Using fluorescence microscopy, we are able to see individual pollen tubes entering the ovules within the pistils of flowers. To the left is an example of two pollen tubes entering two ovules from a crossing treatment. Pollen from one population was used to pollinate the stigmas of flowers from a second population. The micropyle where the pollen tubes enter the ovule is too small to be seen, but it is located to the right side of the ovule.
Miller Lab members