Results 121 to 130 of about 1,437 (161)
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‘Morfeo’ Elm: a new variety resistant to Dutch elm disease
Forest Pathology, 2011SummaryDutch elm disease (DED) has spread through Europe and North America since the beginning of the twentieth century. In response, several independent genetic improvement programmes for breeding DED‐resistant elms have been established on both sides of the Atlantic.
Santini A, Pecori F, Pepori A, Brookes A
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A Dutch elm disease resistant triploid elm
Canadian Journal of Forest Research, 1994A naturally occurring triploid elm hybrid was found in the American elm, Ulmusamericana L., planting on the National Mall in Washington, D.C. Chromosome examinations of mitosis in root tips and meiosis in pollen mother cells showed a chromosome complement of 2n = 3x = 42.
James L. Sherald +4 more
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Health of elms and Dutch elm disease in Estonia
European Journal of Plant Pathology, 2019During three years, 2014–2016, Dutch elm disease (further DED) was investigated on 1225 elm trees at 4 different sampling sites and 2 sub-sites in Estonia. For the first time, both subspecies of the invasive pathogen Ophiostoma novo-ulmi: O. novo-ulmi subsp. novo-ulmi, and O. novo-ulmi subsp. americana, were detected by col1 and cu genes in Estonia and
Liina Jürisoo +3 more
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1979
The most well-known plant disease in the Eastern United States and Canada is the Dutch elm disease. It has laid waste to Main Street, U. S. A., and the countryside alike. Great groves of elm along our new superhighways stand stripped and bleached in the sun (frontispiece and Fig. 25-1 A).
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The most well-known plant disease in the Eastern United States and Canada is the Dutch elm disease. It has laid waste to Main Street, U. S. A., and the countryside alike. Great groves of elm along our new superhighways stand stripped and bleached in the sun (frontispiece and Fig. 25-1 A).
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Elm yellows and Dutch elm disease in Croatia
2015Elm yellows (EY) is a disease caused by phytoplasmas, non-helical, wall-less, unculturable bacteria of the class Mollicutes and provisional genus ‘Candidatus (Ca.) Phytoplasmaʼ. ‘Ca. Phytoplasma ulmi’ (16SrV-A subgroup) is predominantly infecting elms in Europe, although other phytoplasmas were occasionally detected as well.
Ćurković-Perica, Mirna +3 more
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Arboriculture & Urban Forestry, 1988
An aggregate of 82 American elms in Syracuse New York and Washington D.C. naturally infected with Dutch elm disease were given therapy by pruning infected limbs, injection of benzimizol fungicides, or combinations of these treatments. Pruning alone was applied only when there was a distance of 3 m or more from the last visible streak to the distal cut.
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An aggregate of 82 American elms in Syracuse New York and Washington D.C. naturally infected with Dutch elm disease were given therapy by pruning infected limbs, injection of benzimizol fungicides, or combinations of these treatments. Pruning alone was applied only when there was a distance of 3 m or more from the last visible streak to the distal cut.
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A review of Dutch elm disease and new prospects for Ulmus americana in the urban environment
Arboricultural Journal, 2023Forrest J Bowlick, Richard W Harper
exaly