John Preece is a horticulture professor in the Department of Plant, Soil and Agricultural Systems at Southern Illinois University Carbondale (USA). He teaches courses in General Horticulture, Plant Propagation and Plant Growth and Development. He conducts research on various aspects of woody plant propagation. Along with his postgraduates, he was the first to publish micropropagation protocols for a number of woody species and the first to work out somatic embryogenesis and shoot morphogenesis of Fraxinus americana (white ash) and Juglans nigra (eastern black walnut).
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