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Published (Version of Record)CC BY V4.0, Open Access
Journal article
Discovery of major quantitative trait loci and candidate genes for fresh seed dormancy in groundnut
Agronomy, Vol.12(2), Article 404
2022
Abstract
Spanish bunch groundnut varieties occupy most of the cultivated area in Asia and Africa, and these varieties lack required 2-3 weeks of fresh seed dormancy (FSD) hampering kernel quality. Genomic breeding can help to improve commercial groundnut cultivars for FSD in a shorter time with greater precision. In this regard, a recombinant inbred line (RIL) population from the cross ICGV 02266 (non-dormant) × ICGV 97045 (dormant) was developed and genotyped with a 5 K mid-density genotyping assay. A linkage map was constructed with 325 SNP loci spanning a total map length of 2335.3 cM and five major QTLs were identified on chromosomes Ah01, Ah11, Ah06, Ah16 and Ah17. Based on differential gene expression using transcriptomic information from dormant (Tifrunner) and non-dormant (ICGV 91114) genotypes, histone deacetylases, histone-lysine N-methyltransferase, cytochrome P450, protein kinases, and ethylene-responsive transcription factor were identified as key regulators involved in the hormonal regulation of dormancy. Six Kompetitive Allele Specific PCR (KASP) markers were successfully validated in the diverse panel including selected RILs of the same population and germplasm lines. These validated KASP markers could facilitate faster breeding of new varieties with desired dormancy using marker-assisted early generation selection.
Details
- Title
- Discovery of major quantitative trait loci and candidate genes for fresh seed dormancy in groundnut
- Authors/Creators
- D. Bomireddy (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS.S. Gangurde (Author/Creator) - Agricultural Research ServiceM.T. Variath (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsP. Janila (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS.S. Manohar (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsV. Sharma (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsS. Parmar (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsD. Deshmukh (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsM. ReddiSekhar (Author/Creator) - Acharya N. G. Ranga Agricultural UniversityD.M. Reddy (Author/Creator) - Institute of Frontier Technology, RARS, ANGRAU, Tirupati 517502, IndiaP. Sudhakar (Author/Creator) - Acharya N. G. Ranga Agricultural UniversityB.V.B. Reddy (Author/Creator) - Institute of Frontier Technology, RARS, ANGRAU, Tirupati 517502, IndiaR.K. Varshney (Author/Creator) - International Crops Research Institute for the Semi-Arid TropicsB. Guo (Author/Creator) - University of GeorgiaM.K. Pandey (Author/Creator) - International Crops Research Institute for the Semi-Arid Tropics
- Publication Details
- Agronomy, Vol.12(2), Article 404
- Publisher
- MDPI
- Identifiers
- 991005546001907891
- Copyright
- © 2022 by the authors
- Murdoch Affiliation
- Food Futures Institute; 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
- Agronomy
- Plant Sciences
- ESI research areas
- Agricultural Sciences