India being an agricultural country, more than 80% population of rural India depends on agriculture and its associated activities for their living. To satisfy the requirements of Indian population, there is need for adequate crop yield. But due to urbanisation, pollution, biotic and abiotic stresses, unavailability of micronutrients etc. there are various constraints on seed germination and crop yield. The present review highlights the problems associated with germination and growth of plants. It discusses on seed priming technology that can synchronise seed germination and improve vigour, leading to better crop establishment and yield. Seed priming stimulates the processes involved in metabolism which prevents seed deterioration, breaks dormancy and induces systemic resistance against biotic and abiotic stresses. It explains physiological and biochemical changes occurring in seeds on priming. Extensive study using different seed priming techniques viz. hydro-priming, halopriming, osmo-priming, matrix priming, osmohardening, on-farm priming, hormone priming, nutripriming, biopriming nanoparticle priming etc. has been carried out. Studying the use of different techniques and their need put an insight in the new research area of bionanoseed priming produced by amalgamating nanofertilisers and plant growth promoting rhizobacterias, to improve the productivity of crops.
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