Transmission electron microscopy of the fossil angiosperm exines (dedikált példány) [antikvár]

FOREWORDIn two previous volumes (Kedves 1986a, b), the basic establishments of theresearches of fossil spores and pollen grains were summarized. The transmissionelectron microscopy of the recent and fossil sporomorphs were shortly touched inthis way. This volume starts the complete synthesis of some research fields in details.Naturally it is impossible to undertake the compilation of the monographs on allextremely branching out fields of the pre-Quaternary Palynology. In this point ofview only those research fields can be taken into consideration which were investi-gated in detail by the author as well. Beyond doubt the exine ultrastructure of theangiosperm pollen grains is one of the most complicated problems. Several morpholo-gical characteristic features of these exines can be established only by the transmissionelectron-microscope method. The phylogeny of the exine ultrastructure which is apart of the combined synthesis (LM, TEM and SEM) studies may be based on theTEM data. Statements on the exine ultrastructure of the fossil sporomorphs mayexert a positive impulse on the studies by LM method for the palynological researchesof the raw material or on the studies with vegetation historical concepts. Despiteremarkable data concerning the ultrastructure of the fossil angiosperm pollen grains,this field of research can't be regarded complete. Some details must be studied later,especially the experimental part; the partial destruction of the fossil organic materialto establish the different degrees of the biopolymer organization, and its evolutionaryprocesses. This volume presents up-to-date knowledge including several new resultspublished first herein by the author. It may be expected that this contribution willbe useful for all branches of researches on the angiosperm pollen grains and willbe have a stimulating effect on the researches of the sporomorphs with new methods.Szeged, 21 June 1990.Miklos Kedves