Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka
Phosphorus (P) deficiency in soil is a major constrain for rice production. An important set of rice genotypes (landraces, old improved and new improved varieties) were screened for P deficiency tolerance in two major cropping seasons of Sri Lanka, in 2012. The Ultisol soil, which was collected from...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-07-01
|
| Series: | Rice Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1672630816300178 |
| _version_ | 1811310664715599872 |
|---|---|
| author | Y.C. Aluwihare M. Ishan M.D.M. Chamikara C.K. Weebadde D.N. Sirisena W.L.G. Samarasinghe S.D.S.S. Sooriyapathirana |
| author_facet | Y.C. Aluwihare M. Ishan M.D.M. Chamikara C.K. Weebadde D.N. Sirisena W.L.G. Samarasinghe S.D.S.S. Sooriyapathirana |
| author_sort | Y.C. Aluwihare |
| collection | DOAJ |
| description | Phosphorus (P) deficiency in soil is a major constrain for rice production. An important set of rice genotypes (landraces, old improved and new improved varieties) were screened for P deficiency tolerance in two major cropping seasons of Sri Lanka, in 2012. The Ultisol soil, which was collected from a plot cultivated with rice without fertilizer application for past 40 years (P0) at the Rice Research and Development Institute (RRDI), Bathalagoda, Sri Lanka, was used as the potting medium for greenhouse trials. Two field trials were conducted in the same plots at RRDI. Both P0 and P30 (30 mg/kg P2O5) conditions were used in the two greenhouse trials. At the early vegetative (three weeks after transplanting), late vegetative (six weeks after transplanting) and flowering stages, plant height and number of tillers per plant were recorded. At the flowering stage, shoots were harvested and shoot dry weight, shoot P concentration, shoot P uptake and P utilization efficiency were measured. All data were statistically analyzed using analysis of variance, regression and cluster procedures. The measured parameters were significantly different between P0 and P30 conditions (P < 0.05). Higher shoot dry weight was reported by the rice genotypes H4 and Marss under P0 conditions. The regression analysis between shoot dry weight and P utilization efficiency revealed that the studied rice genotypes could be categorized to three P deficiency tolerance classes. A total of 13 genotypes could be considered as highly tolerant and 4 genotypes as sensitive for P deficiency. These results could be used to select parental genotypes for breeding and genetic studies and also to select interesting varieties or landraces for organic rice production. |
| first_indexed | 2024-04-13T10:02:50Z |
| format | Article |
| id | doaj.art-485f03006cb94a21819dcab18b6625e7 |
| institution | Directory Open Access Journal |
| issn | 1672-6308 |
| language | English |
| last_indexed | 2024-04-13T10:02:50Z |
| publishDate | 2016-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Rice Science |
| spelling | doaj.art-485f03006cb94a21819dcab18b6625e72022-12-22T02:51:11ZengElsevierRice Science1672-63082016-07-0123418419510.1016/j.rsci.2015.10.001Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri LankaY.C. Aluwihare0M. Ishan1M.D.M. Chamikara2C.K. Weebadde3D.N. Sirisena4W.L.G. Samarasinghe5S.D.S.S. Sooriyapathirana6Department of Molecular Biology and Biotechnology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri LankaDepartment of Molecular Biology and Biotechnology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri LankaDepartment of Molecular Biology and Biotechnology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri LankaDepartments of Plant, Soil and Microbial Sciences and Horticulture, College of Agriculture and Natural Resources, Michigan State University, East Lansing, Michigan 48824, USARice Research and Development Institute, Bathalagoda, Ibbagamuwa 60500, Sri LankaRice Research and Development Institute, Bathalagoda, Ibbagamuwa 60500, Sri LankaDepartment of Molecular Biology and Biotechnology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri LankaPhosphorus (P) deficiency in soil is a major constrain for rice production. An important set of rice genotypes (landraces, old improved and new improved varieties) were screened for P deficiency tolerance in two major cropping seasons of Sri Lanka, in 2012. The Ultisol soil, which was collected from a plot cultivated with rice without fertilizer application for past 40 years (P0) at the Rice Research and Development Institute (RRDI), Bathalagoda, Sri Lanka, was used as the potting medium for greenhouse trials. Two field trials were conducted in the same plots at RRDI. Both P0 and P30 (30 mg/kg P2O5) conditions were used in the two greenhouse trials. At the early vegetative (three weeks after transplanting), late vegetative (six weeks after transplanting) and flowering stages, plant height and number of tillers per plant were recorded. At the flowering stage, shoots were harvested and shoot dry weight, shoot P concentration, shoot P uptake and P utilization efficiency were measured. All data were statistically analyzed using analysis of variance, regression and cluster procedures. The measured parameters were significantly different between P0 and P30 conditions (P < 0.05). Higher shoot dry weight was reported by the rice genotypes H4 and Marss under P0 conditions. The regression analysis between shoot dry weight and P utilization efficiency revealed that the studied rice genotypes could be categorized to three P deficiency tolerance classes. A total of 13 genotypes could be considered as highly tolerant and 4 genotypes as sensitive for P deficiency. These results could be used to select parental genotypes for breeding and genetic studies and also to select interesting varieties or landraces for organic rice production.http://www.sciencedirect.com/science/article/pii/S1672630816300178phosphorustolerancericegenotypephosphorus utilization efficiencylandrace |
| spellingShingle | Y.C. Aluwihare M. Ishan M.D.M. Chamikara C.K. Weebadde D.N. Sirisena W.L.G. Samarasinghe S.D.S.S. Sooriyapathirana Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka Rice Science phosphorus tolerance rice genotype phosphorus utilization efficiency landrace |
| title | Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka |
| title_full | Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka |
| title_fullStr | Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka |
| title_full_unstemmed | Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka |
| title_short | Characterization and Selection of Phosphorus Deficiency Tolerant Rice Genotypes in Sri Lanka |
| title_sort | characterization and selection of phosphorus deficiency tolerant rice genotypes in sri lanka |
| topic | phosphorus tolerance rice genotype phosphorus utilization efficiency landrace |
| url | http://www.sciencedirect.com/science/article/pii/S1672630816300178 |
| work_keys_str_mv | AT ycaluwihare characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT mishan characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT mdmchamikara characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT ckweebadde characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT dnsirisena characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT wlgsamarasinghe characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka AT sdsssooriyapathirana characterizationandselectionofphosphorusdeficiencytolerantricegenotypesinsrilanka |