1. Anonymous. Poppy Report. Soil Crops Office (Toprak Mahsullar Ofisi). 2013.

2. Dodiya NS, Jain SK, Dubey RB. Heterosis and combining ability in opium poppy (Papaver somniferum L.). J Med Aroma Plant Sci. 2005;27:431-434. 

3. Doğramaci S. Researches on heterosis on yield and some traits of the hybrids of selected poppy (Papaver somniferum L.) lines. PhD, Ankara University, Ankara, Turkey. 2013.

4. Dubey RB, Jain SK, Maloo SR. Combining ability and heterosis for latex yield, seed yield and other agronomic traits in opium poppy (Papaver somniferum L.). Indian J  Gen Plant Breed. 2007;67:392-395.

5. Griffing B. Concept of general and lkaloid combining ability in relation to diallel crossing systems. Aust J Biol Sci. 1956;9:463-493.

6. Gumuscu A. Researches on heterosis on yield and some traits of the hybrids of selected poppy (Papaver somniferum L.) lines. PhD, Ankara University, Ankara, Turkey. 2002.

7. Gumuscu A, Arslan N. Researches on general and specific combining ability of yield and some traits of the hybrids of selected poppy (Papaver somniferum L.) lines. Acta Horticulturae (826) Leuven: Int Soci Hortic Sci (ISHS). 2009;105-110.

8. Kaymak F. Calculation of General and Special Combining Abilities and Compatibility in Diallel Hybridization System. Ministry of Agriculture and Forestry, General Directorate of Cotton Studies, Nazilli Region, Cotton Research Institute. Nazilli, Turkey. 1980.

9. Kucuk YS. Extraction of alkaloids from the poppy plants grown in different regions of Turkey and investigation of the properties of these compounds in nonaqueous media. PhD, Ankara University, Ankara, Turkey. 1996.

10. Kumar B, Singh HP, Verma AK, Misra HO, Patra NK. Combining ability analysis in relation to heterosis in opium poppy (Papaver somniferum L.). J Med Aroma Plant Sci. 2008;30:83-87.

11. Kumar B, Singh VR, Ram G, Singh HP. Genetic combining ability estimates for inheritance of economic traits in opium poppy (Papaver somniferum L.). ISHS Acta Horticulturae 1036: International Symposium on Papaver. 10.17660/ActaHortic. 2014.1036.4.

12. Misra HO, Lal RK, Chandra R, Sarkar S, Singh S. Combining ability analysis through line × tester analysıs in opium poppy (Papaver somniferum L.). ISHS Acta Horticulturae 1036: International Symposium on Papaver 10.17660/ActaHortic. 2014.1036.3.

13. Morice J, Louarn J. Study of morphine in the oil poppy (Papaver somniferum L.). Annales de l’Amelioration des Plantes. 1971;21:465-484.

14. Rahimi A, Arslan N, Valizadeh N. Evaluation the Variation of Morphine Percentage in Six Different Turkish Opium Poppy (Papaver somniferum L.) Lines in Three Years. JMPB. 2015;2:209-214.

15. Rastogi A, Mishra BK, Siddiqui A, Srivastava M, Shukla S. GGE Biplot Analysis Based on Diallel for E×ploitation of Hybrid Vigour in Opium Poppy (Papaver somniferum L.). J Agric Sci Tech. 2013;15:151-162.

16. Shukla S, Singh SP.  Line×tester analysis for combining ability in opium poppy (Papaver somniferum L.). J Med Aroma Plant Sci. 2004;26:271-276.

17. Singh R, Pandey RM. Combining ability and heterosis in opium poppy (Papaver somniferum L.). Current Advances Agri Sci. 2011;3:130-134.

18. Tiwaria RK, Singh HP, Trivedia M, Singh SP. Genetics of Morphine and Seed-Related Traits in Opium Poppy. J herb Spi  Med Plants. 2008;13:107-121.

19. Valizadeh N, Rahimi A, Arslan N. Variation in Fatty Acid Composition of Three Turkish Slit Flower Opium Poppy (Papaver somniferum L.) Lines. Int J Bioscien. 2014;4:1-9. 

20. Valizadeh N. Effect of heterosis on yield and yield components of hybrids from alkaloid types poppy cultivars and lines. PhD, Ankara University, Ankara, Turkey. 2015.

21. Verhalen LM, Murray JC. A diallel analysis of several fiber properties traits in upland cotton (Gossypium hirsutum L.). Crop Sci. 1967;7:501-505.

22. Yadav HK, Shukla S, Singh SP. Genetic divergence in parental genotypes and its relation with heterosis, F1 performance and general combining ability (GCA) in opium poppy (Papaver somniferum L.). Euphytica. 2007;157:123-130.

23. Yadav HK, Maurya KN, Shukla S, Singh SP. Combining ability of opium poppy genotypes over F1 and F2 generations of 8×8 diallel cross. Crop Breed Appl Biotech. 2009;9:353-360.

24. Yadav HK, Shukla S, Singh SP.  General combining ability estimates in the F1 and F2 generations for yield, its component traits and lkaloid content in opium poppy (Papaver somniferum L.). Euphytica. 2009;168:23-32.

25. Yadav HK, Singh SP. Inheritance of quantitative traits in opium poppy (Papaver somniferum L). Genetica. 2011;43:113-128.