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Journal article
High confidence QTLs and key genes identified using Meta-QTL analysis for enhancing heat tolerance in chickpea (Cicer arietinum L.)
Frontiers in Plant Science, Vol.14, 1274759
2023
Abstract
The rising global temperatures seriously threaten sustainable crop production, particularly the productivity and production of heat-sensitive crops like chickpeas. Multiple QTLs have been identified to enhance the heat stress tolerance in chickpeas, but their successful use in breeding programs remains limited. Towards this direction, we constructed a high-density genetic map spanning 2233.5 cM with 1069 markers. Using 138 QTLs reported earlier, we identified six Meta-QTL regions for heat tolerance whose confidence interval was reduced by 2.7-folds compared to the reported QTLs. Meta-QTLs identified on CaLG01 and CaLG06 harbor QTLs for important traits, including days to 50% flowering, days to maturity, days to flower initiation, days to pod initiation, number of filled pods, visual score, seed yield per plant, biological yield per plant, chlorophyll content, and harvest index. In addition, key genes identified in Meta-QTL regions like Pollen receptor-like kinase 3 (CaPRK3), Flowering-promoting factor 1 (CaFPF1), Flowering Locus C (CaFLC), Heat stress transcription factor A-5 (CaHsfsA5) , and Pollen-specific leucine-rich repeat extensins (CaLRXs) play an important role in regulating the flowering time, pollen germination, and growth. The consensus genomic regions, and the key genes reported in this study can be used in genomics-assisted breeding for enhancing heat tolerance and developing heat-resilient chickpea cultivars.
Details
- Title
- High confidence QTLs and key genes identified using Meta-QTL analysis for enhancing heat tolerance in chickpea (Cicer arietinum L.)
- Authors/Creators
- Raj Kumar - International Crops Research Institute for the Semi-Arid TropicsVinay Kumar Sharma - Central Agricultural UniversitySagar Krushnaji Rangari - International Crops Research Institute for the Semi-Arid TropicsUday Chand Jha - Indian Institute of Pulses ResearchAakash SahuPronob J. Paul - International Crops Research Institute for the Semi-Arid TropicsShreshth Gupta - Central Agricultural UniversitySunil S. Gangurde - University of GeorgiaHimabindu Kudapa - International Crops Research Institute for the Semi-Arid TropicsReyazul Rouf Mir - Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirPooran M. Gaur - International Crops Research Institute for the Semi-Arid TropicsRajeev K. Varshney - Murdoch UniversityDinakaran Elango - Iowa State UniversityMahendar Thudi - Central Agricultural University
- Publication Details
- Frontiers in Plant Science, Vol.14, 1274759
- Publisher
- Frontiers Media SA
- Identifiers
- 991005609378107891
- Copyright
- © 2023 Kumar, Sharma, Rangari, Jha, Sahu, Paul, Gupta, Gangurde, Kudapa, Mir, Gaur, Varshney, Elango and Thudi
- Murdoch Affiliation
- Food Futures Institute; Centre for Crop and Food Innovation; State Agricultural Biotechnology Centre
- Language
- English
- Resource Type
- Journal article
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