Pollen tube growth rate and morphological anomalies of pollen tubes at Scilla Bifolia L.

Abstract

This study of male gametophyte of Scilla bifolia L. ssp. bifolia highlights pollen tube growth and growth rate which are central role in the fertilization process for plants. Reference is made to the cytological aspects of pollen tubes in relation with sucrose concentration in culture mediums. We used variants of nutrient media, with sucrose concentration of 0% to 100%. We conclude that is a strong positive correlation between the increase in length of pollen tubes and germination potential. The longest pollen tubes were formed on mediums with 15% - 25% sucrose. The data obtained prove that the increase in pollen tube length is genetically determined being correlated with the length of floral style. The growth rate of pollen tubes of Scilla bifolia is accelerated in the first 24 hours after inoculation pollen. We highlight the peculiarities of building pollen tube, longevity and abnormalities in male gametophyte development of Scilla bifolia.