ABSTRACT: Disclosed herein an intra-specific Fi-hybrid of Ricinus communis plant designated as INC-1 produced by crossing RCZ- P94 and RCZ-S128 and applying biparental crossing process adopting diallel mating design (half-diallel) at F2 generation following selection. The invention further discloses process for producing said hybrid of Ricinus communis for high seed yield and construction of molecular marker specific to hybrid TNC-1.