American Society for Horticultural Science

Global cacao (Theobroma cacao L.) productivity can be improved through field planting design informed by clone-specific compatibility. Most studies have focused on high-yield cultivar development and introgression of disease resistance, while research on crossing compatibility among clones under field conditions remains limited.

Woody plants have evolved a suite of winter survival traits. Supercooling species are constrained to temperatures above ∼−40 °C, whereas non-supercooling species can survive colder temperatures. In midwinter 1986, we observed that starch was present in the xylem of supercooling species but not in non-supercooling species.

Domestic production of ginger (Zingiber officinale) in the United States is limited by the availability of quality planting material and seasonal constraints, except in southeastern regions. Protected cultivation can extend the growing season, and identifying suitable soilless substrates and optimal fertigation rates are essential for efficient containerized production.

American elderberry has shown strong market demand and significant benefits for human health. However, challenges in labor availability and cost have limited production scale. We evaluated the feasibility of a vibratory harvest system for elderberry and quantify the impacts of shaking stroke length and frequency on harvest efficiency.

Zhu Dan: A New Cultivar of Styrax japonicus Siebold & Zuccarini

Breeding of a New Hippeastrum Hybridum 'Huan Die'

A New Hippeastrum Hybridum, 'Chun Jian Liu Dan'

Breeding of a New Hippeastrum Hybridum, 'Bi Yu'

Large patch (Rhizoctonia solani AG 2-2 LP) is a detrimental disease to warm-season turfgrasses, specifically zoysiagrass (Zoysia spp.). The epidemiology of the disease on zoysiagrass has not been widely studied and warrants further research. The objective of our study was to investigate the spatial and temporal dynamics of large patch and to highlight potential factors that affect the epidemiology of the disease.

Cannabis (Cannabis sativa) breeding would be enhanced by the ability to generate doubled haploids, which requires a reliable source of aseptic anthers. The impact of time in culture and the inclusion of metatopolin (MT) in the culture medium on in vitro flowering of microshoots was evaluated using a male, tetraploid photoperiod-sensitive genotype.