Symbiogenetics and breeding of a macrosymbiont for increased nitrogen fixation capacity with special reference to the pea (Pisum sativum L.)

Advances in Host Plant and Rhizobium Genomics to Enhance Symbiotic Nitrogen Fixation in Grain Legumes

“…Advances in Host Plant and Rhizobium Genomics K74a and K76a outyielded Torsdag cultivar by 2-to 2.5-fold (Sidorova et al, 2011). The soybean cultivar "Nitrobean 60," which outyielded the check cultivar Bragg by 15% and contributed a high amount of fixed N 2 to the following cereal in crop rotation, was released in Australia (Bhatia et al, 2001).…”

“…It was released in the central region of the Russia (Borisov et al, 2008). More recently, Sidorova et al (2011) found dominant symbiotic pea mutants, which are characterized by their high grain yield and nitrogen fixation. They mapped the symbiotic genes on a Pisum chromosome.…”

“…They mapped the symbiotic genes on a Pisum chromosome. Using these symbiotic mutants with higher efficiency of nitrogen fixation in breeding program, Sidorova et al (2011) isolated a series of high-yielding lines, characterized by their high root biomass with increased nitrogen content that were superior to the pea cultivars in both nodulation and nitrogenase activity. Farmers are growing these lines and minimizing the use of organic and mineral fertilizers in Russia.…”