Modeling of a biosensor based on electrical measurement of graft union in plants

Grafting is important, feasible and dominant over other means for getting good yields from the plants because it does not implicate soma clonal variation in the yields. The detection of graft compatibility at early stage is, therefore, important in agriculture and forestry production. The other reported methods for detection of graft compatibility in plants are time-consuming, require skilled labour along with repeated treatments and are not user friendly. The compatibility of graft union in plants has been found proportional to the drop of the electrical resistance appeared at the interface of the graft union. The drop of electrical resistance of graft union has been found the universal phenomenon for the successful grafts and can be taken as the analyte to trace the morphological changes in the cell of graft interface. Amodel of an electrical biosensor has been proposed in the present study to detect the compatibility of the graft union more efficiently in comparison to the techniques used by the other scientists because it is capable of detecting vertical motion of cells of the order of 1 nm, much below the resolution of an optical microscope.