What are the high-quality walnut varieties in Yunnan? Introduction to the main varieties

Yunnan Province is one of the centers of origin of the iron walnut (Juglans sigillata) in China. At present, there are 29 walnut varieties in Yunnan Province. Through long-term natural and artificial selection, they can now be divided into three types: (paper-shell walnut, semi-paper-shell walnut and iron walnut). The main superior varieties belonging to the paper-shell walnut type include Yunnan paper-shell walnut (also known as Yangbi paper-shell walnut, vegetable walnut), Dayao Santai walnut (also known as Caoguo walnut), fine-fragrance walnut, large white-shell walnut, round pineapple walnut, small paper-shell walnut, papaya walnut, Nanhua early walnut, eggshell walnut, Midu Caoguo walnut, Lushui No. 1, etc.; those belonging to the semi-paper-shell walnut type include Niangqing semi-paper-shell walnut, Tianchi round walnut, Laoyazui walnut, smooth-shell walnut, Shuijing walnut, etc.; the iron walnut type is propagated by seed, has poor quality, and is an ideal seed for cultivating rootstock. The main superior varieties planted in Yunnan are Yunnan paper-shell walnut and Dayao Santai walnut, which are characterized by high yield, high quality and disease resistance.
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