Nodulation in peanut (Arachis hypogaea L.) roots in the presence of native and inoculated rhizobia strains

Castro, S. and Permigiani, M. and Vinocur, M. and Fabra, A. (1999) Nodulation in peanut (Arachis hypogaea L.) roots in the presence of native and inoculated rhizobia strains. Applied Soil Ecology, 13 (1). pp. 39-44.

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There is considerable interest in improving nitrogen fixation in legumes to increase soil fertility, particularly in the developing countries. The effect of inoculation of peanut (Arachis hypogaea L.) seed with Bradyrhizobium sp. USDA 3187 was examined under field conditions. In order to determine nodule occupancy, bacterial cells from surface-sterilized nodules of inoculated plants were isolated and characterized by their intrinsic antibiotic resistance and by agglutination test. Results obtained revealed that peanut roots were nodulated by native strain rather than the introduced one, indicating that strain USDA 3187 was not as competitive as naturalized peanut rhizobia. Data also showed that there were no significant differences in nodule dry weight, plant dry biomass, nitrogenase activity and seed yield between uninoculated and inoculated treatments.

Item Type: Article
Additional Information: Dr S N Nigam research collection - Box No:58
Uncontrolled Keywords: Arachis hypogaea L., Competition, Nitrogen ®xation, Nodulation, Rhizobia
Author Affiliation: Facultad de Ciencias Exactas Fı́sico-Quı́micas y Naturales. Universidad Nacional de Rı́o Cuarto. Agencia Postal No. 3, 5800, Rı́o Cuarto, Córdoba, Argentina
Subjects: Crop Improvement
Divisions: Groundnut
Depositing User: Mr Arbind Seth
Date Deposited: 29 Mar 2013 06:22
Last Modified: 29 Mar 2013 06:22
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