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Journal article
Seed protein content and its relationships with agronomic traits in pigeonpea is controlled by both main and epistatic effects QTLs
Scientific Reports, Vol.10(1), 214
2020
Abstract
The genetic architecture of seed protein content (SPC) and its relationships to agronomic traits in pigeonpea is poorly understood. Accordingly, five F2 populations segregating for SPC and four agronomic traits (seed weight (SW), seed yield (SY), growth habit (GH) and days to first flowering (DFF)) were phenotyped and genotyped using genotyping-by-sequencing approach. Five high-density population-specific genetic maps were constructed with an average inter-marker distance of 1.6 to 3.5 cM, and subsequently, integrated into a consensus map with average marker spacing of 1.6 cM. Based on analysis of phenotyping data and genotyping data, 192 main effect QTLs (M-QTLs) with phenotypic variation explained (PVE) of 0.7 to 91.3% were detected for the five traits across the five populations. Major effect (PVE ≥ 10%) M-QTLs included 14 M-QTLs for SPC, 16 M-QTLs for SW, 17 M-QTLs for SY, 19 M-QTLs for GH and 24 M-QTLs for DFF. Also, 573 epistatic QTLs (E-QTLs) were detected with PVE ranging from 6.3 to 99.4% across traits and populations. Colocalization of M-QTLs and E-QTLs explained the genetic basis of the significant (P < 0.05) correlations of SPC with SW, SY, DFF and GH. The nature of genetic architecture of SPC and its relationship with agronomic traits suggest that genomics-assisted breeding targeting genome-wide variations would be effective for the simultaneous improvement of SPC and other important traits.
Details
- Title
- Seed protein content and its relationships with agronomic traits in pigeonpea is controlled by both main and epistatic effects QTLs
- Authors/Creators
- J. Obala (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsR.K. Saxena (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsV.K. Singh (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS.M. Kale (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsV. Garg (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsC.V.S. Kumar (Author/Creator) - Professor Jayashankar Telangana State Agricultural UniversityK.B. Saxena (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Tongoona (Author/Creator) - University of KwaZulu-NatalJ. Sibiya (Author/Creator) - University of KwaZulu-NatalR.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
- Publication Details
- Scientific Reports, Vol.10(1), 214
- Publisher
- Springer Nature
- Identifiers
- 991005542201507891
- Copyright
- © 2020 The Authors.
- Murdoch Affiliation
- Centre for Crop and Food Innovation; Murdoch University; State Agricultural Biotechnology Centre
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
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- 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