The first study evaluated the reproductive potential of glossy buckthorn (Rhamnus frangula) cultivars by measuring seed yield, seed size, and germination rates. Results offer important information for understanding the fecundity of this invasive shrub, which poses ecological challenges in many regions. By clarifying how different cultivars contribute to seed production and spread, the findings can inform management and regulatory decisions aimed at reducing the environmental impact of glossy buckthorn.
The second study focused on propagation strategies for northern bayberry (Morella pensylvanica), a native shrub valued for its landscape and ecological benefits. Researchers found that "retipping" micropropagated plants significantly increased liner yield, providing a practical method for improving nursery production efficiency. This technique offers growers a reliable way to enhance supply of this desirable species for restoration and ornamental use.
Together, these studies highlight how scientific research can support both invasive species management and the sustainable production of beneficial native plants.
According to Dr. Brand, "The Rhamnus work was conducted to support the nursery industry which was seeking data to confirm the low fecundity levels of cultivars of Rhamnus frangula that have a narrow-leaved characteristic. Fecundity data published in a peer reviewed, refereed journal is needed to gain sterile cultivar exemptions in state bans of invasive plant species. A graduate student, Jackie Edgett, conducted the research as part of her MS degree. Jackie now is on the staff of the Arnold Arboretum in Boston, MA."
Dr. Brand is Professor of Horticulture and Plant Breeding and Nursery Extension Specialist at the University of Connecticut. His areas of research include woody landscape plants and nursery crops, ornamental plant breeding and Aroniaberry fruit production.
The full articles can be read on the ASHS HortTechnology electronic Journal website at https://doi.org/10.21273/HORTTECH05632-25 and https://doi.org/10.21273/HORTTECH05625-25
Established in 1903, the American Society for Horticultural Science is recognized around the world as one of the most respected and influential professional societies for horticultural scientists. ASHS is committed to promoting and encouraging national and international interest in scientific research and education in all branches of horticulture.
Comprised of thousands of members worldwide, ASHS represents a broad cross-section of the horticultural community-scientists, educators, students, landscape and turf managers, government, extension agents and industry professionals. ASHS members focus on practices and problems in horticulture: breeding, propagation, production and management, harvesting, handling and storage, processing, marketing and use of horticultural plants and products. To learn more, visit ashs.org.
