Journal article
Deciphering the genetic basis of root morphology, nutrient uptake, yield, and yield-related traits in rice under dry direct-seeded cultivation systems
Scientific Reports, Vol.9(1), Art. 9334
2019
Abstract
In the face of global water scarcity, a successful transition of rice cultivation from puddled to dry direct-seeded rice (DDSR) is a future need. A genome-wide association study was performed on a complex mapping population for 39 traits: 9 seedling-establishment traits, 14 root and nutrient-uptake traits, 5 plant morphological traits, 4 lodging resistance traits, and 7 yield and yield-contributing traits. A total of 10 significant marker-trait associations (MTAs) were found along with 25 QTLs associated with 25 traits. The percent phenotypic variance explained by SNPs ranged from 8% to 84%. Grain yield was found to be significantly and positively correlated with seedling-establishment traits, root morphological traits, nutrient uptake-related traits, and grain yield-contributing traits. The genomic colocation of different root morphological traits, nutrient uptake-related traits, and grain-yield-contributing traits further supports the role of root morphological traits in improving nutrient uptake and grain yield under DDSR. The QTLs/candidate genes underlying the significant MTAs were identified. The identified promising progenies carrying these QTLs may serve as potential donors to be exploited in genomics-assisted breeding programs for improving grain yield and adaptability under DDSR.
Details
- Title
- Deciphering the genetic basis of root morphology, nutrient uptake, yield, and yield-related traits in rice under dry direct-seeded cultivation systems
- Authors/Creators
- N. Sandhu (Author/Creator) - Punjab Agricultural UniversityS.R. Subedi (Author/Creator) - International Rice Research InstituteV.K. Singh (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Sinha (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS. Kumar (Author/Creator) - ICAR Research Complex for NEH RegionS.P. Singh (Author/Creator) - Bihar Agricultural UniversityS.K. Ghimire (Author/Creator) - Agriculture and Forestry UniversityM. Pandey (Author/Creator) - Agriculture and Forestry UniversityR.B. Yadaw (Author/Creator) - National Rice Research Program, Hardinath, Nepal.R.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsA. Kumar (Author/Creator) - International Rice Research Institute
- Publication Details
- Scientific Reports, Vol.9(1), Art. 9334
- Publisher
- Springer Nature
- Identifiers
- 991005541299207891
- Copyright
- © 2019 Springer Nature Limited
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science