氮肥对甘蓝型优质杂交油菜品质性状的影响

Effect of Nitrogen Level on Quality Characters of High Quality Hybrid Brassica napus Variety

为探索油菜施用氮肥与其品质性状间的关系,以杂交油菜新品种三北98和油研599为材料,研究氮肥不同施用水平对其16个品质性状的影响。结果表明:氮肥对优质杂交油菜的含油量、种子蛋白质产生极显著影响,对脂蛋总量产生显著或极显著影响,对芥酸、硫甙、棕榈酸、硬脂肪酸、廿碳烯酸、饱和脂肪酸总量、不饱和脂肪酸总量、不饱和脂肪酸指数、不饱和脂肪酸/饱和脂肪酸之比不产生显著影响。对油酸、亚油酸、亚麻酸、油酸+亚油酸总量的影响因品种不同而显著程度不同。含油量与施氮量间呈极显著负相关,种子蛋白质与施氮量间呈极显著正相关,芥酸、硫甙、棕榈酸、饱和脂肪酸总量、不饱和脂肪酸总量与施氮量间均呈不显著负相关,油酸、亚油酸、油酸+亚油酸总量与施氮量间呈不显著或显著负相关,亚麻酸与施氮量间呈不显著或极显著正相关;硬脂肪酸、廿碳烯酸、不饱和脂肪酸/饱和脂肪酸的比值、不饱和脂肪酸指数与施氮量间的相关性在两品种表现不一致。在品质性状的相关性中,含油量与种子蛋白质、亚麻酸呈极显著负相关,种子蛋白质与亚麻酸呈极显著正相关,亚麻酸与棕榈酸呈显著或极显著正相关。

16 quality characters of two quality hybrid rape varieties（Sanbei 98 and Youyan 599） under the condition of different nitrogen application level were analyzed to discuss the relationship between nitrogen application level and quality characters.The results showed that nitrogen application level had very significant effect on oil content and seed protein.And very significant or significant effect on total oil ＋ protein content and no obvious effect on the content of erucic acid,glucosinolates,palmitic acid,stearic acid,eicosenoic acid,saturated fatty acid,unsaturated fatty acid and index of unsaturated fatty acid,unsaturated fatty acid-saturated fatty acid ratio.There were different significant effects on oleic acid,linoleic acid,linilenic acid and total oleic acid ＋ linoleic acid in two tested varieties.There was very significant negative relation ship between oil content and nitrogen application level.Seed protein was very positively related to nitrogen application level.There was no significant negative relation between nitrogen application level and erucic acid,glucosinolates,palmitic acid,saturated fatty acid,unsaturated fatty acid.There were no significant or significant negative relation between nitrogen application level and oleic acid,linoleic acid,oleic acid＋ linoleic acid.There was no significant or very significant positive relation between nitrogen application level and linolenic acid.There were differences in the relations between nitrogen application level and stearic acid,eicosenoic acid,index of unsaturated fatty acid,unsaturated fatty acid/saturated fatty acid ratio in two tested varieties.There was very significant negative relation between oil content and seed protein,linolenic acid,very significant positive relation between seed protein and linolenic acid,and significant or very significant positive relation between linolenic acid and palmitic acid.