POLLEN VIABILITY IN DIFFERENT CULTIVARS AND SPECIES FORMS OF TULIPS
Sexual hybridization involves controlled pollination, the implementation of which depends on many factors, including the viability of pollen. 31 cultivar samples were selected to be used in creating new tulip cultivars. The viability of their pollen was studied. It was found that the most efficient varieties to be used in tulips crossing as pollinators refer to the diploid level, i.e. tetraploids - M. John Scheepers, Rayent, and Johann Gutenberg. Separate triploid cultivars can be included to hybridization as parent forms.