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Improvement of seed bio-priming of oilseed rape (Brassica napus ssp. oleifera) with Serratia plymuthica and Pseudomonas chlororaphis

Seed bio-priming of oilseed rape (Brassica napus) with the antagonistic rhizobacteria Serratia plymuthica and Pseudomonas chlororaphis was improved. With the imbibition of water, bacteria are transported into the seed where they survive better. To obtain a minimum bacterial density in the seed of log10 5 colony-forming-units (CFUs) seed−1, the bacterial density in the bio-priming suspension should be >log10 9 CFUs mL–1 for S. plymuthica and >log10 8 CFUs mL–1 for P. chlororaphis. Priming duration was reduced from 12 to 2 h for S. plymuthica and 4 h for P. chlororaphis.

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