Effects of seed priming with GA3, KNO3 and H2O2 on seed dormancy falure and some germination characters of hazelnut (Corylus avellana L.) under laboratory condition
Subject Areas : Journal of Plant Ecophysiology
Roya Rezazadeh
1
,
شهرام صداقت حور
2
,
Marafet Mostafavi Rad
3
1 - Former MSc. Student, Horticulture department, Rasht Branch, Islamic Azad University, Rasht, I9ran.
2 - Islamic Azad University Rasht Branch: Rasht, Guilan, IR
3 - Department of Horticulture Crops Research, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran.
Keywords:
Abstract :
The seed germination of hazelnut (Corylus avellana L.) under natural condition due to hard shells and prolonged seed dormancy, is low, irregular and non-uniform. This experiment carried out in seed registration and certification laboratory of Agricultural Research Center and Natural Resources of Guilan Province, Rasht, Iran, as factorial based on completely randomized design with three replications during 2018. Three levels of gibberellic acid (GA3) 0 (GA0), 75(GA75) and 150(GA0) mg/L), three levels of KNO3 0 (K0), 1 (K1) and 2 (K2) percent and three levels of hydrogen peroxide (H2O2) 0 (H0), 0.5 (H1) and 1(H2) percent, comprised experimental treatments. The results showed that the triple interaction effect of GA3 × KNO3 × H2O2 on all measured traits was significant. The maximum of seed germination indices was observed in response to GA3 application with the dose of 150 mg/L. But, the different levels of KNO3 and H2O2 showed different impacts on germination indices. The greatest of important germination indices including the main germination of hazelnut seeds, seed germination percentage and seed germination rate were observed in response to the triple interaction effects of GA150 × K0 × H1, GA150 × K1 × H1 and GA150 × K2 × H0, respectively. Based on results of this experiment, the application of GA150 along with KNO3 1% + H2O2 1%, caused an increase in hazelnut seed germination percentage. But, the application of KNO3 2% without using of H2O2 led to enhance seed germination rate of hazelnut, in similar condition.
