中国科学院植物研究所北京100093;
北京林业大学生物学院;
Laboratory of Plant Hardiness;
Department of Horticutural Science;
University of Minnesota;
St. Paul;
MN55108;
USA;
Department of Agricultural;
Food and Nutritional Science;
University of Alberta;
Edmonton;
Alberta;
T6G 2P5;
Canada;