Ryan Graham and Bryson Ensign, Brigham Young University
Agriculture
Agastache is an aromatic flowering plant closely related to the mint family. Most species are 0.5-3m tall with toothededged leaves covering the stem. Agastache is commonly found in landscaping, but can become quite noxious because of the abundance of seed produced in each flower head. Here we used an antimitotic agent, trifluralin, to induce polyploidy in Agastache seedlings with the foresight of creating a sterile version of the plant. Putative polyploids were checked for chromosomal content via flow cytometry. Our data show that trifluralin treatment is a potentially successful method for inducing polyploidy in Agastache. Further, among the positively identified polyploids, we have noticed suggestive patterns of sterility. However, further research needs to be conducted to confirm this finding. For now, we are able to present an effective method for inducing polyploidy in Agastache and, potentially, other plant species.