Vol 55, No 1 (1986)

Table of Contents

Terminal vessel and early vessel arrangement in internodes of Fraxinus excelsior
Ewa Kurczyńska
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3-10
Intracellular RNA during microsporogenesis in plants: Texus baccata as a model system
Roger I. Pennell, Peter R. Bell
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11-16
Sesquiterpene lactones. XXX. Cynaropicrin in species of the subtribe Centaureanae Dumort.
Gerard Nowak, Bohdan Drożdż, Wijciech Kroszczyński, Miroslav Holub
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17-22
Isolation, chemical characterization and biological activity of alfalfa (Medicago media Pers.) root saponins
Wiesław Oleszek, Marian Jurzysta
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23-33
Oxygen and radiation effects on C02 exchange in fight and in darkness of decaploid and hexaploid tall fescue (Festuca arundinacea Schreb.)
Jerzy W. Poskuta, Curtis J. nELSON
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35-43
The metabolism of aged seeds. The ribonucleolytic activity of rye grain embryos of different ages
Kazimierz Zalewski
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45-52
An oscillatory component of propagated fluctuation electric potential in lupine shoot
Zygmunt Hejnowicz, Andrzej Pijanowski, Krzysztof Głębicki
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53-66
Localized spontaneous fluctuations of electric potential in shoots of different plants
Krzysztof Głębicki, Zygmunt Hejnowicz, Andrzej Pijanowski
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67-76
Moderately inhibitory effects of N-dodecyloxymethylene-N-methylpiperidinium and N-dodecyloxymethylene-N-methylmorpholinium chlorides on seed germination
Stanisław J. Knypl, Małgorzata Oświęcimska
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77-82
The effect of phosphours and water deficit on phosphatase activity and proline accumulation in seedling cotyledons and roots of oilseed rape as compared to that of excised cotyledons and roots
Stanisław Flasiński, Janina Rogozińska, Lucyna Drozdowska
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83-96
Radioisotopic studies of DNA biosynthesis in relation to growth of Zea mays roots
Roman Maksymowych, Andrew B. Maksymowych, Joseph A. Orkwiszewski
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97-106
Is Impatiens balsamina a qualitative short-day plant?
Elżbieta Teske
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107-113
Cupapé (Cordia dodecandra DC., Boraginaceae) a fruit tree in the process of domestication in Mexico
Leszek S. Jankiewicz, Maria T. Lwón, Victor M. Albores
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115-127
Statistical analysis of the phytocoenose homogeneity. VI. Frequency distribution of the total species diversity and evenness indices as a function of the area size. Summing-up discussion
Anna J. Kwiatkowska, Ewa Symonides
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129-140
Habitat requirements of Polygonetum natantis Soó 1927 and Potamogetonetum natantis Soó 1927 phytocenoses in north-eastern Poland
Stanisław Kłosowski, Henryk Tomaszewicz
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141-157