Effect of Khellinone Derivatives on Growth and Flowering of Dianthus Chinensis L. Plant.

This study was carried out in the screen house of National Research Centre, Dokki, Giza, Cairo during two successive seasons (2011/2012 and 2012/2013). The aim of this work was to study the effect of foliar spray with different levels of khellinone dravatives 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxyphenyl)propan-1-one(I), 2-amino-6-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-4-(4-methoxyphenyl) pyridine-3-carbonitrile (II) and 7-(5-hydroxy-4,7-dimethoxybenzofuran-6-yl)-5-(4-methoxyphenyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dithione(III) at the concentrations of 50,100 and 150 ppm on vegetative growth, flowering and chemical constituents of Dianthus chinensis plant. Foliar application of all substances treatments 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxyphenyl) propan-1-one.(I), 2-amino-6-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-4-(4methoxyphenyl) pyridine-3-carbonitrile (II) and 7-(5-hydroxy-4,7-dimethoxybenzofuran-6-yl)-5-(4-methoxy- phenyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dithione (III) significantly decreased plant height and root length compared with control plant. The highest values were obtained when application of 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxyphenyl)propan-1-one. (I) derivative at 100 ppm and 50 ppm of 2-amino-6-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-4-(4-methoxy phenyl)pyridine-3-carbonitrile (II) and 7-(5-hydroxy-4,7-dimethoxy benzofuran-6-yl)-5-(4-methoxyphenyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dithione (III) derivatives. Increasing the concentration of 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxyphenyl)propan-1-one (I) derivative led to increase the number of branches, fresh and dry weight of shoots. The high significant increased were obtained when the plants treated with 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxy- phenyl)propan-1-one (I) derivative at the concentration 150 ppm .Spraying the plants with 150 ppm of 1-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-3-(4-methoxyphenyl)propan-1-one(I), and 50 ppm of 2-amino-6-(5-hydroxy-4,7-dimethoxy-1-benzofuran-6-yl)-4-(4-methoxyphenyl)pyridine3-carbo-nitrile(II) and 7-(5-hydroxy-4,7-dimethoxy benzofuran-6-yl)-5-(4- methoxyphenyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dithione (III)