Publications des scientifiques de l'IRD

Lazali M., Brahimi S., Merabet C., Latati M., Benadis C., Maougal R. T., Blavet Didier, Drevon J. J., Ounane S. M. (2016). Nodular diagnosis of contrasting recombinant inbred lines of Phaseolus vulgaris in multi-local field tests under Mediterranean climate. European Journal of Soil Biology, 73, p. 100-107. ISSN 1164-5563.

Titre du document
Nodular diagnosis of contrasting recombinant inbred lines of Phaseolus vulgaris in multi-local field tests under Mediterranean climate
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000373549800012
Auteurs
Lazali M., Brahimi S., Merabet C., Latati M., Benadis C., Maougal R. T., Blavet Didier, Drevon J. J., Ounane S. M.
Source
European Journal of Soil Biology, 2016, 73, p. 100-107 ISSN 1164-5563
Common bean (Phaseolus vulgaris L.) has the capacity to fix atmospheric N-2 into the biosphere through its aptitude to establish a symbiosis with soil rhizobia. In order to search for environmental constraints that might limit this symbiosis a nodular diagnosis was performed in eighteen field sites chosen with farmers of the Setif agro-ecosystem. Common bean was used as a model grain-legume with six recombinant inbred lines (RILs) and one local genotype Djadida. At flowering stage, the biomass of plants and nodules was determined by excavating 20 cm in depth and around the root-system of ten plants per genotype and per site. The results indicate a large spatial variation in nodulation and growth between genotypes, and the distribution of soils in four soil clusters, based on physico-chemical properties. The inhibition of nodulation of all genotypes in soil of clusters A and B was associated with high residual soil mineral nitrogen (2.23 +/- 0.49 g kg(-1) soil). The low nodulation of all genotypes in the phosphorus (P) deficient soil of cluster C (6.73 +/- 3.63 mg kg(-1) soil) was partly compensated by increasing their efficiency in use of the rhizobial symbiosis (13%), estimated by the slope of the regression model of shoot biomass as a function of nodule biomass. Interestingly, significant correlations were found between nodulation of all genotypes and Olsen-P content in soils of clusters C (R-2 = 0.97, P < 0.001) and D (R-2 = 0.94, P < 0.05). It is concluded that the RILs selected for their efficient use of P for symbiotic nitrogen fixation show the highest nodulation and growth and that the nodular diagnosis can be used to assess the growth response of N-2-dependent grain-legume to soils with low availabilities of N and P.
Plan de classement
Pédologie [068] ; Biotechnologies [084]
Description Géographique
ALGERIE ; ZONE MEDITERANEENNE ; ZONE SEMIARIDE
Localisation
Fonds IRD [F B010066765]
Identifiant IRD
fdi:010066765
Contact