1. Amanath, S. (1991). Combining ability analysis for stomatal density in chewing tabacco (Nicotiana tabacum L.).Tobacco Research. Central Tobacco Research Institute. BiharIndia, 17: 127-128.
2. Bagheri, A., Yazdi-Samadi, B., Taeb, M. and Ahmadi, M.R. (2001). A study on genetic diversity in landraces of sunflower in Iran. Iranian Journal of Agricultural Sciences, 32: 447-456 (In Persian).
3. Issues in Diallel Analysis
4. Chen, S.Y. (1972). Genetic studies of leaf yield and nicotine content in Nicotiana tabacum L. Taiwan Agriculture Quarterly, 8: 124-132.
5. Dehghani, H., Torabi, M., Moghadam, M. and Ghanadha, M.R. (2005). Biplot analysis of cross data for infection type of wheat stripe rust. Seed and Plant Improvement Journal, 21: 123-138 (In Persian).