Chemically synthesized cadmium sulphide (CdS) and copper oxide (CuO) nanoparticles (NPs) induced phenotypic mutation (types and frequency), meiotic chromosome behavior (mutants and controls) and mutagenic effectiveness and efficiency are described in Coriandrum sativum L. (Family: Apiaceae; spice and leaf vegetable yielding plant species of commerce) in comparison to the conventional mutagens namely, ethyl methanesulphonate (EMS) and gamma irradiations. The objective of the work is to highlight the mutagenic potentiality of CdS- and CuO-NPs. Result suggests that both NPs can induce 9 types of phenotypic mutants at M2 alike to that of EMS and gamma irradiations. Mutation frequency and mutagenic effectiveness and efficiency are found relatively higher in NPs than that of the conventional mutagens. Meiotic chromosome configurations (2n = 22) are nearly similar in both control and mutants. The mutants bred true at M3
