| dc.contributor.author | Sanginga, N. |
| dc.contributor.author | Bowen, G.D. |
| dc.contributor.author | Danso, S.K.A. |
| dc.date.accessioned | 2019-12-04T11:34:36Z |
| dc.date.available | 2019-12-04T11:34:36Z |
| dc.date.issued | 1990 |
| dc.identifier.citation | Sanginga, N., Bowen, G.D. & Danso, S.K.A. (1990). Assessment of genetic variability for N 2 fixation between and within provenances of Leucaena leucocephala and Acacia albida estimated by 15 N labelling techniques. Plant and Soil, 127(2), 169-178. |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/6021 |
| dc.description.abstract | Nitrogen fixed in 13 provenances of Acacia albida and 11 isolines of Leucaena leucocephala inoculated with effective Rhizobium strains was measured by 15N techniques and the total N difference method. In the test soil, on the average, L. leucocephala derived about 65% of its total N from atmospheric N2 fixation compared to about 20% by A. albida. Significant differences in the percentage of N derived from atmospheric N2 (% Ndfa) occurred, between provenances or isolines within species. The % Ndfa ranged from 37 to 74% within L. leucocephala and from 6 to 37 within A. albida ; (equivalent to 20-50 mg N plant-1 and 4-37 mg N plant-1 for the two species over three months, respectively) and was correlated with the nodule mass (r = 0.91). The time course of N2 fixation of three selected provenances (low, intermediate and good fixers) was followed at 12 weekly intervals over a 36 week period. The % Ndfa of all provenances and isolines increased with time; and except for one of the L. leucocephala provenances, % Ndfa was similar within species at the 36 weeks harvest. There was a significant correlation between % Ndfa and the amount of N2 fixed (r = 0.96). Significant interactions occurred between provenances and N treatments and often growth of uninoculated but N fertilized plants was less variable than for inoculated unfertilized plants. |
| dc.language.iso | en |
| dc.subject | Genetic Variability |
| dc.subject | Leucaena Leucocephala |
| dc.subject | Nitrogen Fixation |
| dc.subject | Acacia Albida |
| dc.subject | Nodulation |
| dc.title | Assessment of genetic variability for N2 fixation between and with provenance of Leucaena leucocephala and Acacia albida estimated by 15N labelling techniques |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | International Atomic Energy Agency |
| cg.coverage.region | Acp |
| cg.coverage.region | Europe |
| cg.coverage.country | Austria |
| cg.authorship.types | CGIAR and advanced research institute |
| cg.iitasubject | Grain Legumes |
| cg.iitasubject | Genetic Improvement |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 105951 |
