Successful germination of native seed is critical for supplying seedlings for restorations. Prior research has demonstrated acid scarification as a useful means to overcome prairie seed dormancy. Both acid and alkaline scarification were utilized in three Baptisia species (B. alba, B. australis, and B. bracteata). Seeds were scarified in concentrated 98% sulfuric acid or 1M NaOH for different time intervals (20, 40, 60, and 90 min) and germination measured after 21 days. Scarification time influenced germination rates within the test period. However, optimal scarification exposure varied among the three species and suggested higher seed recalcitrance in B. alba and bracteata compared to B. australis. Results indicated acid scarification was superior (p 35%) germination in the three species.
University of Illinois Springfield
Jack Zinnen is an undergraduate at the University of Illinois at Springfield pursuing a bachelor’s degree in Biology. He has interests in prairie restoration and ecology, and intends to pursue a Ph. D. in this field. He is interested in how different ecotypes respond to restoration and the challenge we face in selecting optimal genetic types for restoration given changing climate. He has experience leading prairie restorations and managing prairie gardens in central Illinois. Most of these endeavors focus on providing high quality habitat for pollinators and providing the illustrious aesthetics of native plants. Some of his fondest hobbies include collecting seed and growing native plugs for donation to various conservation groups.
Co-authors: Amy McEuen, University of Illinois Springfield & Marc Klingshirn, University of Illinois Springfield