甘蓝型油菜同品系黄籽与黑籽间发芽生理的差异

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

Physiological characters of yellow seeded lines ( Brassica napus L.) from different genetic sources in germination period

Yellow seeds and brown seeds that selected from seven yellow seeded lines ( Brassica napus L.) in different genetic sources were used as materials to test physiological characters in germination period. Compared with brown seeds, yellow seeds had higher content of sugar and fresh weight of seedlings, lower content of protein, lower activity of nitrate reductase (NR) and root system (AR).The results showed that yellow seeds could convert more nourishment for growing in the germination period. After germination period, as its storage used up, absorption and synthesis of nutritive materials would be lower than brown seeds, this might be one of reasons of lower growth potential and yields of yellow seeded. A few yellow seeded lines had higher NR, AR and content of protein. it implied that it was possible to improve yielding ability of yellow seeded lines with correct methods.