Fatty Acid Composition of Canola Cultivars Affected by Different Sowing Dates
الموضوعات :Taraneh Samarzadeh Vazhdehfar 1 , Farzad Paknejad 2 , Amir Hossein Shirani Rad 3 , Saeed Vazan 4 , ‎Mostafa‎ Oveisi‎ 5
1 - Department of Agronomy and Plant Breeding, Faculty of Agriculture, Karaj Branch, ‎Islamic Azad University, Karaj, Iran‎
2 - Karaj branch Islamic Azad university, karaj, Iran
3 - Seed and Plant Improvement Institute (SPII), Agricultural Research, Education and ‎Extension Organization (AREEO), Karaj, Iran.‎
4 - Department of Agronomy and Plant Breeding, Faculty of Agriculture, Karaj Branch, ‎Islamic Azad University, Karaj, Iran‎
5 - Department of Agronomy and Plant Breeding, Faculty of Agricultural Sciences and ‎Engineering, University of Tehran, Karaj, Iran
الکلمات المفتاحية: Fatty Acid Composition, Brasica napus L, late-season drought stress, new cultivation status, sowing date,
ملخص المقالة :
To investigate the effect of sowing date on yield and qualitative traits of canola cultivars and cope with late-season drought stress, an experiment was carried out for two planting years in Karaj (Iran). Sowing dates in six levels including three fall and three winter sowing dates were considered as the main factor and five canola cultivars (RGS003, Dalgan, Zabol10, Hyola401 and Hyola4815) as the sub-factors. The results showed that except for palmitic acid, the simple effect of sowing date on all the studied traits was significant in winter. The simple effect of cultivar on all traits in fall was significant and in winter, it was only significant on the seed yield and seed oil yield. The interaction between sowing date and cultivar in fall is the reason of significant effect of seed oil yield, linoleic acid, linolenic acid, erucic acid and glucosinolate and in winter, it is the reason for the significance of seed yield, oil content, oil yield and erucic acid. Dalgan cultivar had the highest seed yield and oil yield on sowing date of October 7, and had the highest levels of oleic, linoleic and palmitic fatty acids. In addition, with low and standard erucic acid and glucosinolate, this cultivar is recommended based on the results of this study.
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