Muhammad Nael Khattab ⁽¹⁾, Nizar Harba⁽¹⁾ and Orwa Suleiman^(1)*

(1). Crops, Faculty of Agriculture, Tishreen University, Lattakia, Syria.

(*Corresponding author: Orwa Suleiman,  Email: aboalabd876@gmail.com)

Received:23/11/2022    Accepted: 16/01/2023

Abstract: 

Five genotypes of sunflower were planted in Al-Ghab area during the seasons 2020-2022, namely (Strain 90 (A), Strain 19 (B), Strain 9 (C), Strain 54 (D), Baladi cultivar (E), according to complete reciprocal crossbreeding program with a randomized complete block design (RCBD) and with three replications. For the studied effect of general and specific abilities variance on the compatibility of parents and crosses, the inheritance and its narrow sense, the variance of general abilities to the variance of specific abilities, and the degree of dominance of the studied traits. The results showed that there was a highly significant variation for the parental cultivars and the variation of the general and specific abilities of the individual crosses, the mutual and the reverse resulting from them, for all the traits studied. The weight of the seeds plant, plant height cm, disc area, percentage of oil%, the amount of oil (g)/plant, the weight of 100 seeds) in the inheritance of the trait disk area, while low and medium values were shown for the degree of heritability in its narrow sense in most of the traits. The results also showed that there is a work of cytoplasmic inheritance in the inheritance of quantitative traits through differences in the performance of each of the cross and reverse crosses.

Keywords: sunflowers, variance of combining ability, Heritability, degree of dominance.

Full paper in Arabic: pdf