Modulating Growth and Oil Profile of Sesame (Sesamum indicum L.): Paclobutrazol and Mepiquat Chloride Impacts

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Qureshi M., Kordrostami M., UZUN B., YOL E.

Journal of Plant Growth Regulation, vol.43, no.8, pp.2905-2921, 2024 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 43 Issue: 8
  • Publication Date: 2024
  • Doi Number: 10.1007/s00344-024-11317-8
  • Journal Name: Journal of Plant Growth Regulation
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Food Science & Technology Abstracts, Veterinary Science Database
  • Page Numbers: pp.2905-2921
  • Keywords: Fatty acid composition, Mepiquat chloride, Paclobutrazol, Plant growth regulators
  • Open Archive Collection: AVESIS Open Access Collection
  • Akdeniz University Affiliated: Yes

Abstract

Sesame (Sesamum indicum L.) is an important oilseed crop with significant economic importance in many developing countries. This study rigorously investigated the impact of various applications and doses of two specific plant growth regulators, paclobutrazol (PAC) and mepiquat chloride (MC), on the development, yield components, oil content, and fatty acid composition of sesame plants across two consecutive growing seasons. The research revealed that while paclobutrazol application increased the plant height it also resulted in a slight decrease in oil content. The paclobutrazol treatment resulted in the highest seed yield (21.3 g/plant), which was significantly different from both the MC (13.1 g/plant) and PAC + MC (14.6 g/plant) treatments. In contrast, the mepiquat chloride treatment resulted in the lowest oil content. The combined application of both regulators showed intermediate effects. In addition, variations in fatty acid content were observed between applications and doses, with significant differences in saturated and unsaturated fatty acid levels. The findings provide valuable insights into the potential benefits and implications of using growth regulators in sesame cultivation, especially in the context of mechanized harvesting and oil quality optimization.