Affiliation: | 1.Laboratory of Walnut Research Center, College of Forestry,Northwest A & F University,Yangling,China;2.Key Laboratory of Economic Plant Resources Development and Utilization in Shaanxi Province, College of Forestry,Northwest A & F University,Yangling,China;3.Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant,Central South University of Forestry and Technology,Changsha,China |