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Urediniospores of 11 Milesina species. a Milesina blechni on Struthiopteris spicant b Milesina blechni on Struthiopteris spicant, cracked spore with released plasma, germ pores scattered c Milesina carpatica on Dryopteris filix-mas d Milesina exigua on Polystichum braunii, smooth surface e Milesina exigua on Polystichum braunii, smooth surface, plasma-free spore, germ pores bipolar f Milesina ...
The mycelium with uredinia looks yellow-orange and powdery, and appears on the underside of leaves as points ~0.1 mm in diameter. Young lesions appear as chlorotic or pale yellow spots some millimetres in diameter, the older being a few centimetres in diameter.
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This is a glossary of some of the terms used in phytopathology.. Phytopathology is the study of plant diseases. It is a multi-disciplinary science since prerequisites for disease development are the presence of a susceptible host species, a pathogen and the appropriate environmental conditions.
Puccinia menthae feeds on plants in the family Lamiaceae.Commonly, there are two groups of mint rust, spearmint rust and peppermint rust. [3] [4] The strain of P. menthae that infects peppermint is not able to infect spearmint plants and the strain that infects spearmint cannot infect peppermint, but both can infect Scotch spearmint. [5]
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Puccinia asparagi is the causative agent of asparagus rust.It is an autoecious fungus, meaning that all stages of its life cycle – pycniospores, aeciospores, and teliospores – all develop upon the same host plant [1] [2] [3]. [4]