Bean Yellow Mosaic Virus (BYMV)

FACTSHEETS FOR FARMERS Created in Bangladesh, September 2013 www.plantwise.org Bean Yellow Mosaic Virus (BYMV) Recognize the problem BYMV infected leaf. (Photo by Jeffrey W. Lotz, Florida Department Symptoms of Bean yellow mosaic virus (BYMV) may vary depending upon the of Agriculture and Consumer variety, the virus strain, the stage of growth at the time of infection, and Services (CC BY)) environmental factors. Symptoms include striking dark green mottling and downward cupping along the main vein of each leaflet. Green vein banding, blistering and leaf malformation represent an advanced stage of the virus. Affected pods can became rough and smaller in size with spots. Background Bean yellow mosaic virus (BYMV) is the most destructive disease of bean. It is a plant pathogenic virus in the genus Potyvirus. It is the most widespread bean virus in the country and can be found every year. The most common overwintering hosts include wild legumes, and certain flower crops such as Gladiolus. The virus is transmitted by a number of aphid species non- persistently as well as being transmitted mechanically and by seed. Management Leaf infested with aphids, the There is no cure for the virus so the only measure is prevention. The following vector of BYMV. (Photo by Daren Mueller, Iowa State University (CC measures for prevention could be taken to minimize the yield loss: BY)) • Use resistance varieties, e.g. BARI Sim-1, BARI Sim-2 • Seeds should be collected from healthy plants from a disease-free field • Keep the field free from weeds • Infected leaves must be collected and burned • In the case of seedlings, as soon as a few leaves are infected, the whole plant should be collected and burned immediately • Insecticides can be sprayed for vector control. Spray with imidacloprid (e.g. Imitaf) @ 1mL/L water or dimethoate 2mL/L water starting 20 days after transplanting and spraying at 15 day intervals When using a pesticide, always wear protective clothing and follow the instructions on the product label, such as dosage, timing of application, and pre-harvest interval. Scientific name(s) > Bean Yellow Mosaic Virus The recommendations in this factsheet are relevant to: Bangladesh Authors: M. Anwar Hossain, Zahidul Islam , Md. Rafiquzzaman SPIED Edited by Plantwise tel: 01717-072110, 01711-207380, 01823-035379 email: [email protected], [email protected] Plantwise is a global initiative led by CABI Lose Less, Feed More BD005En.

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Five Multiple-Virus-Resistant Common Bean Breeding Lines
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Genetic Interaction Between Phaseolus Vulgaris and Bean Common Mosaic Virus with Implications for Strain Identification and Breeding for Resistance Promotor: Dr.Ir
YY^ tol ^5<Y Genetic interaction betweenPhaseolu s vulgaris andbea ncommo n mosaic virus with implicationsfo r strain identification andbreedin gfo r resistance E. Drijfhout NN08201.734 Genetic interaction between Phaseolus vulgaris and bean common mosaic virus with implications for strain identification and breeding for resistance Promotor: dr.ir. J. Sneep, hoogleraar in de plantenveredeling Co-promotor: dr.ir. J.P.H,va n der Want, hoogleraar in de virologie E. Drijfhout Genetic interaction between Phaseolus vulgaris and bean common mosaic virus with implications for strain identification and breeding for resistance Proefschrift ter verkrijging van de graad van doctor in de landbouwwetenschappen, op gezagva n de rector magnificus, dr. H.C.va n derPlas , hoogleraar in de organische scheikunde, in het openbaar te verdedigen op woensdag 20 september 1978 des namiddags te vier uur in de aula van de Landbouwhogeschool te Wageningen Centrefor AgriculturalPublishing and Documentation Wageningen — 1978 Abstract DRIJFHOUT, E. (1978) Genetic interaction between Phaseolus vulgaris and bean com mon mosaic virus with implications for strain identification and breedingfo r resistance. Agric. Res. Rep. (Versl. landbouwk. Onderz.) 872, ISBN 90 220 0671 9, (vii) + 98 p., 14 figs, 42 tables, 72refs , 1app. , Eng.an dDutc hsummaries . Also:Doctora l thesis, Wageningen. Various strains of bean common mosaic virus (BCMV) occur in susceptible cultivars of bean. To compare these strains, a standard procedure for identification anda se t ofdif ferential cultivars were established. The differentials are representatives of 11 resistance groups, determined by testing of about45 0 beancultivar swit h 8 to 10strains .Th eviru s strains and isolates were classified into 10 pathogenicity groups and subgroups, so that 10strain swer e distinguished andth eother sconsidere d asisolate s of thosestrains .
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