期刊名称：International Journal of Environmental Science and Development
印刷版ISSN：2010-0264
出版年度：2013
卷号：4
期号：5
页码：452-455
DOI：10.7763/IJESD.2013.V4.392
摘要：The effects of plant growth stimulating substances like naphthalene-acetic acid (NAA), Gibberellic acid 3 (GA3) and 6-benzylaminopurine (6-BA), or plant growth inhibiting substances like abscisic Acid (ABA) and [(2-chloroethyl) trimethylammonium chloride] (CCC), or their combinations, on biomass and lipid production in Pinnularia gibba var.linearis and Chaetoceros gracilis were studied.When applied at day 1 (stage I), treatments with NAA, GA3 and 6-BA or their combinations enhanced biomass production but reduced lipid contents.The total lipids, however, were higher in these treatments than that in the control.6-BA was more effective in stimulating total lipid production.No difference was found among the treatments with NAA, GA3 or their combination.Adding NAA or GA3 to 6-BA did not enhance biomass or lipid production compared with 6-BA alone.When applied at day 4 (stage II), growth stimulating substances increased biomass production compared with the control but did not affect total lipid production.Less biomass was obtained when the treatments were applied at day 4 compared with that applied at day 1.Treatments with growth inhibitors like ABA, CCC or ABA CCC at day 1 reduced biomass production and total lipids, although lipid contents were increased by the treatments.When treated with ABA, CCC and ABA CCC at day 4 , however, they did not reduce biomass production while increased lipid contents and total lipids.
