Garlic (Allium sativum L.), an asexually propagated crop, is grown as an important vegetable and medicinal plant. China is the biggest garlic producer in the world. However, little is known about the genetic background of garlic germplasm resources in China. The characteristics of vegetative propagation of garlic makes it very difficult to construct mapping populations for research on elite genes. With the increasing requirement for nutritional quality, especially for high allicin content, it is urgent to c...