The results were as follows:1 .The genomic DNA of walnut was extracted by a modified CTAB method. The modified isolation buffer was: 100 mmol/L Tris-HCl (pH 8.0).

• 确定了适于AFLP分析的核桃基因组DNA提取方法为改良CTAB法；其提取液成份为:100mmol/L Tris-HCl；pH 8.；0;