The effect of exogenous phosphate deficiency on the activity of acid phosphatase of the root of two maize genotypes Marie KummerováIvana Burešová Original Paper Pages: 1 - 7
Somatic embryogenesis and plant regeneration inCoronilla varia L. (crownvetch) long-term tissue cultures Jiřina DuškovaZ. OpatrnýJ. Dušek Original Paper Pages: 8 - 13
Histological-anatomical studies of the structure of the organogenic callus inPapaver somniferum L. J. ŠamajM. BobákK. Erdelský Original Paper Pages: 14 - 18
Changes in the content of phenolic compounds and IAA-oxidase activity during the growth of tobacco crown gall suspension culture Zofia Chirek Original Paper Pages: 19 - 27
Preliminary studies on the mechanisms of action of phosphonic analogues of morphactins on plants and bacteria H. SztajerE. ZboińskaP. Kafarski Original Paper Pages: 28 - 34
Changes inChlorella vulgaris B. populations after chronic influence with chemical and physical mutagenic factors S. G. ChankovaK. M. VinarovaV. A. Shevchenko Original Paper Pages: 35 - 41
The effect of humic acids and their different molecular mass fractions on germination in sunflower Ester Casenave de SanfilippoJ. A. ArgüelloG. A. Orioli Original Paper Pages: 42 - 48
Changes of chloroplasts density and heterogeneity during the senescence of barley leaves J. CuelloMaria N. AguilarB. Sabater Original Paper Pages: 49 - 53
Relations between intracellular pH, water relations and morphogenesis in rose plants in vitro Huguette Begin-SallanonA. CoudretM. Gendraud Original Paper Pages: 58 - 63
Purification and properties of phosphorylase from white yam tuber (Dioscorea rotundata) U. Oluoha Original Paper Pages: 64 - 76
Time course of electrolyte leakage from various samples killed by frost, liquid nitrogen or boiling I. PrášilJ. Zámečník Brief Communication Pages: 77 - 80