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<p>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, <i>ahFAD2A</i> and <i>ahFAD2B</i>, 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 <i>ahFAD2B</i> had a stronger influence than <i>ahFAD2A</i> on elevating oleic acid content. Selecting for <i>ahFAD2B</i> alone proved nearly as effective as pyramiding both genes, suggesting a simpler breeding strategy. Twenty-four high-oleic lines (&gt;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.</p>

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Effect of ahfad2 genes on oil profile of advanced breeding lines in groundnut (Arachis hypogaea L.)

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Pesaleddula Jashuva Paul,
  • Srividhya Akkareddy,
  • Manish K. Pandey,
  • Spandana Bandila,
  • Sree Vidya Gundrathi,
  • Girish Kumar Killada

摘要

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.