Abstract
Combining ability analyses were estimated for 20 lines (females), three restorers (testers) and their 60 hybrids using Line ×
Tester mating design to assess the breeding potentiality of sunflower breeding material. Analysis of variance for all the studied
traits showed significant differences among genotypes. The data were recorded on quantitative and quality parameters viz.,
head diameter, 100 achene weight, achene yield per plant, oil contents, palmitic acid, stearic acid, oleic acid and linoleic acid
compositions. Based upon significant and positive GCA effects, the lines L6 and L11 showed the highest effects for achene
yield per plant, oil contents and oleic acid while L6 and L7 showed the highest GCA effects for 100 achene weight but negative
GCA effects for linoleic acid. The highest positive SCA effects for traits head diameter and achene yield per plant were shown
by cross L11 × T2 while the crosses L17 × T1, L6 × T1, L20 × T3 and L5 × T3 showed the highest positive SCA effects for
100 achene weight, oil contents, oleic acid and linoleic acid respectively. The crosses L19 × T2 and L10 × T2 showed the
highest negative SCA effects for palmitic acid and stearic acid respectively. All the traits in the experiment showed dominant
type of gene action due to preponderance of higher SCA than GCA variances emphasizing the vitality of heterosis breeding.
Therefore, these results are valuable for improvement of quantitative as well as qualitative traits in sunflower breeding material
to fulfill the edible oil requirements and ensure food security for mounting population of the globe.
Faisal Saeed Awan, Muhammad Ahsan Iqbal , Muhammad Rizwan, Hafeez Ahmad Sadaqat. (2020) GENETIC ASSESSMENT AND COMBINING ABILITY ANALYSES OF ACHENE YIELD AND OIL QUALITY TRAITS IN Helianthus annuus L. HYBRIDS, Pakistan Journal of Agricultural Sciences, Volume 57, Issue 1.
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