RESPONSE OF FOUR FLAX GENOTYPES TO GROWTH CHARACTERISTICS, SEED YIELD AND OIL UNDER DIFFERENT SEED RATES
2024
Kh. Mahmood, A. | H. Noaman, A.
A field experiment was conducted at the Al-Hamidhiya Research Station, College of Agriculture, University of Anbar, during the winter season of 2021-2022 to study the effect of seeding rates on several flax genotypes. The experiment was carried out using a split-plot arrangement according to the Randomized Complete Block Design (R.C.B.D) with three replications. The main plots included four seeding rates: 15, 25, 35, and 45 kg ha-1, while the sub-plots included four genotypes of flax: Sakha 1, Sakha 5, Syrian, and Local. The results showed that the Sakha 1 genotype was significantly superior in the number of main branches, crop growth rate, individual plant yield, and oil yield with 1.60 plant branches-1, 3.20 g m-2 day-1, 0.827 g, and 0.599 tons ha-1, respectively. The Sakha 5 genotype was superior in earliness at the beginning of flowering and the percentage of oil in the seeds with 93.75 days and 34.57%, respectively. The Syrian genotype showed superiority in terms of stem diameter with 2.59 mm. Flax plants planted with a seed quantity of 45 kg ha-1 outperformed in early flowering, yield growth rate, oil percentage, and oil yield, reaching 91.92 days, 3.85 g m-2 day-1, 33.20%, and 0.624 tons ha-1, respectively. Meanwhile, plants planted with a seed quantity of 15 kg ha-1 outperformed in the highest average stem diameter, number of main branches, and individual plant yield with 2.92 mm, 1.53 plant branches-1, and 0.822 g, respectively.
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