Document Type : Research Paper


1 Former Graduate Student of Agronomy, Department of Agronomy and Crops Breeding, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran

2 Department of Agronomy and Crops Breeding, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran

3 Researcher, Department of Seed Breeding, Rice Research Institute of Iran, Rasht, Iran


In order to investigate the effects of boron, zinc and sulfur on yield and fatty acid composition of rapeseed
(Hyola 401 cultivar), an experiment was conducted in Rasht province in 2011. A field experiment with
completely randomized block design was performed with eight treatments in three replications.
Maximum grain yield (4157.6 kg ha-1) and grain oil (1770.2 kg ha-1) was obtained from S+B+Zn
treatments. The highest and lowest grain oil was obtained from S+B+Zn (42.58) and control (38.37),
respectively. The maximum oleic acid (234.8 mg g-1) and linolenic acid (26.68 mg g-1) and linoleic acid
(55.98 mg g-1) were obtained from B+Zn+S treatments. Maximum stearic and palmitic acid were obtained
from control and S+Zn treatments which was 6.5 and 15.53 mg g-1, respectively. Regarding to the results,
fatty acids composition of rapeseed are influenced by nutrient and since quality of edible oils depends on
unsaturated fatty acids, especially linoleic and linolenic acids and these acids are essential fatty acids for
the human body that must be supplied through diet. Therefor this research showed that we are not only
able to increase oil yield with can also increase oil quality with increasing fatty acid composition.


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