Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia
Phosphorus is a key nutrient element involved in energy transfer for cellular metabolism, respiration and photosynthesis and its supply at low levels can affect legume nodulation, N<inf>2</inf> fixation, and C assimilation. A two-year field study was conducted in Ethiopia in 2012 and 201...
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| Format: | Article |
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Higher Education Press
2020-12-01
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| Series: | Frontiers of Agricultural Science and Engineering |
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| Online Access: | https://academic.hep.com.cn/fase/fileup/2095-7505/PDF/27610/1593481144270-514198997.pdf |
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| author | Sofiya K. MUHABA, Felix D. DAKORA |
| author_facet | Sofiya K. MUHABA, Felix D. DAKORA |
| author_sort | Sofiya K. MUHABA, Felix D. DAKORA |
| collection | DOAJ |
| description | Phosphorus is a key nutrient element involved in energy transfer for cellular metabolism, respiration and photosynthesis and its supply at low levels can affect legume nodulation, N<inf>2</inf> fixation, and C assimilation. A two-year field study was conducted in Ethiopia in 2012 and 2013 to evaluate the effects of P supply on growth, symbiotic N<inf>2</inf> nutrition, grain yield and water-use efficiency of three groundnut genotypes. Supplying P to the genotypes significantly increased their shoot biomass, symbiotic performance, grain yield, and C accumulation. There was, however, no effect on shoot δ<sup>13</sup>C values in either year. Compared to the zero-P control, supplying 40 kg·ha<sup>−</sup>1 P markedly increased shoot biomass by 77% and 66% in 2012 and 2013, respectively. In both years, groundnut grain yields were much higher at 20 and 30 kg·ha<sup>−</sup>1 P. Phosphorus supply markedly reduced shoot δ<sup>15</sup>N values and increased the %Ndfa and amount of N-fixed, indicating the direct involvement of P in promoting N<inf>2</inf> fixation in nodulated groundnut. The three genotypes differed significantly in δ<sup>15</sup>N, %Ndfa, N-fixed, grain yield, C concentration, and δ<sup>13</sup>C. The phosphorus × genotype interaction was also significant for shoot DM, N content, N-fixed and soil N uptake. |
| first_indexed | 2024-03-13T01:17:23Z |
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| institution | Directory Open Access Journal |
| issn | 2095-7505 |
| language | English |
| last_indexed | 2024-03-13T01:17:23Z |
| publishDate | 2020-12-01 |
| publisher | Higher Education Press |
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| series | Frontiers of Agricultural Science and Engineering |
| spelling | doaj.art-4b0abd8edb584ab38616960affb0611c2023-07-05T10:05:33ZengHigher Education PressFrontiers of Agricultural Science and Engineering2095-75052020-12-017445546610.15302/J-FASE-2020354Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in EthiopiaSofiya K. MUHABA, Felix D. DAKORA01. Department of Soil Fertility and Health Management, Debre Zeit Agricultural Research Center, Ethiopian Institute of Agricultural Research, PO Box 32, Debre Zeit, Ethiopia;2. Department of Crop Sciences, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa;3. Department of Chemistry, Tshwane University of Technology, Arcadia Campus, Private Bag X680, 175 Nelson Mandela Drive, Pretoria 0001, South AfricaPhosphorus is a key nutrient element involved in energy transfer for cellular metabolism, respiration and photosynthesis and its supply at low levels can affect legume nodulation, N<inf>2</inf> fixation, and C assimilation. A two-year field study was conducted in Ethiopia in 2012 and 2013 to evaluate the effects of P supply on growth, symbiotic N<inf>2</inf> nutrition, grain yield and water-use efficiency of three groundnut genotypes. Supplying P to the genotypes significantly increased their shoot biomass, symbiotic performance, grain yield, and C accumulation. There was, however, no effect on shoot δ<sup>13</sup>C values in either year. Compared to the zero-P control, supplying 40 kg·ha<sup>−</sup>1 P markedly increased shoot biomass by 77% and 66% in 2012 and 2013, respectively. In both years, groundnut grain yields were much higher at 20 and 30 kg·ha<sup>−</sup>1 P. Phosphorus supply markedly reduced shoot δ<sup>15</sup>N values and increased the %Ndfa and amount of N-fixed, indicating the direct involvement of P in promoting N<inf>2</inf> fixation in nodulated groundnut. The three genotypes differed significantly in δ<sup>15</sup>N, %Ndfa, N-fixed, grain yield, C concentration, and δ<sup>13</sup>C. The phosphorus × genotype interaction was also significant for shoot DM, N content, N-fixed and soil N uptake.https://academic.hep.com.cn/fase/fileup/2095-7505/PDF/27610/1593481144270-514198997.pdfshoot yield|n-fixed|%ndfa|δ<sup>15</sup>n|δ<sup>13</sup>c|water-use efficiency |
| spellingShingle | Sofiya K. MUHABA, Felix D. DAKORA Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia Frontiers of Agricultural Science and Engineering shoot yield|n-fixed|%ndfa|δ<sup>15</sup>n|δ<sup>13</sup>c|water-use efficiency |
| title | Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia |
| title_full | Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia |
| title_fullStr | Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia |
| title_full_unstemmed | Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia |
| title_short | Symbiotic performance, shoot biomass and water-use efficiency of three groundnut (Arachis hypogaea L.) genotypes in response to phosphorus supply under field conditions in Ethiopia |
| title_sort | symbiotic performance shoot biomass and water use efficiency of three groundnut arachis hypogaea l genotypes in response to phosphorus supply under field conditions in ethiopia |
| topic | shoot yield|n-fixed|%ndfa|δ<sup>15</sup>n|δ<sup>13</sup>c|water-use efficiency |
| url | https://academic.hep.com.cn/fase/fileup/2095-7505/PDF/27610/1593481144270-514198997.pdf |
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