Meena, H. P., M. Sujatha, and K. S. Varaprasad. 2013. “Achievements and Bottlenecks of Heterosis Breeding of Sunflower (Helianthus Annuus L.) in India”. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING 73 (02):123-30. https://doi.org/10.5958/j.0975-6906.73.2.019.