Journal article
Genotyping-by-sequencing based genetic mapping reveals large number of epistatic interactions for stem rot resistance in groundnut
Theoretical and Applied Genetics, Vol.132(4), pp.1001-1016
2019
Abstract
Groundnut (Arachis hypogaea) is an important global crop commodity and serves as a major source of cooking oil, diverse confectionery preparations and livestock feed. Stem rot disease caused by Sclerotium rolfsii is the most devastating disease of groundnut and can cause up to 100% yield loss. Genomic-assisted breeding (GAB) has potential for accelerated development of stem rot resistance varieties in short period with more precision. In this context, linkage analysis and quantitative trait locus (QTL) mapping for resistance to stem rot disease was performed in a bi-parental recombinant inbred line population developed from TG37A (susceptible) × NRCG-CS85 (resistant) comprising of 270 individuals. Genotyping-by-sequencing approach was deployed to generate single nucleotide polymorphism (SNP) genotyping data leading to development of a genetic map with 585 SNP loci spanning map distance of 2430 cM. QTL analysis using multi-season phenotyping and genotyping data could not detect any major main-effect QTL but identified 44 major epistatic QTLs with phenotypic variation explained ranging from 14.32 to 67.95%. Large number interactions indicate the complexity of genetic architecture of resistance to stem rot disease. A QTL of physical map length 5.2 Mb identified on B04 comprising 170 different genes especially leucine reach repeats, zinc finger motifs and ethyleneresponsive factors, etc., was identified. The identified genomic regions and candidate genes will further validate and facilitate marker development to deploy GAB for developing stem rot disease resistance groundnut varieties.
Details
- Title
- Genotyping-by-sequencing based genetic mapping reveals large number of epistatic interactions for stem rot resistance in groundnut
- Authors/Creators
- S.M. Dodia (Author/Creator)B. Joshi (Author/Creator)S.S. Gangurde (Author/Creator)P.P. Thirumalaisamy (Author/Creator)G.P. Mishra (Author/Creator)D. Narandrakumar (Author/Creator)P. Soni (Author/Creator)A.L. Rathnakumar (Author/Creator)J.R. Dobaria (Author/Creator)C. Sangh (Author/Creator)A. Chitikineni (Author/Creator)S.V. Chanda (Author/Creator)M.K. Pandey (Author/Creator)R.K. Varshney (Author/Creator)R. Thankappan (Author/Creator)
- Publication Details
- Theoretical and Applied Genetics, Vol.132(4), pp.1001-1016
- Publisher
- Springer Verlag
- Identifiers
- 991005540714907891
- Copyright
- © 2021 Springer Nature Switzerland AG.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
41 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic 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