ISPEC 12th INTERNATIONAL CONFERENCE ON AGRICULTURE, ANIMAL SCIENCES AND RURAL DEVELOPMENT 6-8 July 2023- ORDU/ TÜRKİYE, Ordu, Türkiye, 6 Temmuz - 08 Ağustos 2023, ss.246
Molybdenum, a crucial micronutrient that occurs naturally in grains, plays a pivotal role in the growth and development of durum wheat (Triticum turgidum subsp. durum). This study represents the first attempt to explore the Molybdenum contents in a panel of 130 durum wheat genotypes, aiming to assess genotypic diversity chemically and genetically variability. The genotypes included local commercial Turkish and foreign cultivars, as well as ex-situ and in-situ landraces. Molybdenum contents were analyzed using inductively coupled plasma mass spectrometry. The results showed a significant range of Molybdenum concentrations across the panel, ranging from 0.34 to 2.09 mg/kg, with an average of 0.74 mg/kg. Turkish cultivars demonstrated a diverse range, with an average concentration of 0.71 mg/kg and values ranging from 0.34 to 1.56 mg/kg. Foreign cultivars exhibited a range, spanning from 0.35 to 1.07 mg/kg, and the lowest average concentration of 0.61 mg/kg. Ex-situ landraces showcased wider content, ranging from 0.39 to 2.09 mg/kg, with the highest average concentration of 0.81 mg/kg. In-situ landraces displayed a narrower range, varying from 0.43 to 1.10 mg/kg, and an average concentration of 0.78 mg/kg. Furthermore, a Genome-Wide Association Study has shown a significant association between the “wmc657-bp132” marker located at the 4B locus and Molybdenum content, explaining approximately 10% of the variation in this trait and highlighting the genetic underpinnings of this characteristic. The variation observed in Molybdenum concentrations within the durum wheat panel further emphasizes the influence of various factors, including sources and genetic factors. These findings contribute to understanding the presence and distribution of Molybdenum in durum wheat and provide insights for breeding programs and food safety regulations to promote consumer health.