Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening
Phosphorus (P) is one of the major nutrients required by plants. A higher portion of P in lowland rice soils is found in unavailable forms due to fixation. Therefore, continuous application of P fertilizer to rice (<em>Oryza sativa </em>L.) is needed to obtain a satisfactory yield. Ident...
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| Format: | Article |
| Language: | English |
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Postgraduate Institute of Agriculture, University of Peradeniya
2019-11-01
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| Series: | Tropical Agricultural Research |
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| Online Access: | https://tar.sljol.info/articles/8318 |
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| author | D. S. Kekulandara P. C. G. Bandaranayake D. N. Sirisena W. L. G. Samarasinghe L. D. B. Suriyagoda |
| author_facet | D. S. Kekulandara P. C. G. Bandaranayake D. N. Sirisena W. L. G. Samarasinghe L. D. B. Suriyagoda |
| author_sort | D. S. Kekulandara |
| collection | DOAJ |
| description | Phosphorus (P) is one of the major nutrients required by plants. A higher portion of P in lowland rice soils is found in unavailable forms due to fixation. Therefore, continuous application of P fertilizer to rice (<em>Oryza sativa </em>L.) is needed to obtain a satisfactory yield. Identification and subsequent cultivation of high yielding rice varieties which can withstand low level of P is a better alternative to the continuous P application. The objective of this study was to categorize Sri Lankan rice varieties according to their response to P deficient conditions. Forty eight rice varieties including three old improved varieties and 45 new improved varieties were evaluated at deprived (10 μM P) and sufficient (50 μM P) P levels in a nutrient solution culture. Multiple plant traits; number of tillers, root and shoot dry weights and P content in shoot tissues were assessed at 52 days after planting. Rice variety Bg 94-1 gained higher biomass and P uptake (i.e. shoot P content- mg/plant). Simultaneously, At402 had lower biomass gain and shoot P content. Rice varieties were grouped into two distinct clusters based on their responses to P deficiency such as biomass gain, P uptake and number of tillers per plant. This study showed that At 405, Bg 94-1, At 307, Bg 304, Bg 300 and At 354 are promising rice varieties with higher response to low level of P supply. |
| first_indexed | 2024-12-14T05:17:50Z |
| format | Article |
| id | doaj.art-b0dfea3d68ee4340b126238100b046b1 |
| institution | Directory Open Access Journal |
| issn | 1016-1422 |
| language | English |
| last_indexed | 2024-12-14T05:17:50Z |
| publishDate | 2019-11-01 |
| publisher | Postgraduate Institute of Agriculture, University of Peradeniya |
| record_format | Article |
| series | Tropical Agricultural Research |
| spelling | doaj.art-b0dfea3d68ee4340b126238100b046b12022-12-21T23:15:46ZengPostgraduate Institute of Agriculture, University of PeradeniyaTropical Agricultural Research1016-14222019-11-01303435310.4038/tar.v30i3.83186218Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screeningD. S. Kekulandara0P. C. G. Bandaranayake1D. N. Sirisena2W. L. G. Samarasinghe3L. D. B. Suriyagoda4Rice Research & Development Institute, Batalagoda, IbbagamuwaUniversity of PeradeniyaRice Research & Development Institute, Batalagoda, IbbagamuwaPlant Genetic Resource Centre, PeradeniyaUniversity of PeradeniyaPhosphorus (P) is one of the major nutrients required by plants. A higher portion of P in lowland rice soils is found in unavailable forms due to fixation. Therefore, continuous application of P fertilizer to rice (<em>Oryza sativa </em>L.) is needed to obtain a satisfactory yield. Identification and subsequent cultivation of high yielding rice varieties which can withstand low level of P is a better alternative to the continuous P application. The objective of this study was to categorize Sri Lankan rice varieties according to their response to P deficient conditions. Forty eight rice varieties including three old improved varieties and 45 new improved varieties were evaluated at deprived (10 μM P) and sufficient (50 μM P) P levels in a nutrient solution culture. Multiple plant traits; number of tillers, root and shoot dry weights and P content in shoot tissues were assessed at 52 days after planting. Rice variety Bg 94-1 gained higher biomass and P uptake (i.e. shoot P content- mg/plant). Simultaneously, At402 had lower biomass gain and shoot P content. Rice varieties were grouped into two distinct clusters based on their responses to P deficiency such as biomass gain, P uptake and number of tillers per plant. This study showed that At 405, Bg 94-1, At 307, Bg 304, Bg 300 and At 354 are promising rice varieties with higher response to low level of P supply.https://tar.sljol.info/articles/8318deficiency, germplasm evaluation, phosphorus, screening, tolerance |
| spellingShingle | D. S. Kekulandara P. C. G. Bandaranayake D. N. Sirisena W. L. G. Samarasinghe L. D. B. Suriyagoda Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening Tropical Agricultural Research deficiency, germplasm evaluation, phosphorus, screening, tolerance |
| title | Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening |
| title_full | Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening |
| title_fullStr | Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening |
| title_full_unstemmed | Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening |
| title_short | Identification of phosphorus efficient rice cultivars under low P nutrition through hydroponic based screening |
| title_sort | identification of phosphorus efficient rice cultivars under low p nutrition through hydroponic based screening |
| topic | deficiency, germplasm evaluation, phosphorus, screening, tolerance |
| url | https://tar.sljol.info/articles/8318 |
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