Nitrogen fixation (acetylene reduction) and cross inoculation in 12 Prosopis (mesquite) species
- Cite this article as:
- Felker, P. & Clark, P.R. Plant Soil (1980) 57: 177. doi:10.1007/BF02211677
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The leguminous tree mesquite (Prosopis spp) exists on millions of hectares of semi-arid regions of the world. No whole plant acetylene reductions for mesquite have been reported in the literature and nodulation has only been reported for three of the forty-four species. We report greenhouse studies in which 12Prosopis species representing African and North and South American germplasm (1) became nodulated when inoculated with rhizobia strain isolated from a North American mesquite, (2) grew on a nitrogen free nutrient media, (3) reduced acetylene to ethylene, and (4) had a positive significant correlation between the acetylene reduction rates and above ground dry matter. The capability of mesquite to fix nitrogen must now be considered firmly established.