%0 Journal Article
%T Researches regarding the germination process at species of alimentary plants in experimental conditions
%A Maria Magdalena Zamfirache
%A Rodica Rugina
%A Constantin Toma
%A Zenovia Olteanu
%J Analele £¿tiin£¿ifice Ale Universit£¿£¿ii Alexandru Ioan Cuza din Ia£¿i,Sectiunea II A : Genetica si Biologie Moleculara
%D 2008
%I Alexandru Ioan Cuza University of Iasi
%X The aim of this study was to identify the genetical, biochemical, morphological and anatomical modifications induced by some biologically active substances with stimulator effect on Raphanus sativum L. seedlings, cultivated in laboratory conditions. There were tested three substances (caffeine, kinetine, 2, 4-dichlorophenoxyacetic acid) in concentrations recognized as producers of some functional effects in culture plants, as follows: modifications of cellular division (mitotic index and frequency of the appearance of chromosomal aberrations); the dynamic of the activity of oxidative enzymatic complex (superoxid dismutase, catalase, peroxidase) and the total protein content; morpho- anatomical aspects regarding the germination process (biometric measurements and interpretations of the structure of seedling organs). The applied treatments influence, in generally, the entire process of seed germination and seedling ontogenesis (translated by the cytogenetical, morpho-anatomical and biochemical effects mentioned above), depending on the type and concentration of the utilized substance. The results of this study reveal the complexity of the metabolical transformations of the treated culture plants, whipping up to new explorations of some aspects of practical interest.
%U http://www.gbm.bio.uaic.ro/index.php/gbm/article/view/714