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The ability to improve the germination performance of aged or dormant seeds is significant in agriculture. Seed nanopriming is one potentially effective strategy. The method of synthesising nanoparticles (NPs) is generally chemical reduction. However, most of the reducing agents are highly toxic chemicals. Plant substitutes can replace such toxic reductants because of their environmental friendliness and hence green synthesis of NPs has arisen as an emerging technology. The technology of seed priming with green synthetic NPs is called green nanopriming. This review introduces the concept of nanopriming, which has attracted research interest in recent years due to advances in nanotechnology. The basis of green nanopriming, the method for green synthesis of NPs, conditions of green nanopriming (temperature; concentration of NPs; length of priming; nature of NPs) are elaborated. Further, the effects on seeds and the growth of seedlings are also summarised. This technology can promote germination of seeds effectively without poisoning seedlings. Therefore, green nanopriming has huge potential for enhancing crop productivity.
Song et al. (Fri,) studied this question.