Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density
Direct selection for yield under drought has resulted in the release of a number of drought-tolerant rice varieties across Asia. In this study, we characterized the physiological traits that have been affected by this strategy in breeding trials across sites in Bangladesh, India, and Nepal. Drought-...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2021
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| Acceso en línea: | https://hdl.handle.net/10568/164296 |
| _version_ | 1855515198583996416 |
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| author | Kumar, Santosh Tripathi, Santosh Singh, Suresh Prasad Prasad, Archana Akter, Fahamida Syed, Md Abu Badri, Jyothi Das, Sankar Prasad Bhattarai, Rudra Natividad, Mignon A. Quintana, Marinell Venkateshwarlu, Challa Raman, Anitha Yadav, Shailesh Singh, Shravan K. Swain, Padmini Anandan, A. Yadaw, Ram Baran Mandal, Nimai P. Verulkar, S.B. Kumar, Arvind Henry, Amelia |
| author_browse | Akter, Fahamida Anandan, A. Badri, Jyothi Bhattarai, Rudra Das, Sankar Prasad Henry, Amelia Kumar, Arvind Kumar, Santosh Mandal, Nimai P. Natividad, Mignon A. Prasad, Archana Quintana, Marinell Raman, Anitha Singh, Shravan K. Singh, Suresh Prasad Swain, Padmini Syed, Md Abu Tripathi, Santosh Venkateshwarlu, Challa Verulkar, S.B. Yadav, Shailesh Yadaw, Ram Baran |
| author_facet | Kumar, Santosh Tripathi, Santosh Singh, Suresh Prasad Prasad, Archana Akter, Fahamida Syed, Md Abu Badri, Jyothi Das, Sankar Prasad Bhattarai, Rudra Natividad, Mignon A. Quintana, Marinell Venkateshwarlu, Challa Raman, Anitha Yadav, Shailesh Singh, Shravan K. Swain, Padmini Anandan, A. Yadaw, Ram Baran Mandal, Nimai P. Verulkar, S.B. Kumar, Arvind Henry, Amelia |
| author_sort | Kumar, Santosh |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Direct selection for yield under drought has resulted in the release of a number of drought-tolerant rice varieties across Asia. In this study, we characterized the physiological traits that have been affected by this strategy in breeding trials across sites in Bangladesh, India, and Nepal. Drought- breeding lines and drought-tolerant varieties showed consistently longer flag leaves and lower stomatal density than our drought-susceptible check variety, IR64. The influence of environmental parameters other than drought treatments on leaf traits was evidenced by close grouping of treatments within a site. Flag-leaf length and width appeared to be regulated by different environmental parameters. In separate trials in the Philippines, the same breeding lines studied in South Asia showed that canopy temperature under drought and harvest index across treatments were most correlated with grain yield. Both atmospheric and soil stress strengthened the relationships between leaf traits and yield. The stable expression of leaf traits among genotypes and the identification of the environmental conditions in which they contribute to yield, as well as the observation that some breeding lines showed longer time to flowering and higher canopy temperature than IR64, suggest that selection for additional physiological traits may result in further improvements of this breeding pool. |
| format | Journal Article |
| id | CGSpace164296 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1642962025-05-14T10:23:51Z Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density Kumar, Santosh Tripathi, Santosh Singh, Suresh Prasad Prasad, Archana Akter, Fahamida Syed, Md Abu Badri, Jyothi Das, Sankar Prasad Bhattarai, Rudra Natividad, Mignon A. Quintana, Marinell Venkateshwarlu, Challa Raman, Anitha Yadav, Shailesh Singh, Shravan K. Swain, Padmini Anandan, A. Yadaw, Ram Baran Mandal, Nimai P. Verulkar, S.B. Kumar, Arvind Henry, Amelia breeding drought flag leaf stomatal density vapor plant physiology plant science Direct selection for yield under drought has resulted in the release of a number of drought-tolerant rice varieties across Asia. In this study, we characterized the physiological traits that have been affected by this strategy in breeding trials across sites in Bangladesh, India, and Nepal. Drought- breeding lines and drought-tolerant varieties showed consistently longer flag leaves and lower stomatal density than our drought-susceptible check variety, IR64. The influence of environmental parameters other than drought treatments on leaf traits was evidenced by close grouping of treatments within a site. Flag-leaf length and width appeared to be regulated by different environmental parameters. In separate trials in the Philippines, the same breeding lines studied in South Asia showed that canopy temperature under drought and harvest index across treatments were most correlated with grain yield. Both atmospheric and soil stress strengthened the relationships between leaf traits and yield. The stable expression of leaf traits among genotypes and the identification of the environmental conditions in which they contribute to yield, as well as the observation that some breeding lines showed longer time to flowering and higher canopy temperature than IR64, suggest that selection for additional physiological traits may result in further improvements of this breeding pool. 2021-06-22 2024-12-19T12:53:43Z 2024-12-19T12:53:43Z Journal Article https://hdl.handle.net/10568/164296 en Open Access Oxford University Press Kumar, Santosh; Tripathi, Santosh; Singh, Suresh Prasad; Prasad, Archana; Akter, Fahamida; Syed, Md Abu; Badri, Jyothi; Das, Sankar Prasad; Bhattarai, Rudra; Natividad, Mignon A; Quintana, Marinell; Venkateshwarlu, Challa; Raman, Anitha; Yadav, Shailesh; Singh, Shravan K; Swain, Padmini; Anandan, A; Yadaw, Ram Baran; Mandal, Nimai P; Verulkar, S B; Kumar, Arvind and Henry, Amelia. 2021. Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density. Journal of Experimental Botany, Volume 72 no. 13 p. 4981-4992 |
| spellingShingle | breeding drought flag leaf stomatal density vapor plant physiology plant science Kumar, Santosh Tripathi, Santosh Singh, Suresh Prasad Prasad, Archana Akter, Fahamida Syed, Md Abu Badri, Jyothi Das, Sankar Prasad Bhattarai, Rudra Natividad, Mignon A. Quintana, Marinell Venkateshwarlu, Challa Raman, Anitha Yadav, Shailesh Singh, Shravan K. Swain, Padmini Anandan, A. Yadaw, Ram Baran Mandal, Nimai P. Verulkar, S.B. Kumar, Arvind Henry, Amelia Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title | Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title_full | Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title_fullStr | Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title_full_unstemmed | Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title_short | Rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| title_sort | rice breeding for yield under drought has selected for longer flag leaves and lower stomatal density |
| topic | breeding drought flag leaf stomatal density vapor plant physiology plant science |
| url | https://hdl.handle.net/10568/164296 |
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