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ORIGINAL RESEARCH article

Front. Nutr.
Sec. Nutrition and Food Science Technology
Volume 11 - 2024 | doi: 10.3389/fnut.2024.1511098

Temperature affects major fatty acid biosynthesis in noug (Guizotia abyssinica) self-compatible lines

Provisionally accepted
Adane Gebeyehu Adane Gebeyehu 1,2*Cecilia Hammenhag Cecilia Hammenhag 2Kassahun Tesfaye Kassahun Tesfaye 3,4Rodomiro Ortiz Rodomiro Ortiz 2Mulatu Geleta Mulatu Geleta 2
  • 1 1Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 190, 23422, Lomma, Sweden
  • 2 Swedish University of Agricultural Sciences, Uppsala, Uppsala, Sweden
  • 3 Bio and Emerging Technology Institute (BETin), Addis Ababa, Addis Ababa, Ethiopia
  • 4 Institute of Biotechnology, Addis Ababa University, Addis Ababa, Addis Ababa, Ethiopia

The final, formatted version of the article will be published soon.

    Noug (Guizotia abyssinica) is an economically important edible oilseed crop in Ethiopia with a large variation in seed set, seed oil content, and fatty acid composition among populations. Although noug is generally strictly self-incompatible (SI), self-compatible (SC) lines were recently developed. This study was conducted to investigate the levels of variation in seed setting and oleic acid content among the self-compatible lines. The starting materials for the seed setting study were 200 genotypes selected from 100 inbred lines and having, on average, 57 seeds per capitulum, which is higher than that of the SI populations. The SC genotypes were analyzed for their oleic acid content using the half-seed technique. The analysis of 20 SC lines revealed a high variation in oleic acid content with 70% of the SC lines having 20% or more oleic acid after they were grown under 25oC/21oC day/night temperatures (high-temperature treatment). The oleic acid content increased from 8.2% before to 22.5%, on average, after the high-temperature experiment in the greenhouse. In contrast, the percentage of oleic acid in these lines grown at 21°C/18°C day/night temperatures decreased from 8.2% to 4.4% on average. There was a highly significant positive correlation between oleic acid content and temperature in SC lines. The study also suggests a significant contribution of genotype to the variation in seed setting and environmental factors (mostly temperature) to the oleic acid content. Overall, the noug SC lines showed highly significant variation in seed setting and oleic acid content, which could be used for improving the crop's seed yield and oil quality.

    Keywords: fatty acid composition, Guizotia abyssinica, Noug, Oleic Acid, self-compatibilityseedset, temperature

    Received: 14 Oct 2024; Accepted: 25 Nov 2024.

    Copyright: © 2024 Gebeyehu, Hammenhag, Tesfaye, Ortiz and Geleta. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Adane Gebeyehu, 1Department of Plant Breeding, Swedish University of Agricultural Sciences, P.O. Box 190, 23422, Lomma, Sweden

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.