| dc.contributor.author | Sanginga, N. |
| dc.contributor.author | Bowen, G.D. |
| dc.contributor.author | Danso, S.K.A. |
| dc.date.accessioned | 2019-12-04T11:34:10Z |
| dc.date.available | 2019-12-04T11:34:10Z |
| dc.date.issued | 1991 |
| dc.identifier.citation | Sanginga, N., Bowen, G.D. & Danso, S.K.A. (1991). Intra-specific variation in growth and P accumulation of Leucaena leucocephala and Gliricidia sepium as influenced by soil phosphate status. Plant and Soil, 133, 201-208. |
| dc.identifier.issn | 0032-079X |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/5911 |
| dc.description.abstract | Twenty-three provenances of Gliricidia sepium and eleven isolines of Leucaena leucocephala were examined at a low and at high phosphate levels (20 and 80 mg P kg-1 soil) for growth, phosphate (P) uptake and use efficiency. Large differences in growth at the low P level, and in growth response to the higher P rate occurred among L. leucocephala isolines and G. sepium provenances. Shoot dry weight atlow P varied from 1.30 to 3.01 g plant-1 for L. leucocephala and from 1.44 to 3.07 g plant-1 for G Sepium. Leucaena isolines had only half the root weight of G. sepium provenances yet produced approximately 90% of the shoot weight of the corresponding G. sepium treatments, i.e. more than 2-fold difference in root/shoot ratios. Total P in shoots of G. sepium was some 85% greater than of the respective L. leucocephala isolines in corresponding treatments. Physiological phosphate use efficiency (g shoot/mg P in shoots) (PPUE) was not a simple reciprocal relation, being markedly lower at higher shoot % P and content. However, for the same shoot P both species produced the same shoot weight. Nevertheless, there were apparent genotypic differences within species in the root development, shoot P and PPUE In another study, the numbers of rhizobia in the rhizosphere of L. leucocephala nodulation, N2 fixation at five different levels of P were determined. The numbers of rhizobia in the rhizosphere of inoculated L. leucocephala during the first two weeks were lower when P was added but later became similar to those without added P. Nodules formed earlier than inoculated plants fertilized with P and in greater numbers (4- to 5-fold) and dry weights than in those without P. However, the percentage of N2 derived from fixation did not change with increasing levels of P application. These results suggest that the observed P effect did not operate via stimulated growth of rhizobia in the rhizosphere, nor through increased N2 fixation rate. The major effect appeared to be due to effects via plant growth |
| dc.language.iso | en |
| dc.subject | Rhizobiaceae |
| dc.subject | Rhizosphere |
| dc.subject | Plants |
| dc.subject | Growth |
| dc.title | Intraspecific variation in growth and P accumulation of Leucaena leucocephala and Gliricidia sepium as influenced by soil phosphate status |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | International Atomic Energy Agency |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.country | Nigeria |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and advanced research institute |
| cg.iitasubject | Plant Health |
| cg.iitasubject | Plant Production |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 105841 |
