Vol 49, No 3 (1980)

Table of Contents

In vitro culture of Secale cereale L. explants-callus formation and organ differentiation
Jan J. Rybczyński
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155-160
Differentiation of shoot elements from the rachis of Secale cereale L.
Jan J. Rybczyński, Andrzej Stolarz, Aurelia Ślusarkiewicz-Jarzyna
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161-168
Ultrastructure of cells after reversible dark-induced blocking of mitotic divisions in antheridial filaments of Chara vulgaris L.
Maria Kwiatkowska, Janusz Maszewski, Maria M. Maszewska
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169-186
Genesis of grana and stroma thylakoids in leaf chloroplasts of four orchid species
Barbara Damasz
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187-193
The influence of kinetin on regeneration of the protonema from isolated protoplasts of the moss Funaria hygrometrica L. Sibth
Urszula Nowak, Fortunat Młodzianowski
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195-203
Fine structure of plastids during androgenesis in Hordeum vulgare L.
Fortunat Młodzianowski, Krystyna Idzikowska
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205-210
Effect of phytohormones on the growth of Scenedesmus quadricauda (Turp.) Bréh
Ewa Tatkowska, Józef Buczek
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211-220
The effect of nitrogen nutrition on growth and on plant hormones content in Scots pine (Pinus silvestris L.) seedlings grown under light of different intensity
Marian Michniewicz, Jadwiga Stopińska
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221-134
The effect of potassium nutrition on growth and on plant hormones content in Scots pine (Pinus silvestris L.) seedlings
Marian Michniewicz, Jadwiga Stopińska
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235-244
Phytohormones level in the leaves of Hyoscyamus niger L. during variable photoperiods at the time of flower initiation and differentiation
Jan Kopcewicz, Gabriela Centkowska, Krystyna Kriesel
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245-258
Reduction of nitrates in Cucumis sativus L. seedlings I. Influence of tungsten and vanadium on absorption and reduction of nitrates
Józef Buczek, Ewa Kowalińska, Krystyna Kuczera
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259-267
Reduction of nitrates in Cucumis sativus L. seedlings II. Influence of tungsten and vanadium on nitrate reductase and adenosine triphosphatase activities
Józef Buczek
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269-280
Flavonoids in the leaves of polish species of the genus Betula L. L The flavonoids of B. pendula Roth. and B. obscura Kot. leaves
Lucyna Pawłowska
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281-296
Flavonoids in the leaves of polish species of the genus Betula L. II. The flavonoids of B. "nova" and B. humilis Schrk. leaves
Lucyna Pawłowska
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297-310
Flavonoids in the leaves of polish species of the genus Betula L. III. The flavonoids of B. oycoviensis Bess. leaves
Lucyna Pawłowska
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311-320
Statistical analysis of the grain morphology of the present and fossil cereals
Romuald Kosina
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321-337
Accumulation of heavy metals in an ecosystem influenced by zinc-plant emissions
Zuzanna Czuchajowska, Elżbieta Lorek, Teresa Strączek
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339-348
The history of Pseudomonas extorquens In commemoration of the 20th anniversary of the death of Professor Kazimierz Bassalik
Ludmiła Bassalik-Chabielska
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349-352