, 27385–27395.
Kamran, M., Ahmad, I., Wu, X. et al. (2018). Application of paclobutrazol: a strategy for inducing lodging resistance of wheat through mediation of plant height, stem physical strength, and lignin biosynthesis. Environ Sci Pollut Res, 25, 29366–29378.
Keramati, S., Pirdashti, H., Babaeizad, V. et al. (2016). Essential Oil Composition of Sweet Basil (Ocimum Basilicum L.) in Symbiotic Relationship with Piriformospora Indica and Paclobutrazol Application Under Salt Stress. BIOLOGIA FUTURA, 67, 412–423.
Keshavarz, H., Khodabin, G. (2019). The Role of Uniconazole in Improving Physiological and Biochemical Attributes of Bean (Phaseolus vulgaris L.) Subjected to Drought Stress. J. Crop Sci. Biotechnol, 22,161–168.
Khodanitska, O.O., Kuryata, V.G., Shevchuk,