Citron in China
Guo Tianchi (Citrus Research Institute,Chinese Academy of Agricultural Sciences,Chongqing 630712)
There are 11 varieties (variants or hybrids) of citron in China. On the basis of their geographic distribution and plant characteristics, the west and the southwest part of Yunnan province is considered as the original center of citron plants in China. It is thought that the wild Cangyuan citron is the primordial type of citron. Etrog citron, sour citron (Chinese Lemon)and the cultivated citron are evolved from it,and finger citron from Yunan citron.