Effect of Variety and Seed Moisture Content on Chemical and Physical Properties of Oilseed Rape

By studying the physical properties of oilseed rape, the obtained data have a practical application when constructing machines for sowing, harvesting, transporting, warehouse design, and seed processing. During oilseed rape harvest, seed moisture can be different, and it is imperative to understand the physical properties of the seeds to correctly adjust the equipment. Depending on the climate conditions, oilseed rape can have different seed moisture content. This investigation included three winter varieties of oilseed rape widely grown in European countries. The effect of different degrees of seed moisture (۶, ۱۱, ۱۶, and ۲۱%) on the physical properties of oilseed rape, seeds were investigated by using standard methods in three growing seasons (۲۰۱۵/۱۷). When moisture content in the kernels increased, ۱۰۰۰-grain weight, seed volume and porosity, static and dynamic angles of repose also increased in the tested varieties. Increased seed moisture reduced the true density and bulk density of the three tested varieties. The highest coefficient of friction was found on plywood and the lowest on stainless steel sheet. Oil and protein contents of the tested varieties ranged between ۳۹.۳۸ and ۴۳.۹۰%, and ۱۷.۶۵ and ۲۳.۱۲%, respectively. Oleic, linoleic, α-linolenic, and palmitic acids were the most representative fatty acids. Knowing the physical and chemical properties of oilseed rape seeds, it would be possible to significantly contribute to the breeding process in order to identify high-quality genotypes.

کلیدواژه ها:

Family Brassicaceae ، Friction coefficient ، Kernel porosity ، Oilseed rape quality.