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Open access

David G. Tork, Neil O. Anderson, Donald L. Wyse, and Kevin J. Betts

The genus Linum L. contains ≈200 primarily blue-flowered species, including several ornamentals, yet no reports exist regarding the cut flower potential of this genus. The objective of this study was to evaluate the cut flower potential of perennial flax cultivars (L. perenne L. ‘Blue Flax’ and ‘Sapphire’; Expt. 1, 2018) and accessions (L. austriacum L., L. lewisii Pursh., and L. perenne; Expt. 2, 2019), and record traits that will enable breeding and selection for improved cut flower performance. The mean vase life across both cultivars in Expt. 1 was 9.2 days. In Expt. 2, L. perenne had the longest average vase life (9.3 days), followed by L. austriacum (9.1 days) and L. lewisii (8.3 days). The floral preservative (Floralife 300) significantly increased vase life by an average of 1.7 days in Expt. 1, and 1.6 days in Expt. 2, and resulted in a significantly greater number of flowers (≈2x) in both experiments. Significant variation was observed among genotypes for most traits, including vase life (6.2 to 11.3 days) and number of flowers (1.3 to 10.5), highlighting the opportunities for improving the potential of cut flower perennial flax through breeding.

Full access

Marie Abbey, Neil O. Anderson, Chengyan Yue, Michele Schermann, Nicholas Phelps, Paul Venturelli, and Zata Vickers

Aquaponics, the combination of hydroponics and aquaculture into one growing system, is a controlled environment production system that potentially has increased environmental and consumer benefits over traditional production methods. There are many different ways to configure aquaponics systems that include different fish species, water circulation, lighting, plant species/density, and more. We tested three cultivars of lettuce, a common aquaponically produced crop, for yield in multiple aquaponic systems and conditions over a 13-month period in Minnesota. Four different aquaponic configurations and four types of fish were tested over the course of the experiment. There was no addition of supplemental nutrients to the systems to evaluate the differences between treatments and set a baseline. There was no difference in yield between lettuce produced aquaponically and those grown in soilless medium. However, there was a difference in yield between lettuce grown with different fish treatments. The tilapia treatment produced higher average yield than yellow perch. There was a difference between cultivars, with higher average yield from loose-leaf bunch cultivars (Salanova, Skyphos) than the bibb type (Rex). Average yield for all but one treatment was above that of reported commercial field production, making lettuce a competitive aquaponic crop in most systems.

Open access

Chengyan Yue, Zata Vickers, Jingjing Wang, Neil O. Anderson, Lauren Wisdorf, Jenna Brady, Michele Schermann, Nicholas Phelps, and Paul Venturelli

The present study systematically investigated the effects of warehouse and greenhouse aquaponic growing conditions on consumer acceptability of different basil cultivars. A total of 105 consumers rated their liking of three basil cultivars (Nufar, Genovese, and Eleonora), each grown in three conditions (aquaponically in a greenhouse, aquaponically in a warehouse, both with Cyprinus carpio, Koi fish, and grown in soilless medium). We used linear random effect models to investigate consumer preferences for attributes of basil plants grown in different environments by controlling for individual-specific random effects. Participants generally liked the soilless medium–grown and greenhouse aquaponically grown basil plants more than the warehouse aquaponically grown plants. The soilless medium–grown basil had the highest appearance liking and flavor intensity, followed by the greenhouse aquaponic grown and then by the warehouse aquaponic grown. Aquaponically grown cultivars were rated less bitter than soilless medium–grown cultivars.

Free access

Neil O. Anderson, Esther Gesick, Vincent Fritz, Charlie Rohwer, Shengrui Yao, Patricia Johnson, Steven Poppe, Barbara E. Liedl, Lee Klossner, Neal Eash, and Judith Reith-Rozelle

A new Chrysanthemum ×hybridum Anderson garden chrysanthemum, ‘Lavender Daisy’ (U.S. Plant Patent No. 19,831), adds a new flower color to the Mammoth™ series, which are advanced interspecific hybrids from an open-pollinated cross between hexaploid C. weyrichii (Maxim.) Tzvelv. × C. ×grandiflora Tzvelv. This cultivar is early-blooming (Week 32) and exhibits single to duplex daisy-type inflorescences with dark purple ray florets and gold disk florets with massive floral displays. ‘Lavender Daisy’ is a USDA Z3b (–34.4 to –37.2 °C) winter-hardy herbaceous perennial with a tight cushion shrub phenotype. In their second

Free access

Neil O. Anderson, Peter D. Ascher, Vincent Fritz, Charlie Rohwer, Steven Poppe, Shengrui Yao, Patricia Johnson, Lee Klossner, Neal S. Eash, Barbara E. Liedl, and Judith Reith-Rozelle

A new garden chrysanthemum with a shrub plant habit is released as a descendent of a cross involving two hexaploid species: Chrysanthemum weyrichii (Maxim.) Tzvelv. (female) × C. ×grandiflorum Tzvelv. (male). Chrysanthemum ×hybridum Anderson MN 98-89-7 [U.S. Plant Patent (PP) 14,495] is a vigorously growing shrub chrysanthemum for garden culture, exhibiting extreme hybrid vigor. Single daisy reddish-purple flowers cover the foliage in the fall, numbering >3000 on second-year plants. This selection displays excellent winterhardiness in U.S. Department of Agriculture (USDA) Z3b+ (–34.4 to –37.2 °C) as well as frost-tolerant flowers. In its second and subsequent years of growth after planting, MN 98-89-7 grows into a fall flowering (August–October), herbaceous shrub ranging in plant height from 61.0 to 91.4 cm with a diameter of 76.2 to 152.4 cm. Its spherical plant shape is achieved naturally with self-pinching, creating a highly manicured appearance; it also attracts honey bees and butterflies as pollinators. MN 98-89-7 is a vegetative product and this unnamed selection is being released for germplasm purposes as well as for potential licensing and naming.

