The paper describes the growth experiment of the autochtonous species Artemia salina fed on different monocultures of unicellular algae Isochrysis galbana, Dunaliella sp. in Aphanothece sp. used as a ...food source as well as in different mediums. The object of our observation was the size and sexual structure, growth, mortality and food regimes of Artemia in individual cultures.
In the non- or slightly polluted areas the highest total mercury concentrations were found in the digestive glands, while in the polluted area the highest concentrations were found in the gills.
PVM which infects Slovenian potato cv. Vesna was isolated from in vitro potato plantlets, propagated in tomato, and purified from fresh propagative tomato plants.
Just germinated spruce seedlings-both normal intact and those with their roots cut-were stimulated by a low-frequency alternating magnetic field (50Hz,4mT, 1h/day). The field had significant effects ...especially on the growth of the roots:it inhibited the growth of the intact main roots, and enhanced the ramification and development of the lateral ones.
The potato plant cv. Vesna tolerates the Potato Mosaic Virus (PVM) and is systemically infected with this virus. PVM was eliminated by tissue culture. The cultivation of healthy plants was ...unsuccessful if only the meristem isolation was used, as virus particles were also found in the region of the meristems. But virus-free plants were obtained by the use of thermotherapy and/or the addition of jasmonic acid to the medium.
Explanted pumpkin (Cucurbita pepo L.) cotyledons were susceptible to tumor transformation. Crown gall tumors were induced using Agrobacterium tumefaciens (wild strain B6S3/pTi). Tumor proliferation ...on intact plants was not achieved. Permanent crown gall tissue line was established on a MS medium without any growth regulators. Peroxidase activity in tumor and callus tissue lines was significantly higher than that in the plant organs. The electrophoretic protein petterns of tumor and different callus tissue lines seemed to be similar, showing only slight differences between embryogenic and non-embryogenic callus lines, or between normal and tumor tissues.
