Enlarging bulblet by magnetic and chelating structures of nano-chitosan as supplementary fertilizer in Lilium

Abstract

The nutrition is the effective component on the increasing size of the bulb in growth period. In this work, carboxymethyl chitosan and magnetic nano-chitosan in a size ≤ 20 nm were synthesized that can be taken up by plant roots. The purpose of this work was to evaluate carboxymethyl chitosan and magnetic nano-chitosan with chelating structures as supplementary fertilizers to increase yearling bulblet growth in Lilium. The application of magnetic nano-chitosan at a concentration of 15 mg·L-1 as compared to its lower concentrations, carboxymethyl chitosan and iron sulphate had better effect on the promoting the growth, development and protecting the shoot, and growth of bulblet. Higher growth and development of shoots and roots by high concentration of magnetic nano-chitosan could affect the enlarging bulblet. There was a positive magnetic effect on the enzyme structures and supplying the essential iron for plant. Furthermore, magnetic nano-chitosan can act as a chelating component to facilitate the uptake of elements.