Oil quality of genetically modulated sunflower under drought
Author(s) : Ejaz-Ul-Hasan, Farooq Ahmad Khan, Usman Saleem, Sajida Habib, Rizwana Qamar, Hafiz Saad Bin Mustafa, Muhammad Anwar, Sajid Ali and Ijaz Haider
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Drought stress is a limiting factor for yield and oil quality in sunflower (Helianthus annuus L.). The objective of current study was to determine the gene action for drought stress, and its impact on oil quality. Thirty-two single cross hybrids developed by crossing 8 drought tolerant inbred lines and four drought susceptible lines through line × tester mating design. The experiment was performed using randomized complete block design where two factors i.e., genotypes and stress and three replications were used. The oil quality related traits i.e., protein content (PC), oil content (OC), palmitic acid (PA), stearic acid (SA), oleic acid (OA) and linoleic acid (LA). Degree of dominance was higher than one indicating the over dominant type of gene action for all traits and could have the potential for hybrid breeding. Based on the GCA effects, L1, L6 and L7 were good combiners for oil quality traits. Based on SCA effects, the H25 was identified a good combiner for all the traits except LA. This hybrid is recommended for good quality oil seed production under arid and semi-arid areas.