Results of Southern blotting suggested that there were all a small gene family of MaMAPK, and MaMAPKgene may be small copies in genomic DNA of three species of Malus.

• Southern杂交结果表明，MoMAPK基因在3种苹果的基因组中均以低拷贝和基因家族形式存在，为进一步研究MaMAP基因的表达调控，揭示苹果属植物耐旱的分子机制奠定了基础。