caa a22 4500 477110649 CHVBK 20180405111607.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00035071 doi (NATIONALLICENCE)springer-10.1007/BF00035071 Diversity in symbiotic specificity of cowpea rhizobia indigenous to Zimbabwean soils [Elektronische Daten] [S. Mpepereki, A. Wollum II, F. Makonese] Tropical cowpea rhizobia are often presumed to be generally promiscuous but poor N fixers. This study was conducted to evaluate symbiotic interactions of 59 indigenous rhizobia isolates (49 of them from cowpea (Vigna unguiculata)), with up to 13 other (mostly tropical) legume species. Host ranges averaged 2.4 and 2.3 legume species each for fast- and slow-growing isolates respectively compared to 4.3 for slow-growing reference cowpea strains. An average of 22% and 19% of fast- and slow-growing cowpea isolates respectively were effective on each of 12 legume species tested. We conclude that the indigenous cowpea rhizobia studied have relatively narrow host ranges. The ready nodulation of different legumes in tropical soils appears due to the diversity of indigenous symbiotic genotypes, each consisting of subgroups compatible with a limited number of legume species. Kluwer Academic Publishers, 1996 cowpea rhizobia nationallicence diversity nationallicence host range nationallicence symbiotic specificity nationallicence Mpepereki S. Department of Soil Science and Agricultural Engineering, University of Zimbabwe, Mt Pleasant, PO Box MP 167, Harare, Zimbabwe aut Wollum II A. Department of Soil Science, North Carolina State University, Box 7619, 27695-7619, Raleigh, NC, USA aut Makonese F. Department of Soil Science and Agricultural Engineering, University of Zimbabwe, Mt Pleasant, PO Box MP 167, Harare, Zimbabwe aut Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 186/1(1996-09-01), 167-171 0032-079X 186:1<167 1996 186 11104 https://doi.org/10.1007/BF00035071 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00035071 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mpepereki S. Department of Soil Science and Agricultural Engineering, University of Zimbabwe, Mt Pleasant, PO Box MP 167, Harare, Zimbabwe aut NATIONALLICENCE 700 1- Wollum II A. Department of Soil Science, North Carolina State University, Box 7619, 27695-7619, Raleigh, NC, USA aut NATIONALLICENCE 700 1- Makonese F. Department of Soil Science and Agricultural Engineering, University of Zimbabwe, Mt Pleasant, PO Box MP 167, Harare, Zimbabwe aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl/ 186/1(1996-09-01), 167-171 0032-079X 186:1<167 1996 186 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer