Abstract
Novel plant growth regulators (PGRs) based on the derivatives of dehydroamino acids 2,3-dehydroaspartic acid dimethyl ester (PGR1), Z-isomer of the potassium salt of 2-amino-3-methoxycarbonylacrylic acid (PGR2) and 1-methyl-3-methylamino-maleimide (PGR3) have been synthesized and their growth-regulating properties investigated. Laboratory testing revealed their plant growth-regulating activity. PGR1 showing the most stimulating activity on all laboratory tested cultures were used in field experiments. Results showed that PGR1 is a highly effective environmentally friendly plant growth regulator with effects on different crops. Biopolymeric microcapsule formulations (chitosan/alginate microcapsule loaded with PGR) suitable for application in agriculture were prepared and characterized. Physicochemical properties and release profiles of PGRs from microcapsule formulations depend on the molecular interactions between microcapsule constituents including mainly electrostatic interactions and hydrogen bonds. The differences in the microcapsule formulations structure did not affect the mechanism of PGRs release which was identified as diffusion through microcapsules. The obtained results opened a perspective for the future use of microcapsule formulations as new promising agroformulations with a sustained and target release for plant growth regulation.
Highlights
This paper describes the synthesis and testing of the new compounds on maize, barley, wheat, and potatoes, as well as preparation and characterization of chitosan/alginate microcapsules loaded with plant growth regulators (PGRs) (CS/(ALG/(Ca+PGR))
Plant growth regulators are molecules widely applied in agriculture to control plant growth and development
We have synthesized new plant growth regulators based on the derivatives of dehydroamino acids (2,3-dehydroaspartic acid dimethyl ester (PGR1), Z-isomer potassium salt of 2-amino-3-methoxycarbonyl acrylic acid (PGR2) or 1-methyl-3-ethylamino imine of maleic acid (PGR3))
Summary
The plant cells contain substances that are of great importance for the growth, development and functional activity of the whole organism. They are phytohormones—low molecular weight organic substances of endogenous origin. They are present in tissues in small quantities and with their help, the interaction of cells, tissues and organs is carried out. Phytohormones are required to start, regulate, turn on or turn off morphogenetic and physiological programs [1]. Phytohormones occur at low concentrations in plants and much research is focused on the preparation of synthetic hormonal products (plant growth regulators (PGRs)) suitable to affect plant growth and development in agricultural practice
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
