ﻣﻄﺎﻟﻌﻪ ﺗﺮﻛﻴﺐ ﭘﺬﻳﺮی ﺑﺮﺧﻲ ﺻﻔﺎت زراﻋﻲ در آﻓﺘﺎﺑﮕﺮدان ﺑﻪ روش ﻻﻳﻦ×ﺗﺴﺘﺮ

General (GCA) and specific combining abilities of several sunflower inbred lines derived from French populations were evaluated i(SCA)n a line × tester experiment. The genotypes included two testers (T), 11 inbered lines (L), 22 resulting hybrids along with a commercial hybrid, Farrokh, as control. The evaluated traits were composed of days to 5% flowering, days to physiologic maturity, capitul diameter, capitul thickness, plant height, leaf area, petiol length, seed weight, seed oil content, and seed yield. Analysis of variance for the traits revealed presence of significant differences for all traits among the tested genotypes. Effect of parents against the hybrids was significant for all the traits except for days to 5% flowering and petiol length, which indicated presence of average heterosis. There were significant differences between GCA and SCA, indicating prominent effect of dominance component. GCA for lines were significant among all the evaluated traits, which may indicate highlight effect of additive components. Combinations T1×L1, T2×L11, T2×L9, T1×L7, and T1×L3 appeared as superior combinations regarding seed yield and seed weight characters. They can be integrated in the sunflower breeding program as suitable parents.