Abelardo J De La Vega and Chapman Scott C, 2006. Multivariate analysis of display interaction between environment and general or specific combining ability in hybrid crops. Crop Science 46: 957-967.
Farrokhi E, Alizadeh B and Ghaffari M, 2008a. General combining ability analysis in sunflower maintainer lines (Helianthus annuus L.) using line×tester crosses. Proceeding of the 17th International Sunflower Conference, Cordoba, Spain.
Farrokhi E, Khodabandeh A and Ghaffari B,.2008 b. Studies on general and specific combining abilities in sunflower (Helianthus annuus L.). Proceeding of the 17th International Sunflower Conference, Cordoba, Spain.
Farshadfar E, 1998. Application of biometrical genetics in plant breeding. Tagh Bostan Publications. Kermanshah. Iran. 528 pp. (in Persian).
Ghaffari M, 2003. Use of principle component analysis method for selection of superior three way cross hybrids in sunflower. Seed and Plant Improvment J 19(4): 513-527. (in Persian).
Ghaffari M, Farrokhi Iand Mirzapour M,2011. Combining ability and gene action for agronomic traits and oil content in sunflower (Helianthus annuus L.) using F1 hybrids. Crop Breeding Journal 1 (1): 75-87.
Ghaffari M and Farrokhi I, 2008. Principle component analysis as a reflector of combining abilities. Proceeding of the 17th International Sunflower Conference, Cordoba, Spain.
Goksoy AT, Turkec A and Turan ZM, 2002. Quantitative inheritance in sunflower (Helianthus annuus L.). Helia 25(37): 131-140.
Gvozdenovic S, Joksimovic J, and Skoric D, 2005. Gene effect and combining abilities for plant height and head diameter in sunflower. Genetika 37(1): 57-64.
Hladni N, Skoric D, Kraljevic- Balalic M, Sakac Z and Jovanovich D, 2006. Combining ability for oil content and its correlations with other yield components in sunflower (Helianthus annuus L.). Helia 29(44):101-110.
Kaya Y, Evci G, Durak S, Pekcan V and Gucer T, 2007. Determining the relationships between yield and yield attributes in sunflower, Turk J Agric 31: 237-244.
Marinkovic R and Marjanovic- Jeromela A, 2005. Assessment of components of genetic variance of mass 1000 seeds in sunflower (Helianthus annuus L.) . Genetika 37(2): 145-153.
Skoric D, Jocic S, Hladni N and Vannozzi GP, 2007. An analysis of heterotic potential for agronomically important traits in sunflower (Helianthus annuus L.). Helia 30(46): 55-74.
Sawargaonkar SL and Ghodke MK, 2008. Heterosis in relation to combining ability in restorer lines of sunflower.Helia 31, (48): 95-100.
Volotovich AA, Silkova TA, Fomchenko NS, Prokhorenko OV, Davydenko OG, 2008. Combining ability and heterosis effects in Sunflower of byelorussian origin.Helia, 31 (48): 111-118.