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''Ascochyta'' is a genus of ascomycete fungi, containing several species that are pathogenic to plants, particularly cereal crops. The taxonomy of this genus is still incomplete. The genus was first described in 1830 by Marie-Anne Libert, who regarded the spores as minute asci and the cell contents as spherical spores.〔Ascochyta Leaf Spots of Cereals and Grasses in the United States. Roderick Sprague and A. G. Johnson. Mycologia, Vol. 42, No. 4 (Jul. - Aug., 1950), pp. 523-553〕 Numerous revisions to the members of the genus and its description were made for the next several years. Species that are plant pathogenic on cereals include, ''A. hordei, A. graminea, A. sorghi, A. tritici''. Symptoms are usually elliptical spots that are initially chlorotic and later become a necrotic brown. Management includes fungicide applications and sanitation of diseased plant tissue debris. Some of these pathogens in the genus ''Ascochyta'' affect grass species, including grains. == Some species of ''Ascochyta'' == *''Ascochyta asparagina'', Ascochyta blight. *''Ascochyta bohemica'' *''Ascochyta boltshauseri'' *''Ascochyta caricae'', Stem end rot. *''Ascochyta chrysanthemi'', Ray blight. *''Ascochyta doronici'' *''Ascochyta fabae'' f.sp. ''lentis'' *''Ascochyta graminea'' *''Ascochyta gossypii'', now ''Phoma exigua'' *''Ascochyta hordei'' *''Ascochyta humuli'' *''Ascochyta imperfecta'' *''Ascochyta pinodes'', Ascochyta blight. *''Ascochyta pisi'', Leaf and pod spot. *''Ascochyta prasadii'' *''Ascochyta rabiei'', blight on chickpeas. *''Ascochyta rhei'', Leaf spot. *''Ascochyta sorghi'', Sorghum rough leaf spot. *''Ascochyta sorghina'', Rough leaf spot. *''Ascochyta spinaciae'', Leaf spot. *''Ascochyta tarda'', Leaf blight. *''Ascochyta tritici'' *''Ascochyta vindobonensis'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ascochyta」の詳細全文を読む スポンサード リンク
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