male gamete nuclei

male gamete nuclei

two HAPLOID(1) nuclei of flowering plants that arise from mitotic division of the generative nucleus inside the POLLEN GRAIN, which enter the pollen tube and eventually the EMBRYO SAC, becoming involved in the ‘double’ fertilization.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005