ABSTRACT

Rather numerous deviations from normal developmental type in phanerogams obviously require broader and more detailed research with the objective of elucidating significance of such deviations as far as their concrete adaptive ontogenetic or ecological aspects are concerned. Apparently breaking free from the idolized 'double fertilization' and other 'germination' or 'new formation' hypotheses would allow us to move along in elucidating the evolutional meaning and purport of the fractionated female gametophyte development in angiosperms, of fertilization as the key link therein, and of the entire problem of sexual reproduction of seed plants.