Most of amino acid sequences of S-RNase gene in Rosaceae Prunus genus were used to form their phyligenetic tree.

• 结合GenBank中Blast的结果,对蔷薇科李属(Rosaceae Prunus)果树55个S-RNase基因构建系统进化树,显示李属果树S-RNase基因的种内相似性并不高于种间相似性。