Open AccessGrowth, content of chrorophyll-carotenoid, saponins, and activity of nitrate reductase of Acalypha (Acalypha indica L.) under teh different concentrations of gibberelic acid (GA3)
Author(s) -
Dwi Karsiwi Peni,
Solichatun Solichatun,
Endang Anggarwulan
Publication year - 2004
Publication title -
biofarmasi
Language(s) - English
Resource type - Journals
ISSN - 1693-2242
DOI - 10.13057/biofar/f020101
Subject(s) - gibberellic acid , nitrate reductase , potassium nitrate , gibberellin , biochemistry , chemistry , biology , botany , horticulture , germination , potassium , enzyme , organic chemistry
The aims of this research were to find out the influence of gibberellic acid supply on growth, content of chlorophyll-carotenoid, saponins, and nitrate reductase activity of acalypha (Acalypha indica L.). The framework of this research was that the supply of gibberellic acid will influence cell division and cell enlargement. The effect of gibberellic acid at cell division occurred in the cell cycle by means of shortening G1 phase of cell cycle. Gibberellic acid will force the cell enlargement by the possibility of increasing cell osmotic pressure and membrane permeability that in turn cause water osmotic, so that the cell enlargement has taken place. The role of gibberellic acid is to support cell elongation, cambium activity and RNA synthesis and also protein synthesis. The method used in this research was completely randomized design with one factor, the treatment of GA3 supply in five level concentrations, 0 ppm, 25 ppm, 50 ppm, 75 ppm and 100 ppm, each given twice a week for a month. The result of the research indicated that the spray of GA3 with concentration of 50 ppm could increase the growth, saponin, and nitrate reductase activity of acalypha, while the spray of higher concentration of GA3 (more than 50 ppm) tend to decrease of those three parameters.