Effect of Dikegulac on Growth and Alkaloid Production in Catharanthus roseus (L.) G. DON. (Pink flowered)
1998
Choudhury S | K. Gupta Plant Physiology and Biochemistry Laboratory, Department of Botany University of Burdwan, Burdwan 713104, West Bengal, INDIA
Application of sodium-dikegulac reduced plant height with associated increase in branch and leaf number and root biomass in C. roseus (L.) G. DON. Chlorophy2 content reduced significantly after first month of 100 and 250 micro g/ml DK application. However, such reduction was replaced by significant rise after forth month in 250 micro g/ml DK application and fifth month in 100 micro g/ml DK application followed by appreciable decline only in 250 micro g/ml DK treatment but 100 micro g/ml DK maintained higher level till harvest. Total sugar content was significantly high during forth and fifth month stage of growth after DK application. Amino acid content was higher during third to fifth month in 100 micro g/ml DK treatment and during third to forth month in 250 micro g/ml DK treatment. Tryptophan, on the other hand showed higher content at the fifth month stage of growth after application of DK in both the concentrations. Leaf and root dry weight as well as total alkaloid content were highest in 100 micro g/ml DK application. DK, therefore, appears to be a potential chemical for increasing biomass and alkaloid content in C. roseus.
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