Open access

Andrzej K. Noyszewski, Neil O. Anderson, Alan G. Smith, Andrzej Kilian, Diana Dalbotten, Emi Ito, Anne Timm, and Holly Pellerin

In cases where invasive species are presumed to be strictly exotic, the discovery that the species is also native can be disconcerting for researchers and land managers responsible for eradicating an exotic invasive. Such is the case with reed canarygrass (Phalaris arundinacea), for which decades of misinformation led to the call for nationwide control of this species in the United States. However, native populations were first reported by LaVoie and then later confirmed by Casler with molecular analyses. This, coupled with the discovery by Anderson that this species has been used in weavings by Native Americans for centuries, also made the native forms of interest for protection. Identifying the native status of historic, herbarium specimens via molecular analyses is of great interest to determine localities of native populations for confirmation with extant specimens. Genetic-based methods describing DNA polymorphism of reed canary grass are not well developed. The goal of the presented research is to assess the utility of genomic DNA obtained from historic (herbaria) and extant (fresh) tissue of reed canarygrass and the application of using Diversity Arrays Technology sequencing low density for genetic population studies.

Open access

Gerardo H. Nunez, Neil O. Anderson, Christopher S. Imler, Laura Irish, Chad T. Miller, and Mariana Neves da Silva

During the 2021 American Society for Horticultural Science annual conference, the Teaching Methods Professional Interest Group hosted the workshop “Going beyond Zoom: Tips and tricks for teaching horticulture online.” This workshop provided a forum for the dissemination of tools, materials, and approaches used to facilitate active learning in horticulture courses. Here we summarize the topics presented in the workshop as a resource for current and future horticulture instructors.

Open access

Neil O. Anderson, Alan G. Smith, Andrzej K. Noyszewski, Emi Ito, Diana Dalbotten, and Holly Pellerin

The issue of native invasive species management rarely occurs and is fraught with biological, social, and economic challenges as well as posing difficulties in decision-making for land managers. The terminology for categorization of invasive species is examined in the context of their bias(es), which complicates control. An example of a newly determined native species, which is also invasive, is used as an example to navigate control and regulatory issues. Native, invasive reed canarygrass (Phalaris arundinacea L.) occurs throughout Minnesota and most likely the entire midwest region of central United States and Canadian provinces. The species was previously assumed to be an exotic, nonnative Eurasian import but recent molecular evidence supports its status as a native but invasive species. We address how this change to being a native but highly invasive species modifies approaches to mitigate its potential control for state, Tribal, and local authorities. The implications of these new findings will require differential shifts in land managers’ perspectives and approaches for control. Particular differences may exist for Tribal Land Managers vs. departments of natural resources and private agencies. Additionally, regulatory challenges have yet to be decided on how to legislate control for a native invasive species that had been previously assumed as exotic or foreign in origin. These opportunities to change attitudes and implement judicial control measures will serve as a template for other invasive species that are native in origin.

Free access

Neil O. Anderson, Vincent Fritz, Charlie Rohwer, Steven Poppe, Barbara E. Liedl, Shengrui Yao, Patricia Johnson, Judith Reith-Rozelle, Lee Klossner, and Neal Eash

Greenhouse and garden chrysanthemum cultivars, Chrysanthemum ×grandiflorum Tzvelv. (syn. Dendranthema ×grandiflora Tzvelv.; syn. C. ×morifolium Ramatuelle), are grown for use as floral cuts, potted plants, and garden annuals or perennials worldwide with a wide array of flower colors and petal and inflorescence types (Anderson, 2006). Garden forms are the number one herbaceous perennial in the top 15 U.S.-producing states with a wholesale farm gate value of $27.854 million in 2012 (U.S. Dept. of Agriculture, National Agricultural Statistics Service, 2013). Upright plant habit types (for

Free access

Neil O. Anderson, Peter D. Ascher, Vincent Fritz, Charlie Rohwer, Steven Poppe, Shengrui Yao, Patricia Johnson, Barbara E. Liedl, Judith Reith-Rozelle, Lee Klossner, and Neal Eash

Garden chrysanthemums, Chrysanthemum ×grandiflorum Tzvelv. (=Dendranthema ×grandiflora Tzvelv.; =C. ×morifolium Ramatuelle), are the number one herbaceous perennial in the top 15 U.S. producing states with a wholesale farm gate value of $27.854 m in 2012 (USDA NASS, 2013). Greenhouse chrysanthemum cultivars of the same species are also widely produced as cut flowers and flowering potted indoor plants worldwide in an extensive range of flower forms, patterns and colors (Anderson, 2006). Fall flowering is a popular trait of all garden types (Anderson, 2006;