2.The Importance of Plant germplasm 种质资源的重要性 Germplasm Resources are a physical foundation for Plant breeding. Polymorphism of germplasm assures successful breeding In past plant breeding, all breakthroughs in Plant breeding come from discoveries of extraordinary source of plant germplasm e.g. Dwarf genes in wheat and rice cms genes in rice, sorghum, rapeseed 2 gene in maIze 00 genes in rapeseed2.The Importance of Plant germplasm 种质资源的重要性 • Germplasm Resources are a physical foundation for Plant breeding. Polymorphism of germplasm assures successful breeding. • In past plant breeding, all breakthroughs in Plant breeding come from discoveries of extraordinary source of plant germplasm e.g. Dwarf genes in wheat and rice cms genes in rice, sorghum, rapeseed O2 gene in maize “00” genes in rapeseed