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Pollen grains of 9 species of the genus Plantago (Plantaginaceae), including 8 taxa native to Poland, were observed under a light microscope and a scanning electron microscope. Descriptions of grain sculpture are illustrated only SEM micrographs. The studied pollen grains were medium-sized or small, spherical or prolate spheroidal. Their sculpture was always verrucate with granulation. In the studied...
The paper presents results of research on seed sculpture of Plantago major, P. intermedia, P. media, P. coronopus subsp. coronopus, P. maritima subsp. maritima, P. atrata subsp. carpatica, P. lanceolata and P. arenaria. Special attention was paid to the sculpture of the external layer of the testa. Observations were made under a light microscope and a scanning electron microscope. The sculpture typical...
The paper reports results of a biometric study of four features of Leymus arenarius (L.) Hochst. caryopses on the basis of 23 samples collected at marine and inland sites. The productivity of caryopses in the spike and the strength of their germination were determined.
The paper reports results of a morphological study of pollen grain of three varieties of Helianthus annuus: Wielkopolski population variety and two interline hybrids Frankasol and Coril. The viability of the pollen grain was also determined. No significant differences were found between the population variety and the two interline hybrids.
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