Ndiaye, M.A.F. and Spencer, M.M. and Gueye, M. (2000) Genetic variability in dinitrogen fixation between cowpea [Vigna unguiculata (L.) Walp] cultivars determined using the nitrogen-15 isotope dilution technique. Biology and Fertility of Soils, 32 (4). pp. 318-320.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to ICRISAT researchers only Request a copy |
Abstract
N fixed in 16 cultivars of cowpea [Vigna unguiculata (L.) Walp] inoculated with effective Bradyrhizobium strains collected from the West African MIRCEN culture collection was measured by 15N isotope dilution technique. In all plant parts, significant differences in the percentage of N derived from the atmosphere (%Ndfa) and the amount of Ndfa occurred between the cultivars. Ndoute variety exhibited the highest %Ndfa (74.33% in shoots; 60.90% in roots) and accumulated more fixed N (960 mg N plant–1 and 38 mg N plant–1 in shoots and roots, respectively). Therefore this cultivar should be selected as the highest N-fixing cowpea cultivar. It also should be used in a breeding programme to contribute to the development of cultivars that could stimulate an intensive use of cowpea in many different cropping systems in Africa with a view to maintaining soil fertility.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Genetic variability, Vigna unguiculata, Nitrogen-15 method, Nitrogen fixation |
| Author Affiliation: | Université Cheikh A. Diop, Faculté des Sciences et Techniques, Département Biologie Végétale BP 5005, Dakar, SénégalSN |
| Subjects: | Crop Improvement |
| Divisions: | General |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 24 Sep 2018 04:46 |
| Last Modified: | 24 Sep 2018 04:46 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/15596 |
Actions (login required)
 |
View Item |
