The effect of seed priming hormone on the farm on quantitive and qualitative characteristics deteriorated corn cultivars (Zea mays L.)

In order to study of seed priming hormone in the field an experiment was conducted factorial based on completely randomized block design with three replications at the research farm of Faculty of Agriculture, Polytechnic University of Shahroud in 2016. Experimental factor were including hormone priming (control, Gibberellin hormone, Cytokinin hormone), Accelerated aging (0, 10, 15 day) and cultivar (260 and 704). First the seeds in order to create different vigors under accelerated aging test were placed(Temperature 40°C and humidity 90%) and then by150 micromol hormones cytokinin and gibberellin in 25 C treatment and in the farm were cultivated. Characteristics measured in farm including leaf area index, relative water content, chlorophyll index, biological yield, grain yield, rows per ear, grains per ear, 1000-grain weight and harvest index. Results comparison indicate accelerated aging reduces the measured characteristics and seed priming with cytokinin and gibberellins had a significant effect on the characteristics studied.So that the grain yield with treatment gibberellins and cytokinin hormones respectively was (4968.05 kg.ha) and (4082.03 kg.ha).The result showed that seed deterioration was reduced in studied characteristics and seed priming befor planting on the farm by hormones effective on quatitive and qualitative characteristics.