Diversity of Crop Germplasm Resources in China

Diversity at species level and genetic level of crop germplasm resources in China were summarized.Based on agronomy and utilization purpose,crops in China could be divided into 8 groups: food crop,economic crop,vegetable crop,fruit crop,forage and manure crop,flower crop,medicine crop and forest crop.Each group includes several sub-groups and the 8 groups include 840 sub-groups.According to the botanic taxonomy,all crops in China cover 1251 cultivated species and 3308 species of their wild relatives which belong to 176 families and 619 genera,indicated that crop germplasm resources in China at species level are very rich.Meanwhile,under the species level,many species could be identified several sub-species,varieties or ecotypes meaning that crop germplasm resources at genetic level in China are also very abundant.This study would provide basic information and scientific support for collection,conservation,effectively utilization,and related research of crop germplasm resources in China.