Effect of cultivation mediums and different concentrations of  kinetin acid on seed germination and seedling growth rates of albizzia plant, Albizzia lebbek (L.)Benth .

	Effect of cultivation mediums and different concentrations of kinetin acid on seed germination and seedling growth rates of albizzia plant, Albizzia lebbek (L.)Benth .
journal of kerbala university
Article 1, Volume 5, Issue 1, 2009, Pages 62-71 PDF (0 K)
Abstract
The experiment was carried out at the Department of Horticulture , College of Agriculture , Karbala University in 2008 to determine the effect of different concentrations of kinetin acid and different cultivation media on seed germination and seedling growth rates of albizzia seedling , Albizzia lebbek (L.)Benth .The Reeds were treated with the following concentrations of this acid : ( 0 , 10 , 20 , 30 and 40 mg /l ) and many types of cultivation media were used including : sand , peat moss , sand +peat moss at ratio of 1 : 1 v/v , sand + peat moss at ratio of 2 : 1 v/v and sand + peat moss at ratio of 1 : 2 v/v . The experiment results were as follows : The acid concentration of 40 mg /l was the most effective regarding all studied growth characteristics . The cultivation medium consisting of sand + peat moss at ratio of 1: 2 v/v was the most effective regarding germination percentage , the cultivation medium consisting of sand + peat moss at ratio of 1 : 1 v/v was the most effective regarding mean number of leaves , the medium of peat moss was the most effective regarding seedling mean length , dry weights of leaves , vegetative branches and root system , and amount of chlorophyll .The effect of interaction of acid and medium was found that acid concentration of 40 mg /l and cultivation medium consisting of peat moss was the most effective interaction on mean length of seedling , dry weights of leaves , vegetative branches and root system and chlorophyll content . The interaction of acid concentration of 20 mg / l and cultivation medium consisting of sand + peat moss at ratio of 1 : 2 v/v was significantly the most effective regarding seed germination rate .

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