Gautam, A and Thakur, A and Chauhan, C and Sharma, V and Sivakumar, K B and Kumar, Rakesh and Chetia, S K (2024) Rice Submergence Tolerance Emerging Molecular Breeding Strategies in the Post-Genomic Era. In: Plant Speed Breeding and High-Throughput Technologies. CRC Press, Boca Raton, pp. 318-342. ISBN 9781003434733
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Submergence is one of the key abiotic stresses that cause worldwide yield losses in cereal crops. Climate change scenarios have negatively affected plant development and growth, eventually causing plants to die if it continues for days. Rice, being a semi-aquatic plant, is significantly affected by floods, resulting in annual yield losses. In the last few decades, there have been large studies on the physiological and molecular aspects providing evidence of many traits associated with the submergence tolerance in rice. Genetic variation in plant present in response to submergence includes the quiescence approach, which enables underwater tolerance for up to a long period, and escape strategy with elongation of stem and changes in architecture and metabolism of plant. The discovery and deployment of submergence tolerance quantitative trait locus, namely SUB1 from the FR13A landrace was the most striking progress in rice (submergence). Recent studies identified a number of QTLs for plant survival and various related traits linked to submergence tolerance. All the identified QTLs contributed to improving the tolerance to submergence with their effects on underwater shoot elongation and chlorophyll level maintenance. These results lay the framework for emerging molecular breeding strategies for quickly incorporating submergence tolerance into elite cultivars with high precision. In future research, there is a need to deploy genomic approaches to exploring and identifying genomic regions associated with linked traits of interest via genome-wide association studies and QTL mapping. This could improve breeding systems that aim to significantly succeed in developing improved versions of crop varieties.
| Item Type: | Book Section |
|---|---|
| Divisions: | Global Research Program - Accelerated Crop Improvement |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | molecular breeding, rice, submergence tolerance |
| Subjects: | Others > Rice Others > Genetics and Genomics |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 10 Sep 2025 05:15 |
| Last Modified: | 10 Sep 2025 05:15 |
| URI: | http://oar.icrisat.org/id/eprint/13321 |
| Acknowledgement: | UNSPECIFIED |
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