Abstract:
The paper presents the characteristics of the germination process in Lotus corniculatus L. and Coronilla varia L. pollen.
We made estimates on the length of pollinic tubes in the dynamics of germination (after 1, 2, 24, 48 and 72 hours since
the inoculation on medium), according to the glucidic concentration of the nutritive mediums used in this experiment.
We pointed out the maximum lengths of the pollinic tubes, correlated to the lengths of flower stiles from the two
taxons. Achieving a certain length of the pollinic tubes is very important, because the fertilization of ovules is thus
ensured and, implicitly, the fructification of the respective taxons. We also referred to the way of the emergence of
pollinic tubes from the two taxons. The bicellular pollen-type of the two Fabaceae is shown by pointing out the
generative cell in the pollinic cell, which, after the mitotic division, produces two spermatic cells having the value of
immobile male gametes. We have also shown the type of anomalies of the pollinic tubes and the frequency of these
anomalies during the process of pollen germination at the two taxons from the Fabaceae family. The obtained results
were correlated to pollen germinating potential of the two taxons, to geographic spreading area, and to native resistance
of the two taxons to various abiotic factors. Although the phylogenetic connection between the two investigated taxons
is very tight, there are distinctive traits of the germinating process, which have a diagnosis value and may represent
valuable genetic and physiological indicators.
