Effect of seed priming with Salicylic acid and foliar application with Zinc to enhance SOD activity and some growth and yield traits of Sunflower
AbstractA field experiment was carried out in silty loam soil in General commission of agricultural researches station in spring season and in Field crops department research station- University of Anbar (Abu-Ghariab) in the fall season of 2015 that located on latitude 33.22 ? N, longitude 44.24 ? E and altitude 34.1 meter from sea level, in order to study seed priming with salicylic acid 0, 150, 300, 450 mg SA L-1, with four concentration of foliar application with Zinc 0, 50, 100, 150 mg Zn L-1) on form of ZnSo4.H2O (Zn 35%) in enhancing SOD activity and some of growth and yield of sunflower crop (cv. Luleo). The experiment was carried out in arrangement of Split plots in RCBD with three replications. The results of the experiment were summarized as following: The seed priming with 150 mg SA L-1 has led to give highest activity of SOD after 30 days after sowing date, weight of 100 seed and seed yield 4.65 ton ha-1, while the concentration 300 mg SA L-1 led to give highest activity of SOD at the beginning of flowering stage and Zn concentration in leaves in both seasons as well as the same concentration has led to highest average of leaf area, number of seeds in disc, weight of 100 seed 6.91 gm and seed yield 3.91 ton ha-1 in second season. The foliar application with Zn led to significant increase in most studied traits, the concentration 100 mg Zn L-1 gave highest activity of SOD at the beginning of flowering stage, highest average of number of seeds in disc, weight of 100 seed and seed yield 4.56 and 3.92 ton ha-1 in both seasons respectively. The same concentration recorded highest average of oil content in seeds 48.31% in second season, while concentration of 150 mg Zn L-1 gave highest average of this trait in the first season 51.78%. The two interaction between SA and Zn significantly affected in most studied traits, therefore the treatment of 150 mg SA L-1 with 100 mg Zn L-1 gave highest average seed yield in the first season of 5.04 ton ha-1.
- seed priming --- Salicylic --- acid and foliar --- Zinc --- enhance SOD activity --- growth --- yield --- Sunflower
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