Document Type : Research Paper
Authors
Abstract
This research explored the priming effect on dry matter yield and two hybrid maize qualitative characteristics (S.C.640 and S.C.704). This Study was carried out with a factorial experiment in randomized completely block design with four replications in 2010- 2011 in Agricultural and Natural Resources Research Center Qaemshahr (Qarakheil). Treatments involved two type corn seeds (S.C.640 and S.C.704) and seven priming solutions which contain polyethilen glycol (PEG) with 5 and 10 percent densities, potassium nitrat (KNO3) with 0.5 and 1 percent densities, chloride potassium with 1 and 2 percent densities, hydro priming (soaking in water) and control (with out priming). Results showed that the maximum dry matter yield in hectar was obtained by priming with polyethilen glycol solution by 5 and 10 percent densities which respectively equals 9556 and 8979 kg/ha. The Maximum dry weight of stem to whole and the range of dry weight in ear to stem and leaf were respectively achieved by priming with polyethilen glycol solution in 5 and 10 percent densities. Also, the maximum rate of fiber, protein, sugar and ash was jointly obtained by polyethilen glycol priming with 10 percent densities which respectively equal 33.40, 15.26, 26.03 and 7.02 percent and the minimum rate of protein and ash was achieved by polyethilen glycol priming with 5 percent (7.21 and 4.41 percent). The maximum rate of protein, sugar and ash were under the influence of interaction varieties × priming with polyethilen glycol by 10 percent under (S.C.640) percent densities which respectively equal 32, 25.83 and 7.73 percent achieved. Among the seeds tested, S.C.640 represented the best seeds under simulated drought conditions. We can claim that these seeds are suitable for drought situations with other growth stages tested in field experiments.
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