新疆核桃属只有一个种,即核桃(Juglans regia),但有栽培的和野生的两个群系。 栽培的核桃,长期以来均是种子繁殖,加之地理环境因素等的影响,形成了现在栽培的核桃种内类型的多样性。 50年代,新疆果农把栽培的核桃按核壳的厚度分为薄壳核桃和厚壳核桃两种。以后随着核桃选种工作的逐步开展,果农又将核桃叫出了一些名称。例如,在和田地区,称 Xinjiang walnut is only one species, namely walnut (Juglans regia), but cultivated and wild two groups. Cultivation of walnuts, seeds have long been breeding, coupled with the geographical factors such as the impact of the formation of the walnut species now cultivated within the diversity. In the 1950s, Xinjiang farmers to the cultivation of walnut shells according to the thickness of the shell is divided into two kinds of walnut and walnut thick shell. Later, with the gradual development of walnut seed selection work, walnut farmers also called out some of the names. For example, in the Hotan area, said