Determination of Combining Ability in Sunflower Parents According to Line X Tester Analysis Method

Gülsüm Kayışoğlu, Rahim Ada


In this research, which including two cytoplasmic male sterile female (CMS) lines and six recessives branching male tester parent (RfRf), 12 hybrids (F1) were obtained by crossing the female and male lines in the Plant Breeding Greenhouse of Field Crops Department in 2018-19 winter period. Field trial was carried out in 2019 as four replications. Plant height (cm), head diameter (cm), 100 seed weight (g), seed yield (kg ha-1), oil content (%) and oil yield (kg ha-1) were investigated. Multiple sequence variance analysis, general and specific combining abilities, proportional relationships of some genetic parameters, heterosis and heterobeltiosis values, narrow and broad heritability were calculated. In conclusion, in this research; some of their agricultural characteristics and heritability were determined upon obtaining high yield sunflower lines. Considering the general combination abilities of parents for F1 generation, R31 was identified as appropriate parents for plant height; R02 for head diameter; R02 for 100 seed weight; R61 and R80 for yield seed yield and oil yield; and R61 for yield content. Considering the special combination abilities of hybrids in F1 generation, all hybrids were found to be significant and positive for plant height, 100 seed weight and oil content. RAM-1 X R80, RAM-19 X R61, RAM-1 X R31, RAM-19 X R71 and RAM-19 X R02 hybrids were found to be significant and positive for yield seed yield and oil yield.


Heterosis; Heterobeltiosis; Sunflower; Line x Tester analysis

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