Univrsity of Tehran Press Iranian Journal of Field Crop Science 2008-4811 55 2 2024 06 21 Investigating the Morpho-Physiological Traits, Yield, and Seed Quality of Three Accessions of Camelina under Water Stress Conditions Investigating the Morpho-Physiological Traits, Yield, and Seed Quality of Three Accessions of Camelina under Water Stress Conditions 89 104 96625 10.22059/ijfcs.2023.361897.655017 FA Azita Yari Department of Agronomy and Plant Breeding Faculty of Agriculture, Ilam University, Ilam, Iran 0009-0009-5611-9848 Nusratullah Abbasi Department of Agronomy and Plant Breeding Faculty of Agriculture, Ilam University, Ilam, Iran 0000-0002-5426-4605 Somayeh Hajinia Department of Agronomy and Plant Breeding Faculty of Agriculture, Ilam University, Ilam, Iran 0000-0002-4971-6734 Journal Article 2023 07 12 Drought stress is one of the most important factors that reduce the yield of crops in arid and semi-arid regions, including the climatic conditions of Iran. The experiment was conducted as factorial based on completely randomized design with three replications in the research greenhouse of Ilam University in 2020. The experimental factors included irrigation at three levels (100, 60, and 30% of field capacity) and three accessions of camelina (Kermanshah, Sabzevar, and Shahrekord). The results showed that under the irrigation conditions of 30%, seed yield, biological yield, harvest index, plant height, number of capsules per plant, number of seeds per capsule, relative leaf water content, photosynthesis rate, transpiration rate, stomatal conductance and total chlorophyll respectively 69.4, 53.8, 33.9, 44.1, 72.9, 25.6, 43.8, 72.0, 62.9, 56.7, and 61.1% reduction compared to optimal irrigation they found There was no difference observed between the three populations investigated in different irrigation conditions in terms of the investigated traits. In addition, the results showed that the highest amount of camellia seed oil (39%) was obtained in Kermanshah massif under favorable irrigation conditions; which decreased by 40.8% under severe stress of dehydration. In general, it is possible to use camelina Kermanshah under conditions of moderate water stress for oil production. Drought stress is one of the most important factors that reduce the yield of crops in arid and semi-arid regions, including the climatic conditions of Iran. The experiment was conducted as factorial based on completely randomized design with three replications in the research greenhouse of Ilam University in 2020. The experimental factors included irrigation at three levels (100, 60, and 30% of field capacity) and three accessions of camelina (Kermanshah, Sabzevar, and Shahrekord). The results showed that under the irrigation conditions of 30%, seed yield, biological yield, harvest index, plant height, number of capsules per plant, number of seeds per capsule, relative leaf water content, photosynthesis rate, transpiration rate, stomatal conductance and total chlorophyll respectively 69.4, 53.8, 33.9, 44.1, 72.9, 25.6, 43.8, 72.0, 62.9, 56.7, and 61.1% reduction compared to optimal irrigation they found There was no difference observed between the three populations investigated in different irrigation conditions in terms of the investigated traits. In addition, the results showed that the highest amount of camellia seed oil (39%) was obtained in Kermanshah massif under favorable irrigation conditions; which decreased by 40.8% under severe stress of dehydration. In general, it is possible to use camelina Kermanshah under conditions of moderate water stress for oil production. https://ijfcs.ut.ac.ir/article_96625_3dc8c7edcfd22274ec16790c9ca3f6c1.pdf