Abstract:
This paper is an extension of a previous study on the pollen
morphology and germination potential of Rhododendron racemosum
French. In this study are referred cytological aspects of process of pollen
germination at this taxon. Was examined the growth of pollen tube length
based on the concentration of sucrose in mediums, over a period of 192
hours after inoculation of pollen. The increase in length of the pollen
tubes was in most cases directly proportional to level of the pollen
germination capacity, in sense that the longest pollen tubes were formed
on nutrient mediums which permit the bigest germination of the pollen
tetrade. In this respect was demonstrated that the medium with 25%
sucrose ensure the growth of the longest pollen tubes correlated with the
style's length of flower from this genotype. Also highlights the formation
stages of pollen tube, his longevity, anomalies in male gametophyte
development to Rhododendron racemosum
