Paul, P J and Akkareddy, S and Pandey, M K and Bandila, S and Gundrathi, S V and Killada, G K (2026) Effect of ahfad2 genes on oil profile of advanced breeding lines in groundnut (Arachis hypogaea L.). The Nucleus. pp. 1-13. ISSN 0029-568X
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Abstract
The oil quality of groundnut is largely determined by the balance between oleic and linoleic acids; higher oleic acid levels enhance nutritional value and shelf life. This study assessed the effects of two key genes, ahFAD2A and ahFAD2B, on fatty acid composition using 100 recombinant inbred lines derived from crosses between three popular cultivars (TAG 24, Dheeraj, Visishta) and a high-oleic donor (ICGV 181024). Oil quality was analysed using Near-Infrared Reflectance Spectroscopy and gene variants were tracked through marker-assisted selection. Results showed that ahFAD2B had a stronger influence than ahFAD2A on elevating oleic acid content. Selecting for ahFAD2B alone proved nearly as effective as pyramiding both genes, suggesting a simpler breeding strategy. Twenty-four high-oleic lines (>70% oleic acid) were identified and four promising RILs (16, 18, 71, and 86) exhibiting an oleic/linoleic ratio above 9. These lines offer valuable resources for developing groundnut varieties with enhanced oil quality, improved nutritional benefits and extended shelf life. This article aligns with SDG-2 (Zero Hunger) of the UN Agenda for Sustainable Development.
| Item Type: | Article |
|---|---|
| Divisions: | Center of Excellence in Genomics and Systems Biology Global Research Program - Accelerated Crop Improvement |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Groundnut, Oil quality, High Oleic Acid, ahFAD2A and ahFAD2B, O/L Ratio, SDG-2 (Zero Hunger) |
| Subjects: | Mandate crops > Groundnut Others > Genetics and Genomics |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 15 Apr 2026 10:52 |
| Last Modified: | 15 Apr 2026 10:52 |
| URI: | http://oar.icrisat.org/id/eprint/13597 |
| Official URL: | https://link.springer.com/article/10.1007/s13237-0... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | Pesaleddula Jashuva Paul is grateful to S. V. Agricultural College, ANGRAU, Tirupati and Institute of Frontier Technology, RARS, ANGRAU, Tirupati for providing facilities to conduct the research work. |
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