Effect of seed priming and their interaction on germination and seedlings characteristics of corn SC704 (Zea mays L.)
Subject Areas :
Mehdi
Ramezani
1
(Member of Young Researcher Club, Agronomy Dept., Science and Research Branch, Islamic Azad University of Tehran, Iran.)
Reza
Rezaei sokht Abandani
2
(Member of Young Researcher Club, Agronomy Dept., Science and Research Branch, Islamic Azad University of Tehran, Iran.)
Keywords: Germination rate, seedling vigor, corn, priming, germination mean,
Abstract :
In order to study the priming effect on germination and seedling characteristics of a single cross corn (SC­704), an experiment was carried out as a randomized complete block design (RCBD) with three replications at Agricultural and Natural Resources Research Center, Mazandaran province (Sari) in 2010. Treatments included seed priming with poly ethylene glycol (PEG) at concentration of 10­%, potassium nitrate (KNO3) 0.5­%, potassium chloride (KCl) 2­%, normal water and a control (no priming). The results showed that the maximum germination rate was occurred for a pretreatment with poly ethylene glycol 10­% and hydropriming (water). The lowest shoot wet weight and germination rate was obtained for osmopriming of potassium chloride 2­%. Maximum germination rate index, average germination time and mean daily germination was observed in the control and osmopriming with KCl 2­% and the highest ratio of dry weight R/S was obtained in potassium chloride 2­% pretreatment. Also the weighted index of seedling vigor was obtained by seed pretreatment with polyethylene glycol 10­%. In conclusion, the results of this study revealed that priming procedure improved seed germination of corn hybrid SC­704 and increased seed emergence rate could eventually increase its performance. According to the results, priming by polyethylene glycol 6000 (PEG 6000) 10­% and hydropriming (pure water) for 24 hours is recommended.
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