Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.)
Drought stress severely affects plant growth and development, causing significant yield loss in rice. This study demonstrates the relevance of water use efficiency with deeper rooting along with other root traits and gas exchange parameters. Forty-nine rice genotypes were evaluated in the basket met...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164071 |
| _version_ | 1855538638827290624 |
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| author | Gobu, Ramasamy Dash, Goutam Kumar Lal, Jai Prakash Swain, Padmini Mahender, Anumalla Anandan, Annamalai Ali, Jauhar |
| author_browse | Ali, Jauhar Anandan, Annamalai Dash, Goutam Kumar Gobu, Ramasamy Lal, Jai Prakash Mahender, Anumalla Swain, Padmini |
| author_facet | Gobu, Ramasamy Dash, Goutam Kumar Lal, Jai Prakash Swain, Padmini Mahender, Anumalla Anandan, Annamalai Ali, Jauhar |
| author_sort | Gobu, Ramasamy |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought stress severely affects plant growth and development, causing significant yield loss in rice. This study demonstrates the relevance of water use efficiency with deeper rooting along with other root traits and gas exchange parameters. Forty-nine rice genotypes were evaluated in the basket method to examine leaf-level water use efficiency (WUEi) variation and its relation to root traits. Significant variation in WUEi was observed (from 2.29 to 7.39 µmol CO2 mmol−1 H2O) under drought stress. Regression analysis revealed that high WUEi was associated with higher biomass accumulation, low transpiration rate, and deep rooting ratio. The ratio of deep rooting was also associated with low internal CO2 concentration. The association of deep rooting with lower root number and root dry weight suggests that an ideal drought-tolerant genotype with higher water use efficiency should have deeper rooting (>30% RDR) with moderate root number and root dry weight to be sustained under drought for a longer period. The study also revealed that, under drought stress conditions, landraces are more water-use efficient with superior root traits than improved genotypes. |
| format | Journal Article |
| id | CGSpace164071 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1640712025-12-08T10:29:22Z Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) Gobu, Ramasamy Dash, Goutam Kumar Lal, Jai Prakash Swain, Padmini Mahender, Anumalla Anandan, Annamalai Ali, Jauhar plant science ecology evolution behavior and systematics Drought stress severely affects plant growth and development, causing significant yield loss in rice. This study demonstrates the relevance of water use efficiency with deeper rooting along with other root traits and gas exchange parameters. Forty-nine rice genotypes were evaluated in the basket method to examine leaf-level water use efficiency (WUEi) variation and its relation to root traits. Significant variation in WUEi was observed (from 2.29 to 7.39 µmol CO2 mmol−1 H2O) under drought stress. Regression analysis revealed that high WUEi was associated with higher biomass accumulation, low transpiration rate, and deep rooting ratio. The ratio of deep rooting was also associated with low internal CO2 concentration. The association of deep rooting with lower root number and root dry weight suggests that an ideal drought-tolerant genotype with higher water use efficiency should have deeper rooting (>30% RDR) with moderate root number and root dry weight to be sustained under drought for a longer period. The study also revealed that, under drought stress conditions, landraces are more water-use efficient with superior root traits than improved genotypes. 2022-05-09 2024-12-19T12:53:24Z 2024-12-19T12:53:24Z Journal Article https://hdl.handle.net/10568/164071 en Open Access MDPI Gobu, Ramasamy; Dash, Goutam Kumar; Lal, Jai Prakash; Swain, Padmini; Mahender, Anumalla; Anandan, Annamalai and Ali, Jauhar. 2022. Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.). Plants, Volume 11 no. 9 p. 1270 |
| spellingShingle | plant science ecology evolution behavior and systematics Gobu, Ramasamy Dash, Goutam Kumar Lal, Jai Prakash Swain, Padmini Mahender, Anumalla Anandan, Annamalai Ali, Jauhar Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title | Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title_full | Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title_fullStr | Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title_full_unstemmed | Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title_short | Unlocking the nexus between leaf-level water use efficiency and root traits together with gas exchange measurements in rice (Oryza sativa L.) |
| title_sort | unlocking the nexus between leaf level water use efficiency and root traits together with gas exchange measurements in rice oryza sativa l |
| topic | plant science ecology evolution behavior and systematics |
| url | https://hdl.handle.net/10568/164071 |
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