Jin Wanmei Yin Shuping* Lu Renqiang Yuan Weifeng Dong Jing Wang Guixia Institute of Forestry and Pomology; Beijing Academy of Agriculture and Forestry Science; Beijing; 100093;

• 北京市农林科学院林业果树研究所;北京市农林科学院林业果树研究所北京;100093;