Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency
Low phosphorus (P) in agricultural ecosystems limits growth of bambara. Field trials were carried out at 2 P levels (0 and 35 kg/ha) to determine the variation of 12 bambara genotypes in phosphorus efficiency, identify P-efficient and responsive genotypes for cultivation in sub-optimal P environment...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-01-01
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| Series: | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/09064710.2020.1850852 |
| _version_ | 1797684312466784256 |
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| author | Job Sikuku Wafula Benson Ouma Nyongesa Beatrice A. Were Samuel Gudu |
| author_facet | Job Sikuku Wafula Benson Ouma Nyongesa Beatrice A. Were Samuel Gudu |
| author_sort | Job Sikuku Wafula |
| collection | DOAJ |
| description | Low phosphorus (P) in agricultural ecosystems limits growth of bambara. Field trials were carried out at 2 P levels (0 and 35 kg/ha) to determine the variation of 12 bambara genotypes in phosphorus efficiency, identify P-efficient and responsive genotypes for cultivation in sub-optimal P environments. Genotypes differed significantly (P ≤ .05) in plant biomass, grain and biological yields due to P levels and seasonal effects. BAM002, BAM010 and BAM011 recorded high grain yields in both seasons. Phosphorus accumulation (PA) in biomass, grain and biological yields was influenced by genotype, P levels and genotype * P levels interaction. High yielding P-efficient and responsive genotypes including BAM002, BAM010 and BAM011 also had high values of phosphorus physiological efficiency index and phosphorus harvest index at low P indicating that they are P-efficient. Genotypes were classified into four and three groups based on the relationship between total PA and grain yield at low and adequate P, respectively. Moreover, genotypes were categorised into in-efficient, medium and efficient based on total index score. Principal component analysis grouped together the genotypes BAM002, BAM010 and BAM011 at both P levels. These genotypes are adapted to P-deficient soils and utilise acquired P efficiently for optimum grain production. |
| first_indexed | 2024-03-12T00:28:50Z |
| format | Article |
| id | doaj.art-0e3af823e51f4b5791efbe8bbf17536e |
| institution | Directory Open Access Journal |
| issn | 0906-4710 1651-1913 |
| language | English |
| last_indexed | 2024-03-12T00:28:50Z |
| publishDate | 2021-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| spelling | doaj.art-0e3af823e51f4b5791efbe8bbf17536e2023-09-15T10:26:26ZengTaylor & Francis GroupActa Agriculturae Scandinavica. Section B, Soil and Plant Science0906-47101651-19132021-01-01711688010.1080/09064710.2020.18508521850852Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiencyJob Sikuku Wafula0Benson Ouma Nyongesa1Beatrice A. Were2Samuel Gudu3University of EldoretUniversity of EldoretUniversity of EldoretRongo UniversityLow phosphorus (P) in agricultural ecosystems limits growth of bambara. Field trials were carried out at 2 P levels (0 and 35 kg/ha) to determine the variation of 12 bambara genotypes in phosphorus efficiency, identify P-efficient and responsive genotypes for cultivation in sub-optimal P environments. Genotypes differed significantly (P ≤ .05) in plant biomass, grain and biological yields due to P levels and seasonal effects. BAM002, BAM010 and BAM011 recorded high grain yields in both seasons. Phosphorus accumulation (PA) in biomass, grain and biological yields was influenced by genotype, P levels and genotype * P levels interaction. High yielding P-efficient and responsive genotypes including BAM002, BAM010 and BAM011 also had high values of phosphorus physiological efficiency index and phosphorus harvest index at low P indicating that they are P-efficient. Genotypes were classified into four and three groups based on the relationship between total PA and grain yield at low and adequate P, respectively. Moreover, genotypes were categorised into in-efficient, medium and efficient based on total index score. Principal component analysis grouped together the genotypes BAM002, BAM010 and BAM011 at both P levels. These genotypes are adapted to P-deficient soils and utilise acquired P efficiently for optimum grain production.http://dx.doi.org/10.1080/09064710.2020.1850852bambarabreedingphosphorusphosphorus efficiencysustainable agriculture |
| spellingShingle | Job Sikuku Wafula Benson Ouma Nyongesa Beatrice A. Were Samuel Gudu Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency Acta Agriculturae Scandinavica. Section B, Soil and Plant Science bambara breeding phosphorus phosphorus efficiency sustainable agriculture |
| title | Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency |
| title_full | Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency |
| title_fullStr | Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency |
| title_full_unstemmed | Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency |
| title_short | Genotypic variation of bambara groundnut (Vigna subterranea L.Verdc) for phosphorus efficiency |
| title_sort | genotypic variation of bambara groundnut vigna subterranea l verdc for phosphorus efficiency |
| topic | bambara breeding phosphorus phosphorus efficiency sustainable agriculture |
| url | http://dx.doi.org/10.1080/09064710.2020.1850852 |
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