Rangari, S K and Sahu, A and Naik, Y D and Jyothis, A and Pandey, M K and Varshney, R K and Thudi, M and Punnuri, S M (2025) Consensus Genomic Regions and Key Genes for Biotic, Abiotic and Key Nutritional Traits Identified using Meta-QTL Analysis in Peanut. In: Advances in Arachis through Genomics and Biotechnology (AAGB-2025), 23-25 March 2025, Novotel, Goa, India.
Full text not available from this repository. (Request a copy)Abstract
Peanut (Arachis hypogaea L.) is an important oilseed crop extensively cultivated in tropical and subtropical regions, facing numerous biotic and abiotic challenges. Among these challenges, infection by Aspergillus flavus and Aspergillus parasiticus leads to aflatoxin contamination, posing serious health risks. Identifying genomic regions associated with key traits and incorporating them into breeding programs can help to address these challenges. Although many large-effect QTLs for yield and other important traits have been identified, their use in breeding programs is limited due to unfavourable interactions in different genetic backgrounds. To enhance its effectiveness, this study aimed to identify stable QTLs across different genetic backgrounds and environmental conditions. We analysed QTL data from 30 independent studies conducted over the past 12 years, focusing on biotic, abiotic, aflatoxin, morphological, nutrient, phenological and yield-associated traits in peanut. In this study, genetic maps information was used to construct consensus maps, and 891 QTLs were used for meta-analysis. A total of 70 Meta-QTLs were identified, with confidence intervals (CIs) ranging from 0.07 to 9.63 cM and an average of 2.40 cM. Among these, 13 Meta-QTLs contained 18 aflatoxin-associated QTLs. Four alfatoxin QTLs were located on LG05, and two each on LG07, LG13 and LG16. From these meta-genomic regions, several genes were identified, potentially influencing traits like yield, morphological and resistance to biotic and abiotic stress. The characterization of these Meta-QTLs offers significant promise for the advancement of future peanut breeding initiatives.
| Item Type: | Conference or Workshop Item (Poster) |
|---|---|
| Divisions: | Center of Excellence in Genomics and Systems Biology Global Research Program - Accelerated Crop Improvement |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Meta-QTL, Aflatoxin, Peanut, Oilseed crops, Health risk |
| Subjects: | Mandate crops > Groundnut Others > Aflatoxins |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 09 Jul 2025 05:49 |
| Last Modified: | 09 Jul 2025 05:49 |
| URI: | http://oar.icrisat.org/id/eprint/13220 |
| Acknowledgement: | UNSPECIFIED |
| Links: | |
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