American Public Gardens Association
2019 Conference
Washington D.C. June 17-21, 2019

Student Presentations: Round One
Event Type: 
Special Session
Date / Time: 
Thursday, June 20, 2019 - 11:15am to 11:45am
Diplomat Ballroom
Pre-Registration Required: 

This session is devoted exclusively to having the future leaders of public horticulture share their latest research findings. Through these undergraduate and graduate student presentations, current research pertaining to public horticulture will be shared and discussed. These student presentations provide a valuable opportunity for established professionals to learn new and exciting findings from their future peers.

This year student presentations will be happening in multiple locations and at different times of day. There will be two student presenters for each 30-minute session.



An Assessment of the Hamamelidaceae in Global Living Collections

This presentation will cover a comprehensive review of the Hamamelidaceae by summarizing taxonomy, species descriptions, conservation status, presence in living collections, and a primary cultivar checklist.

Presenter: C. Meholic, University of Delaware Botanic Gardens, Newark, Delaware


Biology and Epidemiology of a Common Plant Pathogen and Its Host Plants

Powdery mildew is one of the most prevalent plant pathogens in the Pacific Northwest with over 150 different species infecting over 1000 plants. However, scant research has been conducted on the abundant species of powdery mildew and their effects on the numerous ornamental host plants in this region. Consequently, there are knowledge gaps that impede the development of improved management and breeding guidelines for ornamental plants that are known hosts in the Pacific Northwest. Powdery mildew can greatly decrease the aesthetics and the salability of ornamental plants and its control can be costly. This research addresses these knowledge gaps by evaluating common Pacific Northwest powdery mildew species and their host plants. Specifically, Michael Bradshaw will propose ways to: 1) determine which powdery mildew traits are associated with increased pathogen virulence; 2) determine which plant traits are associated with increased host resistance; 3) examine the relationship between divergence time and host resistance to powdery mildew; and 4) phylogenetically track the origin and epicenter of recently introduced powdery mildew specimens. Collectively, these research objectives are designed to increase our understanding of powdery mildew in an understudied region.

Presenter: M. Bradshaw, University of Washington Botanic Gardens, Seattle, Washington