Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia
Drought is one of the most severe constraints reducing rice (Oryza sativa L.) yield in rainfed environments. ‘Sahbhagi Dhan’ (IR74371‐70‐1‐1) is a drought‐tolerant rice variety that was released in India in 2010—and subsequently in Nepal as ‘Sukha Dhan 3’ and in Bangladesh as ‘BRRI Dhan 56’—and has...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Wiley
2016
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| Online Access: | https://hdl.handle.net/10568/165324 |
| _version_ | 1855527790755971072 |
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| author | Anantha, M.S. Patel, Devraj Quintana, Marinell Swain, Padmini Dwivedi, Jawaharlal L. Torres, Rolando O. Verulkar, Satish B. Variar, Mukund Mandal, Nimai P. Kumar, Arvind Henry, Amelia |
| author_browse | Anantha, M.S. Dwivedi, Jawaharlal L. Henry, Amelia Kumar, Arvind Mandal, Nimai P. Patel, Devraj Quintana, Marinell Swain, Padmini Torres, Rolando O. Variar, Mukund Verulkar, Satish B. |
| author_facet | Anantha, M.S. Patel, Devraj Quintana, Marinell Swain, Padmini Dwivedi, Jawaharlal L. Torres, Rolando O. Verulkar, Satish B. Variar, Mukund Mandal, Nimai P. Kumar, Arvind Henry, Amelia |
| author_sort | Anantha, M.S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought is one of the most severe constraints reducing rice (Oryza sativa L.) yield in rainfed environments. ‘Sahbhagi Dhan’ (IR74371‐70‐1‐1) is a drought‐tolerant rice variety that was released in India in 2010—and subsequently in Nepal as ‘Sukha Dhan 3’ and in Bangladesh as ‘BRRI Dhan 56’—and has performed well in rainfed farmers’ fields. This study was conducted to understand the physiological drought response characteristics of Sahbhagi Dhan that contribute to its increased yield under drought. Physiological characterization of Sahbhagi Dhan and other newer breeding lines was conducted across multiple seasons at one site in the Philippines and at four sites in India. Several distinct traits of Sahbhagi Dhan were observed: high emergence rates under direct‐seeded germination‐stage stress, a high proportion of total root length as lateral roots in some seasons, high harvest index under drought, and high yield stability across wet seasons. However, some unfavorable responses of Sahbhagi Dhan were observed: impaired growth when sown during seasons with early‐stage cold temperatures or low solar radiation, resulting in relatively low yield stability across dry seasons. These results point to the importance of combining multiple traits for yield stability across drought‐prone environments. Some of the newly developed breeding lines showed even greater yield stability than Sahbhagi Dhan, reflecting the effectiveness of ongoing improvement through direct selection for grain yield under drought that has resulted in advantageous combinations of physiological traits to increase yield in farmers’ fields. |
| format | Journal Article |
| id | CGSpace165324 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1653242024-12-22T05:44:55Z Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia Anantha, M.S. Patel, Devraj Quintana, Marinell Swain, Padmini Dwivedi, Jawaharlal L. Torres, Rolando O. Verulkar, Satish B. Variar, Mukund Mandal, Nimai P. Kumar, Arvind Henry, Amelia breeding breeding methods drought drought tolerance physiological traits rice fields south asia varieties yield increases yields Drought is one of the most severe constraints reducing rice (Oryza sativa L.) yield in rainfed environments. ‘Sahbhagi Dhan’ (IR74371‐70‐1‐1) is a drought‐tolerant rice variety that was released in India in 2010—and subsequently in Nepal as ‘Sukha Dhan 3’ and in Bangladesh as ‘BRRI Dhan 56’—and has performed well in rainfed farmers’ fields. This study was conducted to understand the physiological drought response characteristics of Sahbhagi Dhan that contribute to its increased yield under drought. Physiological characterization of Sahbhagi Dhan and other newer breeding lines was conducted across multiple seasons at one site in the Philippines and at four sites in India. Several distinct traits of Sahbhagi Dhan were observed: high emergence rates under direct‐seeded germination‐stage stress, a high proportion of total root length as lateral roots in some seasons, high harvest index under drought, and high yield stability across wet seasons. However, some unfavorable responses of Sahbhagi Dhan were observed: impaired growth when sown during seasons with early‐stage cold temperatures or low solar radiation, resulting in relatively low yield stability across dry seasons. These results point to the importance of combining multiple traits for yield stability across drought‐prone environments. Some of the newly developed breeding lines showed even greater yield stability than Sahbhagi Dhan, reflecting the effectiveness of ongoing improvement through direct selection for grain yield under drought that has resulted in advantageous combinations of physiological traits to increase yield in farmers’ fields. 2016-01 2024-12-19T12:54:56Z 2024-12-19T12:54:56Z Journal Article https://hdl.handle.net/10568/165324 en Open Access Wiley Anantha, M.S.; Patel, Devraj; Quintana, Marinell; Swain, Padmini; Dwivedi, Jawaharlal L.; Torres, Rolando O.; Verulkar, Satish B.; Variar, Mukund; Mandal, Nimai P.; Kumar, Arvind and Henry, Amelia. 2016. Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia. Crop Science, Volume 56 no. 1 p. 408-421 |
| spellingShingle | breeding breeding methods drought drought tolerance physiological traits rice fields south asia varieties yield increases yields Anantha, M.S. Patel, Devraj Quintana, Marinell Swain, Padmini Dwivedi, Jawaharlal L. Torres, Rolando O. Verulkar, Satish B. Variar, Mukund Mandal, Nimai P. Kumar, Arvind Henry, Amelia Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title | Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title_full | Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title_fullStr | Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title_full_unstemmed | Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title_short | Trait combinations that improve rice yield under drought: Sahbhagi Dhan and new drought-tolerant varieties in South Asia |
| title_sort | trait combinations that improve rice yield under drought sahbhagi dhan and new drought tolerant varieties in south asia |
| topic | breeding breeding methods drought drought tolerance physiological traits rice fields south asia varieties yield increases yields |
| url | https://hdl.handle.net/10568/165324 |
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