Open AccessCompetitive interaction between non‐nodulating and nodulating strains for nodulation of cowpea ( Vigna unguiculata )
Author(s) -
Singh Inderpal,
Ahmad M.H.
Publication year - 1991
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1991.tb04739.x
Subject(s) - vigna , rhizobia , bradyrhizobium , biology , strain (injury) , rhizobium , symbiosis , rhizobiaceae , inoculation , mutant , bradyrhizobium japonicum , botany , horticulture , bacteria , gene , biochemistry , genetics , anatomy
We have examined the effect of a non‐nodulating mutant (JRW3‐Sm D ) on the nodulation ability of cowpea rhizobia ( Bradyrhizobium sp.) strains JRW3 and IRC256. Nodulation of cowpea ( Vigna unguiculata ) by a nodulating Rhizobium strain is suppressed by the presence of a non‐nodulating mutant. The msgnitude of suppression for nodule formation by nodulating strains varied between 40% and 80% depending on the strain and the time of inoculation.