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Biopriming of seed, " An excellent alternative for chemical seed treatment"
barsha bastola

Last modified: 2017-08-21

Abstract


Bio-priming is the combination of seed hydration along with inoculation of bio-control agent. 12 hours pre-soaking of seed in water and mixing with effective bio-control agent not only protect seed from seed and soil borne pathogen but also improves physiological aspect of seed. This review focuses on microbes used in biopriming and also their role in stress tolerance with the use of this technology. Plant growth promoting rhizobacteria (PGPR) like Bacillus subtilis, Pseudomonas fluorescens, P. Chlororaphis and fungal antagonist like Trichoderma viride, T. harzianum help to improve seed germination, crop establishment and stress tolerance. Seed priming with these living bacterial and/or fungal inoculums is termed as biopriming that involves the application of PGPR and fungal antagonist. Seed biopriming allows the bacteria/fungus to enter/adhere the seeds, stimulates growth of plants through production of phytohormones and also check the colonization of pathogen. This technique for managing seed crop targeting against stresses has been considered as a novel tool, as it requires lesser amount of chemicals, reduces stresses, improves plant growth through induced systemic resistance and reduces the management cost. The potential microbes used in seed biopriming and methods being followed is also reviewed proposing biopriming as a promising technique for application of beneficial microbes to the seed.

Keywords: Bio-priming, antagonist, Bio-control, induced systemic resistance


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