1. Fan X M, Tan J, Li M S, Yang J Y, Chen H M (2004). Genetic diversity of Chinese temperate and exotic tropical, subtropical quality protein maize inbred lines by SSR markers. Agric Sci China, 3(2): 94–100
2. Fan X M, Tan J, Zhang S H, Li M S, Hang Y X, Yang J Y, Peng Z B, Li X H (2003). Heterotic grouping for 25 tropical maize inbred lines and 4 temperate maize inbred lines by SSR markers. Acta Agron Sin, 29(6): 835–840 (in Chinese)
3. Forrest A T (2004). Background of U.S. hybrid corn II: breeding, climate, and food. Crop Sci, 44(2): 370–380
4. Huang Y Q, Li J S (2001). Classification of heterotic groups with RFLPs among 45 maize inbred lines. Sci Agric Sin, 34(3): 244–250 (in Chinese)
5. James G G, Joanne A L, Kendall R L, Margaret E S, Stephen K (2002). SSR variation in important U.S. maize inbred lines. Crop Sci, 42: 951–957