Yunnan Academy of Forestry firstly at home and abroad carried out the interspecies hybrid between Juglans regia L and J.sigillata Dude, and 5 new walnut varieties have been cultivated.

• 云南省林业科学院在国内外首次开展了普通核桃和铁核桃种间杂交，培育出5个核桃新品种。