Speakers

Biography

Maryam Salami studied plant breeding at the Isfahan University of Technology as an MS in 2012. She then joined Prof. Bahram Heidari's research group at Shiraz University's Department of Plant Production and Genetics. She received her PhD degree in 2022 from Shiraz University. She has published nine research articles in SCI(E) journals.

Abstract

Optimizing the profile of fatty acids in rapeseed (Brassica napus L.) is critical for maximizing the value of edible oil. Climate change and water scarcity are among the significant limited factors that constrain the production and development of oilseed crops, especially rapeseed (Brassica napus L.), in arid and semi-arid areas. Seeds of 121 accessions of Brassica napus were analyzed for seed oil content (SOC) and fatty acid composition through gas chromatography–mass spectrometry (GC–MS) analysis. The experimental design was a lattice by patterning 11 × 11 with three replicates under two irrigation regimes for two years (2017-2019) in Shiraz, Iran. The SOC and fatty acid composition of oil among the genotypes were significantly different (P-value <0.01). Among those fatty acids detected, oleic acid (75.7-94.9%) was the predominant fatty acid, followed by linoleic acid (0.2-1.8%), arachidic acid (0.1–0.6%), heneicosylic acid (0.1–0.6%), ecosadienoic acid (0.05–0.69%), and behenic acid (0.5–0.5%). The SOC of all rapeseed genotypes was rich in omega-9 fatty acid (oleic acid), which makes the oil nutritionally beneficial to human health by preventing the onset of various disorders. The results showed that drought stress significantly decreased SOC by 6.08%. Variety G85 showed the highest SOC (38.62%) under drought stress, and it had a high-quality oil due to the high percentage of oleic acid (> 80%). Therefore, the G85 variety might be a promising genotype for starting a crop improvement program to achieve a more drought-tolerant rapeseed genotype with high-quality seed oil content.