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List Of Pear Diseases
The following is a list of diseases of pears (''Pyrus communis''). Bacterial diseases Fungal diseases Miscellaneous diseases and disorders Nematodes, parasitic Viruslike diseases ReferencesCommon Names of Diseases, The American Phytopathological Society {{pyrus Pear Pears are fruits produced and consumed around the world, growing on a tree and harvested in late summer into mid-autumn. The pear tree and shrub are a species of genus ''Pyrus'' , in the Family (biology), family Rosaceae, bearing the Pome, po ... * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pear
Pears are fruits produced and consumed around the world, growing on a tree and harvested in late summer into mid-autumn. The pear tree and shrub are a species of genus ''Pyrus'' , in the Family (biology), family Rosaceae, bearing the Pome, pomaceous fruit of the same name. Several species of pears are valued for their edible fruit and juices, while others are cultivated as trees. The tree is medium-sized and native to coastal and mildly temperate regions of Europe, North Africa, and Asia. Pear wood is one of the preferred materials in the manufacture of high-quality woodwind instruments and furniture. About 3,000 known varieties of pears are grown worldwide, which vary in both shape and taste. The fruit is consumed fresh, canning, canned, as juice, Dried fruit, dried, or fermented as perry. Etymology The word ''pear'' is probably from Germanic ''pera'' as a loanword of Vulgar Latin ''pira'', the plural of ''pirum'', akin to Greek ''apios'' (from Mycenaean ''ápisos''), of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coniothecium Chomatosporum
''Coniothecium chomatosporum'' is an ascomycete fungus that is a plant pathogen. It is found on plants of the genus ''Malus'' and ''Pyrus Pears are fruits produced and consumed around the world, growing on a tree and harvested in late summer into mid-autumn. The pear tree and shrub are a species of genus ''Pyrus'' , in the family Rosaceae, bearing the pomaceous fruit of the sa ...''. References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases Enigmatic Ascomycota taxa Fungi described in 1837 Fungus species {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botryosphaeria Stevensii
''Botryosphaeria stevensii'' (''Apple sphaeropsis'') is a fungal plant pathogen that causes cankers on several tree species including apple and juniper as well as causing cankers on grape vines. It causes branch dieback, possibly affecting a large portion of the tree canopy, and if severe it can kill entire plants. It was originally found on fallen fruit of ''Malus pumila'' in Great Britain and published and described by Berk as ''Sphaeropsis malorum'' in 1836 . With the epithet 'malorum' derived from the Latin for Apple. It is first seen as multiple very small, black pimples or pustules under the fruit skin before they break through the covering. Then a black conical protuberance appears, which is the spore-case of the fungus. Then a cluster of pale spores appears, on a short stem or pedicel. Later they turn black or black/brown and break off the pedicels. The spores then leave the spore-case by a small aperture at the top of the case. Infections can occur in winter or spring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosellinia Necatrix
''Rosellinia'' is a genus of fungi in the family Xylariaceae consisting of over 90 species. Several of the species in this genus are plant pathogens. Fossils of ''Rosellinia'' have been found in 12 million year old rocks from central England. The genus was circumscribed by Giuseppe De Notaris in Giorn. Bot. Ital. vol.1 (Issue 1) on page 334 in 1844. The genus name of ''Rosellinia'' is in honour of Ferdinando Pio Rosellini (1814–1872), who was an Italian mathematician and botanist Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s .... Species This is a complete listing of all currently accepted species in ''Rosellinia'', based on the 2005 study by Petrini and Petrini. '' R. abscondita'' — '' R. aquila'' — '' R. arcuata'' — '' R. asperata'' — '' R.&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coprinopsis Psychromorbida
''Coprinopsis psychromorbida'' or cottony snow mold is a cause of snow mold. It is a basidiomycete, a psychrophile, and a plant pathogen. Physiology ''C. psychromorbida'' can thrive at least down to , optimally , and ceases growth at . Hosts Grows as a snow mold in wheat, rye, and other grasses (Poaceae) and can also cause storage rotting in apple and pear Pears are fruits produced and consumed around the world, growing on a tree and harvested in late summer into mid-autumn. The pear tree and shrub are a species of genus ''Pyrus'' , in the Family (biology), family Rosaceae, bearing the Pome, po .... References Fungi described in 1981 Fungal plant pathogens and diseases Wheat diseases Rye diseases Pear tree diseases psychromorbida Fungus species {{Psathyrellaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clitocybe Tabescens
