Journal article
Drought response QTLs in a Super Basmati × Azucena population by high‐density GBS‐based SNP linkage mapping
Plant Breeding, Vol.140(5), pp.758-774
10/2021
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Abstract
Basmati rice is favoured for its grain type and aroma, but its production is vulnerable due to climate change and freshwater accessibility. Discovery and refinement of genomic regions conferring drought tolerance are needed to develop new drought tolerant Basmati varieties. Using Recombinant Inbred Lines (RILs) derived from a cross between drought-sensitive elite Basmati variety, ‘Super Basmati’, and drought-tolerant japonica cultivar, ‘Azucena’, a linkage map was constructed with 862 high-quality GBS-based SNP markers. Thirty-three QTLs were detected for yield-related and physiological traits. Of five QTL clusters, two were identified as novel on chromosome 7 and 11 for shoot dry weight and water uptake that could be designated as promising QTLs, and their candidate gene analysis suggested contributions to yield in the ‘Super Basmati’ background. Comparing the greenhouse and field results, this study suggests that selection of drought tolerance donor varieties must be matched with the target growth stage of drought tolerance needed. Along with fine mapping and functional marker selection, the QTL clusters identified can be further tested to contribute to Basmati rice improvement.
Details
- Title
- Drought response QTLs in a Super Basmati × Azucena population by high‐density GBS‐based SNP linkage mapping
- Creators
- Raheela Waheed - National Institute for Biotechnology and Genetic EngineeringJohn Carlos Ignacio - International Rice Research InstituteJuan David Arbelaez - International Rice Research Institute (Phillipines)Venice Margarette Juanillas - International Rice Research InstituteMuhammad Asif - National Institute for Biotechnology and Genetic EngineeringAmelia Henry - International Rice Research InstituteTobias Kretzschmar - International Rice Research Institute (Phillipines)Muhammad Arif - National Institute for Biotechnology and Genetic Engineering
- Publication Details
- Plant Breeding, Vol.140(5), pp.758-774
- Publisher
- Wiley-VCH Verlag GmbH & Co. KGaA
- Number of pages
- 17
- Grant note
- International Research Support Initiative Programme (IRSIP), Higher Education Commission (HEC), Pakistan
- Identifiers
- 991012968362202368
- Copyright
- © 2021 Wiley-VCH GmbH
- Academic Unit
- Faculty of Science and Engineering; School of Environment, Science and Engineering; Science; Southern Cross Plant Science
- Language
- English
- Resource Type
- Journal article