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Differentiating Powdery Mildew from False Powdery Mildew
Journal of Industrial Hemp, 2008ABSTRACT This note continues the “Cannabis Clinic” series, presenting diseases and pests of hemp, featuring color illustrations of signs and symptoms. The fungus Trichothecium roseum produces a white fuzz that covers branches, leaves, and flowering tops of hemp.
John M. McPartland, Karl W. Hillig
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Mycologia, 1979
Throughout the temperate zones of the world, on many different kinds of plants, there occurs a whitish fungus growth of the powdery mildew fungi (Figs. 26-1,-3,-6). These fungi, which comprise the family Erysiphaceae, are all obligate parasites and all but a few are ectoparasites.
James W. Kimbrough, D. M. Spencer
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Throughout the temperate zones of the world, on many different kinds of plants, there occurs a whitish fungus growth of the powdery mildew fungi (Figs. 26-1,-3,-6). These fungi, which comprise the family Erysiphaceae, are all obligate parasites and all but a few are ectoparasites.
James W. Kimbrough, D. M. Spencer
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Plant Pathology, 1988
A powdery mildew ( Erysiphe sp.) occurred on greenhouse‐grown tomato crops in southern England in 1987. White pustules appeared on the upper surfaces of leaves of affected crops and only rarely on the under surfaces. In greenhouse experiments, stems were very severely affected.
J. T. FLETCHER +2 more
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A powdery mildew ( Erysiphe sp.) occurred on greenhouse‐grown tomato crops in southern England in 1987. White pustules appeared on the upper surfaces of leaves of affected crops and only rarely on the under surfaces. In greenhouse experiments, stems were very severely affected.
J. T. FLETCHER +2 more
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2019
Crucifers include very large group of oilseed Brassica species, and vegetable crops grown all over the world for quality vegetable oil and as vegetables apart from a source of fodder crops. The major oil yielding Brassica crops are: B. juncea (Mustard), B. napus (Rapeseed), B. carinata (Ethiopian mustard), B. rapa subsp.
Govind Singh Saharan +2 more
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Crucifers include very large group of oilseed Brassica species, and vegetable crops grown all over the world for quality vegetable oil and as vegetables apart from a source of fodder crops. The major oil yielding Brassica crops are: B. juncea (Mustard), B. napus (Rapeseed), B. carinata (Ethiopian mustard), B. rapa subsp.
Govind Singh Saharan +2 more
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2019
Powdery mildews were first recognized as white powdery appearance on the leaves of Humulus, Acer, Lamia, Galeopsis, and Lithospermum by plant pathogens infection as early as 1753 which was named as Mucor erysiphe. Initially powdery mildews were a fascinating subject of research for mycologists who reported several species of powdery mildews on ...
Govind Singh Saharan +2 more
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Powdery mildews were first recognized as white powdery appearance on the leaves of Humulus, Acer, Lamia, Galeopsis, and Lithospermum by plant pathogens infection as early as 1753 which was named as Mucor erysiphe. Initially powdery mildews were a fascinating subject of research for mycologists who reported several species of powdery mildews on ...
Govind Singh Saharan +2 more
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Powdery mildew-resistant mutants
Trends in Plant Science, 2000Four loci involved in powdery mildew resistance have been identified among 20 recessive Arabidopsis mutants. Resistance is not simply the result of constitutive activation of the salicylic acid- or ethylene- and jasmonic acid-dependent defense pathways. Results suggest that one mutation is of a specific resistance mechanism. Proc. Natl. Acad. Sci. U. S.
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2019
The powdery mildew of crucifers shows its symptoms on aerial parts of host plants in the form of white to dirty white circular floury patches on leaves, stems, inflorescence, and siliquae. These floury patches increase in size, and coalesce to cover entire aerial parts of the plant with the increase in atmospheric temperature.
Govind Singh Saharan +2 more
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The powdery mildew of crucifers shows its symptoms on aerial parts of host plants in the form of white to dirty white circular floury patches on leaves, stems, inflorescence, and siliquae. These floury patches increase in size, and coalesce to cover entire aerial parts of the plant with the increase in atmospheric temperature.
Govind Singh Saharan +2 more
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Mycologia, 1940
The fungus belongs to the genus Uncinula. No powdery mildew has ever been reported on this plant, and the fungus appears to be different from any that the writer has seen described. It is characterized by its exceedingly long appendages, four or five times as long as the diameter of the perithecium.
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The fungus belongs to the genus Uncinula. No powdery mildew has ever been reported on this plant, and the fungus appears to be different from any that the writer has seen described. It is characterized by its exceedingly long appendages, four or five times as long as the diameter of the perithecium.
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