Fig. 2From: Promoting plant growth in a commercial rice cultivar by endophytic diazotrophic bacteria isolated from rice landracesNitrogenase activity of diazotrophic bacteria under free-living (■, n mol C2H4 h−1 mg protein−1) and symbiotic [, n mol C2H4 h−1 g (dry weight)−1] conditions, tested on the commercial rice cultivar Khao Dawk Mali 105 using an acetylene reduction assay. Each bar represents a means ± SD of five replicatesBack to article page