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Effects of Physical and Chemical Seed Priming Techniques on Seed Germination and Seedling Growth of Maize (Zea mays L.)

Department of Agricultural Machines and Equipment, College of Agriculture, University of Basrah, Basrah, Iraq
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(Received: January 13, 2023; Accepted : February 17, 2023)


Experiments including both physical and chemical priming were carried out in order to examine the influence of magnetism (MF) Ultraviolet-C radiation (UV-C), microwave radiation (MW), Gibberellic acid (GA3), Ammonium molybdate (Mo) and hydro-priming (Hydro) on the development of corn from its seedling stage. Unprimed seeds were used as a control. Specifically, seed priming with MW 10 sec and UV-C 120 min significantly increased final germination percentage (FGP), GRI, GV, peak value (PV) and seedling vigour index (SVI) compared to control. Also, results showed that seed priming with UV-C 120 min, MF 6 h and UV-C 60 min significantly increased the SVI and shoot length (SL) compared with the control. However, the highest values for mean daily germination (MDG) were observed in seed priming with MW 10 sec, MF 6 h, UV-C 120 min and UV-C 60 min than other seed priming treatments. While the seed priming with MW 20 sec showed the highest values for MGT. However, the highest value for root length (RL) was observed in seed priming with gibberellic acid (GA3), UV-C 120 min, MF 3 h, MF 6 h and UV 60 min. This experiment suggested that physical and chemical seed priming could boost maize seed germination and seedling growth.
Key words : Ammonium molybdate, gibberellic acid, hydro-priming, microwave radiation, ultraviolet radiation