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The sculpturing patterns of pollen grains in some species of the Rosaceae family were analyzed by SEM. Three patterns are described, typical for Prunus spinosa, Pyrus elengrifolia and Crataegus sp.… (More)
Pollen grain surface of Vaccinium myrtillus L. was analyzed by scanning electron microscopy. Pollen grains remain in tetrahedral tetrads. Grain surface is verrucose, consisting of thick, irregularly… (More)
The ultrastructure of pollen grain surface in allotetraploid petunias was analyzed by scanning electron microscopy. The pollen grain wall is developed into characteristic pattern of convulations.
The seed surfaces of wild and cultivated petunias were analyzed by SEM. The sculpturing of the seed surface was similar in all forms analyzed.
The presence and structure of the wart layer was investigated in the tracheids of the following juniper species: J. communis L., J. communis var. saxatilis Pall., J. sabina L., J. virginiana L., J.… (More)
The ultrastructure of stigma surface in allotetraploid petunias was analyzed by scanning electron microscopy. The stigma forms a bilobed structure with. a distinct central depression. The stigma… (More)