The  Effect of Potassium ,Gibberellic Acid and their Interactionon Yeild , Protein content and Active Ingredient of Roselle Plant  (Hibiscus sabdariffa L.)

	The Effect of Potassium ,Gibberellic Acid and their Interactionon Yeild , Protein content and Active Ingredient of Roselle Plant (Hibiscus sabdariffa L.)
journal of kerbala university
Article 1, Volume 7, Issue 4, 2011, Pages 50-58 PDF (0 K)
Abstract
This study was conducted at Al-Bargah district (30)Km North East Kerbala city from the period from 2nd ,March till 12th ,October ,2012.The aim of this study was to assess the effect of three levels of Potassium (i.e. 0.5 , 1.0 and 2.0)g/pot , that calculated at average 75 Kg/ Don area , four concentrations of Gibberellic acid ( i.e. 0 , 50 , 100 and 150 ) mg/L and their interaction on Root growth parameters of roselle plant (Hibiscus sabdariffa L.). The treatments were applied twice ,at 4-6 true leaf stage and at the flowering stage. A Completely Randomized Design (C.R.D.)with three replicates was adopted. Means of treatments were compared using Least Significant Difference (L.S.D.) at 0.05 probability level. Results could summarized as follow. 1-Increasing potassium levels significantly increased fruits number , fresh and dry weights offruits, protein content in roots and leaves and ( Anthocyanins, Dilphinnidin-3-glucose,Gossypetine ,Sabdaretine Hibiscetine) While Not effect with increase Potassium levels. 2- Results revealed that , 50 mg/L GA3 caused an fruits number , fresh and dry weights of fruits, protein content in roots and leavesand (Gossypetine ,Sabdaretine Hibiscetine) .While 100 mg/L increase in( Dilphinnidin-3-glucose) While 150mg/L increase in(Anthocyanins). 3-The interaction between K and GA3 revealed that , the treatment of 2.0 g K and 50 mg/L GA3increased fresh and dry weights of fruitsand protein content in roots .While fruits number andprotein content in leaves not affected.

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