Fatty acids characters and grain yield of Brassica napus L. as affected by tillage systems and sowing date
In order to study the effect of ttillage systems and sowing dates on yield, yield components and oil content of rapeseed genotypes (Brassica napus L.), field experiment was carried out at the Sari Agricultural Experimental Station, 25 km of Eastern Sari, Iran in 2001-2002 and 2002-2003. The experimental design was split plot factorial with three replications. Three tillage system levels were allocated to main plots, and combination ofrapeseed genotypes (Hyola 401, PF) and sowing dates (including 8 Sep, 23 and 7 Oct) were randomised to sub-plots. The tillage levels were consisting of: no- tillage, minimum tillage (residue return with two disks) and conventional tillage (residue return with plow and one disk). Results of ANOVA using SAS Procedures showed that tillage systems had significant differences at the 1％ probability level on grain yield, conventional tillage produced more grain yield and there were no difference between minimum and no tillage. Combined analysis showed that tillage system had significant differences on oil content of brassica (P＜0.05), and conventional tillage and no tillage with means of 42.68 ％ and 42.54 ％ oil content in comparison minimum tillage with 41.63％ have advantage. Varieties were differences (p＜0.01) for grain yield, oil content and oil yield. Result showed that sowing date had significant difference at the 5％ probability level on oleic acid content, in which 23 and 7 Oct produced the most oleic acid content and 8 Sep (first sowing date) was located in the end rank.Overall the result of this research showed that different sowing date and agronomic techniques have different effects on saturated fatty acids and unsaturated fatty acids, these parameters were no equal direct on fatty acids combination.
Tillage systems Brassica napus L. Yield and Oil Content Sowing date and Fatty acids
H.Omidi Z.Tahmasebi Sarvestani A.Ghalavand S.A.M.Modarres Sanavy Ha Omidi
Agronomy Department, Faculty of Agriculture ILam University, ILAM, Iran Agronomy Department, Tarbiat Modares University, Tehran, Iran
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1206-1211
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）