The number and percentage of absent and novel AFLP bands in <i>B. napus</i> introgression lines.

*The average rate of gain in cross A (5.9%) was significantly higher than 5.4% in cross B (P<0.05). **The average rates of loss (5.4% and 7.2%) and the total rates (11.3% and 12.6%) in two crosses were significantly different (P<0.01). a–bThere was a significant difference between the mean frequency of loss and gain in cross A (P<0.05). a–cThere was an extremely significant difference between the mean frequency of loss and gain in cross B (P<0.01).