Effects of osmopriming on fatty acid content in three canola (Brassica napus) cultivars
Canola production in Iran is growing fast and the area allocated to this crop in the last five years has almost doubled. Water stress is the most common stress in Iran to which canola crop is exposed. Seed priming can lead to better astablishment in crops under water stress. Seed priming is a technique of controlled hydration and drying that result in more rapid germination when the seeds are reimbibed. In this study, fatty acid contents of three canola cultivars were measured under various priming treatments.Seeds were primed at two time ( 12 and 24 hours) and five priming concentrations using polyethylene glycol (PEG) 6000 (0,-10, -12,- 14,- 16, -18 bar). Contents of palmitic acid, palmitoleic acid, margaric acid, stearic acid, oleic acid, linoleic acid, linolenic acid,arachidic acid, and erucic acid were measured in SLM0496, Okapy, and Licord cultivars. Comparing primed and non-primed seeds, the results showed that at 12 hours of priming the amounts of all fatty acids except palmitoleic acid and stearic acid were reduced. At both intervals (12 and 24 hours), priming increased the levels of palmitoleic and stearic acids. Higher osmotic potential of PEG increased the contents of six fatty acids. This didnt happen for three fatty acids, namely, palmitoleic, margaric and stearic acids. Significant differences were detected between cultivars for all fatty acids except palmitic acid. Averaged over all,for pamitoleic acid, SLMO496 cultivar,, and for margaric, steraric, arachidic, erucic, and oleic acid, Okapy cultivar had the highest contents. Licord cultivar exhibited the least fatty acid contents.
fatty acid Brassica napus osmopring
Reza Tavakkol Afshari Somaye Ehsanfar Ali Modarres Sanavy
Department ofAgronomy, Colleg of Agriculture, University of Tehran College of Agriculture, University ofTarbiat Modarres
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
170-172
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）