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Breeding rice for a changing climate by improving adaptations to water saving technologies

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Title Breeding rice for a changing climate by improving adaptations to water saving technologies
 
Creator Heredia, Maria Cristina
Kant, Josefine
Prodhan, M. Asaduzzaman
Dixit, Shalabh
Wissuwa, Matthias
 
Subject rice
wet season
dry season
greenhouse gases
planting
 
Description Climate change is expected to increasingly affect rice production through rising temperatures and decreasing water availability. Unlike other crops, rice is a main contributor to greenhouse gas emissions due to methane emissions from flooded paddy fields. Climate change can therefore be addressed in two ways in rice: through making the crop more climate resilient and through changes in management practices that reduce methane emissions and thereby slow global warming. In this review, we focus on two water saving technologies that reduce the periods lowland rice will be grown under fully flooded conditions, thereby improving water use efficiency and reducing methane emissions. Rice breeding over the past decades has mostly focused on developing high-yielding varieties adapted to continuously flooded conditions where seedlings were raised in a nursery and transplanted into a puddled flooded soil. Shifting cultivation to direct-seeded rice or to introducing non-flooded periods as in alternate wetting and drying gives rise to new challenges which need to be addressed in rice breeding. New adaptive traits such as rapid uniform germination even under anaerobic conditions, seedling vigor, weed competitiveness, root plasticity, and moderate drought tolerance need to be bred into the current elite germplasm and to what extent this is being addressed through trait discovery, marker-assisted selection and population improvement are reviewed.
 
Date 2022-07-03
2023-01-18T20:17:41Z
2023-01-18T20:17:41Z
 
Type Journal Article
 
Identifier Heredia, M.C., Kant, J., Prodhan, M.A., Dixit, S. and Wissuwa, M. 2022. Breeding rice for a changing climate by improving adaptations to water saving technologies. Theoretical and Applied Genetics 135:17–33.
0040-5752
https://hdl.handle.net/10568/127468
https://doi.org/10.1007/s00122-021-03899-8
 
Language en
 
Rights Copyrighted; Non-commercial educational use only
Limited Access
 
Format 17-33
 
Source Theoretical and Applied Genetics