Vol 51, No 3-4 (1982)

Table of Contents

Ultrastructure of pollen grain sculpturing in several species of the Rosaceae family
Józef Kocoń, Stanisław Muszyński
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341-344
Influence of lead on the development of lupin seedlings and ultrastructural localization of this metal in the roots
Adam Woźny, Benigna Zatorska, Fortunat Młodzianowski
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345-351
Callose and osmiophilic material deposition into walls of developing megagametophyte in Stellaria
Bohdan Rodkiewicz, Krystyna Kubicka, Mieczysław Kuraś
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353-359
Longitudinal arrangement of leaf traces and compound vascular bundles in the stem of Aristolochia clematitis L.
Zofia Puławska
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361-375
Development of Cladium mariscus (L.) Pohl. fruit
Stanisław Marek, Janina Kołkiewicz
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377-380
Rape embryogenesis. IV. Appearance and disappearance of starch during embryo development
Teresa Tykarska
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381-387
Geometry of shoot apical dome and distribution of growth rates
Jerzy Nakielski
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389-402
Flavonoids in the leaves of Polish species of the genus Betula L. IV. The flavonoids of Betula pubescens Ehrh., B. carpatica Waldst., B. tortuosa Ledeb., and B. nana L. leaves
Lucyna Pawłowska
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403-411
Flavonoids in the leaves of Polish species of the genus Betula L. V. The taxonomic position on the basis of flavonoid composition
Lucyna Pawłowska
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413-421
Induced floral heteromorphism in Petunia hybrida
S. G. Kashikar, A. S. Khalatkar
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423-428
The high mutagenic effectiveness of MNUA in inducing a diversity of dwarf and semidwarf forms of spring barley
Mirosław Małuszyński
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429-440
An interesting chemical polymorphism in Pinus sylvestris L.
Jerzy Szweykowski, Lech Urbaniak
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441-452
An electrophoretic and cytological study of hybridisation between Aconitum napellus ssp. skerisorae (2n= 32) and A. variegatum (2n= 16). I Electrophoretic evidence
Roman Zieliński
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453-464
An electrophoretic and cytological study of hybridisation between Aconitum napellus ssp. skerisorae (2n= 32) and A. variegatum (2n= 16). II. Cytological evidence
Roman Zieliński
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465-471
The relationships between ripeness, vigour and methods of harvest of winter wheat grain
Riad Zaidan
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473-479
Viability and vigour of ageing pea seeds with various densities
Ryszard J. Górecki
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481-488
Bulbochaete augustowiensis Szym. sp. nova (Oedogoniales, Chlorophyta) found in Poland
Hanna Szymańska
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489-492
Studies on the rhizosphere mycoflora of certain trees
Inder J. Joshi
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493-501