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Title: | Quantification of root associated nitrogen fixation in kallar grass as estimated by sup/15/nitrogen isotope dilution |
Authors: | Malik, Dr. Kauser .A. ; Zafar, Y. |
Keywords: | ARA atom excess Atom excess Azospirillium BNF Inoculation Isotopic dillution |
Issue Date: | 1985 |
Publisher: | IAEA |
Citation: | Malik, K.A., & Zafar, Y. Aleem, M.I.H. (Ed.). (1985). Quantification of root associated nitrogen fixation in kallar grass as estimated by sup/15/nitrogen isotope dilution. Pakistan: Nuclear Inst for Agriculture and Biology. |
Series/Report no.: | Malik, K.A., & Zafar, Y. Aleem, M.I.H. (Ed.). (1985). Quantification of root associated nitrogen fixation in kallar grass as estimated by sup/15/nitrogen isotope dilution. Pakistan: Nuclear Inst for Agriculture and Biology.; |
Abstract: | Present investigations were made by using sup/15/N isotope dilution technique to quantitatively estimate BNF in Kallar grass when grown under controlled conditions in nutrient solution and inoculated with N sub/2/-fixing bacteria. Azospirillum brasilense and two isolates from the rhizosphere of kallar grass were used as inoculant. After harvest acetylen reduction of roots, total yield, total N and sup/15/ N analysis were made. Total-N in inoculated treatments was 2-3 times higher than in control and so were the fresh and dry weight yields. The estimates based on isotopic dilution indicated that 50-70 percent N in the plant was derived from BNF in case of inoculated treatment. The results based on N balance gave relatively lower values of 40-60 percent of total N derived from fixation. The data revealed that in Kallar grass a substantial amount of plant N is derived from BNF. (orig./A.B.) |
Description: | https://inis.iaea.org/search/search.aspx?orig_q=RN:21070199 |
URI: | http://localhost:8080/xmlui/handle/123456789/1333 |
Appears in Collections: | School of Life Sciences |
Files in This Item:
File | Description | Size | Format | |
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Quantification of root associated nitrogen fixation in kallar g.pdf | 3.03 MB | Adobe PDF | View/Open |
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