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Evaluation of resistance to yam mosaic virus (YMV), genus Potyvirus in white yam (Dioscorea rotundata Poir.)

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Title Evaluation of resistance to yam mosaic virus (YMV), genus Potyvirus in white yam (Dioscorea rotundata Poir.)
 
Creator Odu, B.O.
Asiedu, R.
Hughes, J.
Shoyinka, S.A.
Oladiran, O.A.
 
Subject YAMS
MOSAIC VIRUSES
GENUS
POTYVIRUSES
DIOSCOREA ROTUNDATA
WHITE YAM
ELISA
 
Description Yam mosaic virus (YMV), genus Potyvirus; family Potyviridae is the most important virus infecting Dioscorea spp. in the tropics. It induces a variety of symptoms ranging from mild mosaic on leaves of infected plants to stunted growth. Field and laboratory studies were conducted in Nigeria to identify Dioscorea rotundata genotypes that are resistant to YMV. A total of 24 D. rotundata varieties were evaluated in the field under natural infection conditions at four locations in Nigeria during 1998 and 1999 planting seasons, and also in an insect-proof screenhouse using mechanical inoculation and vector transmission. The plants in the field were individually scored for virus symptom severity, while those in the screenhouse were indexed for YMV at 6, 8 and 10 weeks after inoculation by triple antibody sandwich enzyme-linked immunosorbent assay (TAS-ELISA). Analysis of the symptom severity scores showed highly significant differences (P
Peer Review
 
Date 2019-08-21T14:12:54Z
2019-08-21T14:12:54Z
2004
 
Type Journal Article
 
Identifier Odu, B.O., Asiedu, R., Hughes, J., Shoyinka, S.A. & Oladiran, O.A. (2004). Identification of resistance to Yam mosaic virus (YMV), genus Potyvirus in white Guinea yam (Dioscorea rotundata Poir.). Field Crops Research, 89(1), 97-105.
0378-4290
https://hdl.handle.net/10568/103307
 
Language en