''Armillaria tabescens'' (also known as ringless honey mushroom) is a species of fungus in the family Physalacriaceae. It is a plant pathogen. The mycelium of the fungus is bioluminescent. Hosts and symptoms ''Armillaria'' species infect a wide variety of woody plants. In a survey of 250 permanent plots of trees in Albania, ''Armillaria tabescens'' affected multiple species of trees including fir species, where it invaded when the plant was stressed. A study in Greece reported ''Armillaria tabescens'' to be more prevalent in areas where the trees were stressed due to limited moisture. In oak trees, it was slightly more damaging and could kill young trees. ''Armillaria tabescens'' was also recorded in poplar and eucalyptus plantations, and almond trees were found to be very susceptible to infection. The results of the study by Lushaj et al. showed that ''Armillaria tabescens'' was most frequently recorded on fruit and ornamental trees compared to the other species''.'' ''Arm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycosphaerella Tassiana
''Davidiella tassiana'' is a fungal plant pathogen infecting several hosts, including '' Iris barnumiae subsp. demawendica'' in Iran. Infected plant species ''Davidiella tassiana'' has a wide range of host species. These include:Helgi Hallgrímsson & Guðríður Gyða Eyjólfsdóttir (2004)''Íslenskt sveppatal I - smásveppir'' [Checklist of Icelandic Fungi I - Microfungi Fjölrit Náttúrufræðistofnunar. Náttúrufræðistofnun Íslands [Icelandic Institute of Natural History]. ISSN 1027-832X *''Agrostis canina'' *''Agrostis stolonifera'' *''Anthoxanthum odoratum'' *''Arabis petraea'' *''Bistorta vivipara'' *''Carex bigelowii'' *''Carex capitata'' *''Draba incana'' *'' Draba nivalis'' *''Deschampsia caespitosa'' *'' Epilobium latifolium'' *'' Galium normanii'' *''Gentianella amarella'' ssp. ''septentrionalis'' *''Hierochloe odorata'' *'' Juncus alpinus'' *''Juncus articulatus'' *''Juncus triglumis'' *''Luzula arcuata'' *''Poa alpina'' *'' Poa glauca'' *''Poa nemoralis'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladosporium Herbarum
''Cladosporium herbarum'' is a common fungus found worldwide in organic and inorganic matter. It is efficiently distributed in the air, where it exists as the most frequently occurring fungal species. It can grow over a wide range of temperatures including very cold environments, giving it the ability to grow on refrigerated meat and form "black spots". Its high prevalence in the air and production of allergens makes ''C. herbarum'' an important exacerbant of asthma and hay fever. Prevalence ''Cladosporium herbarum'' is the type species of the genus ''Cladosporium''. Its spores are highly prevalent in the air; the genus ''Cladosporium'' is the dominant genus of spores found in the air, with the ''C. herbarum'' species contributing the highest percentage to this group. These airborne spores are more common during the summer and fall seasons; in the summer there can be as many as 15,000 spores per m3 air of ''C. herbarum''. ''Cladosporium herbarum'' is also found all over the worl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monilinia Laxa
''Monilinia laxa'' is a plant pathogen that is the causal agent of brown rot of stone fruit In botany, a drupe (or stone fruit) is a type of fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pip'' (UK), ''pit'' (US), ''stone'', or ''pyrena'') of hardened endocarp with a seed ...s. Disease cycle ''Monilinia laxa'' is an ascomycete fungus that is responsible for the brown rot blossom blight disease that infects many different types of stone fruit trees, such as apricots, cherries and peaches. It can also occasionally affect some pome fruits; for example, apples and pears. The pathogen overwinters on infected plant parts, particularly on infected twigs, branches, old flower parts or mummified fruits. In spring, the pathogen produces asexual conidia on the aforementioned infected plant debris. In addition, apothecia, which are small, open cup, mushroom-like sexual propagative structures of ''M. laxa'' that produce asc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monilinia Fructicola
''Monilinia fructicola'' is a species of fungus in the order Helotiales. A plant pathogen, it is the causal agent of brown rot of stone fruits. Stone fruit (summer fruit) Stone fruits such as apricot and peaches originated in China and spread through old trade routes 3–4000 years ago. Nectarines are more recent (at least 2000 years). Cherries and European plums originated in Europe, although the Japanese plum originated in China.Whiting. J. R. (n.d.). Science behind your garden. Retrieved October 27, 2007, from http://www.gardenscience.co.nz Trees exposed to cold in autumn and early spring can develop cankers under the bark of the trunk or branches. Cankers are usually associated with the production of amber-coloured gum that contains bacteria and oozes on to the outer bark. Unfortunately, there are few control methods for fungal spores apart from copper sprays. Symptoms Brown rot causes blossom blight, twig blight; twig canker and fruit rot.Ministry of Agriculture. (2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
