2017 ASHS Annual Conference

This presentation will describe the techniques and the process of converting prolific seed producing landscape ornamentals into sterile or nearly sterile forms. Oryzalin and colchicine have been used to double chromosomes while guard cell measurements and flow cytometry have been used to determine ploidy conversion and identify chimeras. Complete sterility has been achieved in three species of Cassia and up to 95% reduction in seed production has been achieved in Delonix and Spathodea species.