Journal article
Genotyping-by-sequencing and multilocation evaluation of two interspecific backcross populations identify QTLs for yield-related traits in pigeonpea
Theoretical and Applied Genetics, Vol.133(3), pp.737-749
2020
Abstract
This study has identified single-nucleotide polymorphism (SNP) markers associated with nine yield-related traits in pigeonpea by using two backcross populations (BP) developed through interspecific crosses and evaluating them at two locations and 3 years. In both the populations, markers have shown strong segregation distortion; therefore, a quantitative trait locus (QTL) mapping mixed model was used. A total of 86 QTLs explaining 12–21% phenotypic variation were detected in BP-1. On the other hand, 107 QTLs explaining 11–29% phenotypic variation were detected in BP-2. Although most QTLs were environment and trait specific, few stable and consistent QTLs were also detected. Interestingly, 11 QTLs in BP-2 were associated with more than one trait. Among these QTLs, eight QTLs associated with days to 50% flowering and days to 75% maturity were located on CcLG07. One SNP “S7_14185076” marker in BP-2 population has been found associated with four traits, namely days to 50% flowering, days to 75% maturity, primary branches per plant and secondary branches per plant with positive additive effect. Hence, the present study has not only identified QTLs for yield-related traits, but also discovered novel alleles from wild species, which can be used for improvement of traits through genomics-assisted breeding.
Details
- Title
- Genotyping-by-sequencing and multilocation evaluation of two interspecific backcross populations identify QTLs for yield-related traits in pigeonpea
- Authors/Creators
- R.K. Saxena (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS. Kale (Author/Creator) - Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK)R.R. Mir (Author/Creator) - Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirN. Mallikarjuna (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Yadav (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR.R. Das (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsJ. Molla (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsM. Sonnappa (Author/Creator) - University of Agricultural Sciences RaichurA. Ghanta (Author/Creator) - Professor Jayashankar Telangana State Agricultural UniversityY. Narasimhan (Author/Creator) - Professor Jayashankar Telangana State Agricultural UniversityA. Rathore (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsC.V.S. Kumar (Author/Creator) - Professor Jayashankar Telangana State Agricultural UniversityR.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
- Publication Details
- Theoretical and Applied Genetics, Vol.133(3), pp.737-749
- Publisher
- Springer Verlag
- Identifiers
- 991005541568707891
- Copyright
- © 2021 Springer Nature Switzerland AG.
- 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
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences