leaf roll disease

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• leaf roll — noun 1. a. : any of various plant diseases characterized by an upward rolling of the leaf margins b. : a virus disease of the potato characterized by an upward rolling of the leaf margins, smaller tubers, and netlike necrotic areas in the phloem… …   Useful english dictionary

• leaf roll — noun Date: 1916 any of various plant diseases characterized especially by an upward rolling of the leaf margins; especially a disease of the potato caused by a single stranded RNA virus (species Potato leafroll virus of the genus Polerovirus,… …   New Collegiate Dictionary

• leaf roll — Plant Pathol. a viral disease of plants, esp. potatoes, characterized by upward rolling of the leaflets, chlorosis, stunting, and necrosis of the phloem. [1925 30] * * * …   Universalium

• leaf roll — noun a virus disease of potatoes marked by upward curling of the leaves …   English new terms dictionary

• Cherry leaf roll virus — (CLRV) Virus classification Group: IV: (+)sense RNA Viruses Family: Comovirinae Genus: Nepovirus …   Wikipedia

• Potato leaf roll virus — Taxobox virus group = iv familia = Luteoviridae genus = Polerovirus Potato leaf roll virus (PLRV) is part of the genus Polerovirus and family Luteoviridae . This virus like the name suggests infects potatoes and is a particular problem in the… …   Wikipedia

• yellow leaf roll — noun : a virus disease of peaches especially in California characterized by yellowing and upward rolling of the leaf, some scorching on the leaf margins and necrotic spotting, and early dropping of the leaves …   Useful english dictionary

• leaf curl — noun : a plant disease characterized by curling of leaves: as a. : a disease of peaches caused by a fungus (Taphrina deformans) b. : leaf roll c. : a virus disease of raspberries called also raspberry curl …   Useful english dictionary

• Plant disease symptoms — ▪ Table Plant disease symptoms description and causes examples prenecrotic symptom expression that precedes the death of cells or the disintegration of tissues water soaking a water soaked, translucent condition of tissues caused by water moving… …   Universalium

• virus disease — noun 1. : a disease caused by a filterable virus (as leaf roll, foot and mouth disease, poliomyelitis, the common cold, influenza) 2. : virosis * * * virus disease noun …   Useful english dictionary

• Maple Leaf Rag — First edition cover of Maple Leaf Rag . The Maple Leaf Rag (copyright registered 18 September 1899)[1] is an early ragtime musical composition for piano composed by Scott Joplin. It was one of Joplin s early works, and is one of th …   Wikipedia