Effect of nutrition on the distribution of potassium and phosphorus inCucurbita pepo L. Olga Vaňousová OriginalPaper Pages: 157 - 165
Amino acids and growth substances in barley root excretions (Hordeum distichon L.) and their biological effect J. HofbauerJ. Minář OriginalPaper Pages: 166 - 176
Synchronization of the cultures ofScenedesmus quadricauda by optimalizing the length of the light period J. KomárekJ. RůžičkaJ. Simmer OriginalPaper Pages: 177 - 189
The influence of exogenous DNA of different origin on the mitosis and chromosomes of irradiated meristematic cells ofVicia faba Jana ŠlotováZ. Karpfel OriginalPaper Pages: 190 - 198
Cell division and chromosome numbers in the tissue culture ofNicotiana tabacum H. Kallak OriginalPaper Pages: 199 - 204
Isolation and some physiological properties of natural plant growth inhibitors Rakhil TuretskayaV. KefeliTaisia Krupnikova OriginalPaper Pages: 205 - 221
Effect of different constant soil moisture levels on net assimilation rate, relative transpiration, osmotic pressure of cell sap and water saturation deficit of the leaves J. Václavík OriginalPaper Pages: 222 - 233
Chemical composition, protein digestibility and heat of combustion of filamentous green algae F. HindákS. Přibil OriginalPaper Pages: 234 - 244
Pectic enzyme production and morphogenesis inHelminthosporium atypicum K. S. DeshpandeK. B. Deshpande OriginalPaper Pages: 245 - 250
Effects of temperature on infection of French bean leaves (Phaseolus vulgaris L.) by lucerne mosaic virus J. BodnárB. A. Kvíčala OriginalPaper Pages: 251 - 256
Dispersing of radioactive sodium and potassium preparations applied on the surface of plants, as a source of misinterpretations in biological experiments R. AntoszewskiElwira K. Lis OriginalPaper Pages: 257 - 258
The effect of humus substances on the level of free amino acids in wheat plants Helena Havlíčková OriginalPaper Pages: 259 - 265
Test-tube fertilization inNicotiana tabacum by means of an artificial pollen tube culture Věra BalatkováJ. Tupý OriginalPaper Pages: 266 - 270