以不同遗传背景的甘蓝型黄籽油菜中分离出的黄籽和黑籽为材料，测定发芽期间幼苗的发芽、生长、硝酸还原酶（ＮＲ）活性、根活力、糖和蛋白质含量等生理生化指标。结果显示，不同遗传背景的黄籽品系之间各指标大都存在极显著的差异；黄籽和黑籽相比，黄籽的ＮＲ活性和根活力显著低于黑籽，而非还原糖和苗重却极显著高于黑籽，但个别黄籽品系具有较高的ＮＲ活性、根活力和蛋白质含量 The yellow and black seeds isolated from the yellow-seeded rapeseed (Brassica napus L.) with different genetic backgrounds were used to determine the physiological and biochemical parameters such as germination, growth, NR activity, root activity, sugar and protein content . The results showed that there were extremely significant differences in the indexes among the yellow seed lines with different genetic backgrounds. Compared with yellow seed and black seed, the NR activity and the root activity of yellow seed were significantly lower than those of black seed, while those of non-reducing sugar and seedling weight But it was significantly higher than black seeds, but individual yellow seeds had higher NR activity, root vigor and protein content