Morpho- Physiological Changes of Hempseed (Cannabis sativa L.) Traits as Affected by Seed Priming with Folic Acid and Hydrogen Peroxide
Subject Areas : Journal of Crop EcophysiologyShirin Karbalaye Golizadeh 1 , Touraj Mir Mahmoodi 2 , Nabi Khalili Aqdam 3
1 - Department of Agronomy and Plant Breeding, Mahabad Branch,Islamic Azad University, Mahabad,Iran
2 - Department of Agronomy and Plant Breeding, Mahabad Branch,Islamic Azad University, Mahabad,Iran
3 - Department of Agriculture, Payam noor University of Bokan, Bokan, Iran
Keywords: seed priming, hydrogen peroxide, Cannabis, folic acid,
Abstract :
To evaluate the effects of seed priming of hempseed with folic acid and hydrogen peroxide on some morphological and physiological traits a factorial greenhouse experiment based on randomized complete design with four replications was conducted at Islamic Azad University, Mahabad Branch. Treatments consisted of hydrogen peroxide at five levels (0, 7.5, 15, 22.5, 30 mm/liter) as the first factor and the four leveld of folic acid (5, 10, 20, 27 mm/liter) as the second factor.Seeds, to be primed, were immersed into solution of folic acid for 24 hours and hydrogen peroxide for 6 hours. The characteristics like chlorophyll a, chlorophyll b, total chlorophyll content, relative water content, plant height, root length, allometric coefficient, plant fresh and dry weights, were measured. Result of analysis of variance showed that the effects of folic acid and hydrogen peroxide on all characters were significant, but the interaction between the two treatments were only significant on relative water content and allometric coefficient. In this study, seed priming with 15 mm/liter of hydrogen peroxide and 5mm folic acid resulted in highest chlorophyll a, chlorophyll b, total chlorophyll contents, plant height, root length, fresh and dry weights. Increasing hydrogen peroxide level above 15mm/liter affected traits negatively. Combinated treatments of 15 mm/liter of hydrogen peroxide and 5 and 10 mm of folic acid resulted in highest relative water content and allometric coefficient, respectively. Based on the results obtained it can be concluded that priming seeds with 15 mm/liter of hydrogen peroxide and 5mm folic acid is recommended to produce proper morphological and physiological traits.
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