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Dahal, G.Pasberg-Gauhl, C.Gauhl, F.Thottappilly, G.Hughes, J.[Intraplant variation in sympton expression and distribution of banana streak badnavirus in naturallyinfected plantain and banana ( Musa spp.)]Intraplant variation in sympton expression and distribution of banana streak badnavirus in naturallyinfected plantain and banana ( Musa spp.)

Between 1991 to 1996, more than 50 Musa hybrids and 10 landraces were evaluated under field and screenhouse conditions for virus symptoms resembling those caused by banana streak badnavirus (BSV). The symptoms included chlorotic streaks, leaf deformation, stunting, cigar leaf death, distortion of...


Dahal, G.Gauhl, F.Pasberg‐Gauhl, C.Hughes, J.D.A.Thottappilly, G.Lockhart, B.E.L.[Evaluation of micropropagated plantain and banana (Musa spp.) for banana streak badnavirus incidence under field and screenhouse conditions in Nigeria]Evaluation of micropropagated plantain and banana (Musa spp.) for banana streak badnavirus incidence under field and screenhouse conditions in Nigeria

Various virus‐like symptoms were recorded on field‐grown cowpea(Vigna unguiculataL. Walp) and pea(Pisum sativumL.) during 1989–1990 at the experimental farm of the Institute of Agriculture and Animal Sciences (IAAS), Rampur, Chitwan valley, in the central terai plains of Nepal. The causal agent(s...


Dahal, G.Albrechtsen, S.E.[Some studies on cowpea aphidborne mosaic and pea seedborne mosaic potyviruses in Nepal]Some studies on cowpea aphidborne mosaic and pea seedborne mosaic potyviruses in Nepal

Micropropagated plants of 36 Musa genotypes with diverse genetic backgrounds, including 14 tetraploid plantain (TMPx) and banana (TMBx) hybrids, were evaluated for their response to banana streak badnavirus (BSV) infection under three environments from 1995 to 1997 in Nigeria. The characteristics...


Dahal, G.Ortiz, R.Tenkouano, A.Hughes, J.Thottappilly, G.Vuylsteke, D.R.Lockhart, B.E.L.[Relationship between natural occurrence of banana streak badnavirus and symptom expression, relative concentration of viral antigen, and yield characteristics of some micropropagated Musa spp]Relationship between natural occurrence of banana streak badnavirus and symptom expression, relative concentration of viral antigen, and yield characteristics of some micropropagated Musa spp

Monitoring of banana streak badnavirus (BSV) antigens and symptoms in naturally BSV‐infected plantain and banana (Musa spp.) plants showed a great variation in symptom expression, distribution and relative concentration of BSV between and within plants. Expression and distribution of symptoms was...


Dahal, G.Pasberg-Gauhl, C.Gauhl, F.Thottappilly, G.Hughes, J.[Studies on a Nigerian isolate of banana streak badnavirus: II. Effect of intraplant variation on virus accumulation and reliability of diagnosis by ELISA]Studies on a Nigerian isolate of banana streak badnavirus: II. Effect of intraplant variation on virus accumulation and reliability of diagnosis by ELISA

The effect of temperature on symptom expression and detection of banana streak badnavirus (BSV) by immunosorbent electronmicroscopy (ISEM) and enzyme-linked immunosorbent assay of 12 in vitro-propagated plantain hybrids (genome AAB × AA), 3 ABB cooking banana, and 3 AAB plantain landraces was stu...


Dahal, G.Hughes, J.Thottappilly, G.Lockhart, B.E.L.[Effect of temperature on symptom expression and reliability of banana streak badnavirus detection in naturally infected plantain and banana (Musa spp.)]Effect of temperature on symptom expression and reliability of banana streak badnavirus detection in naturally infected plantain and banana (Musa spp.)

Streak disease of banana and plantain caused by banana streak virus (BSV) was first reported in the Ivory Coast in 1974 and occurs in at least 16 countries in Africa. Based on genomic characteristics, BSV has been shown to be a member of genus Badnavirus. Efficient and reliable diagnostic methods...


Dahal, G.Hughes, Jacqueline d'ArrosLockhart, B.E.L.[Status of banana streak disease in Africa: problems and future research needs]Status of banana streak disease in Africa: problems and future research needs

A survey of rice fields during the main growing seasons in 81 locations from 21 districts of the southern Terai region of Nepal indicated that rice tungro was primarily restricted to the Hardinath (Janakpur) and (Parwanipur (Bara) regions. The tungro incidence in Hardinath ranged from 17% to 51% ...


Dahal, G.Druka, A.Burns, T.M.Villegas, L.C.Fan, Z.Shrestha, R.B.Hull, R.[Some biological and genomic properties of rice tungro bacilliform badnavirus and rice tungro spherical waikavirus from Nepal]Some biological and genomic properties of rice tungro bacilliform badnavirus and rice tungro spherical waikavirus from Nepal

The DNA genomes of isolates of rice tungro bacilliform virus from Bangladesh, India, Indonesia, Malaysia and Thailand were cloned and compared with that of the type isolate from the Philippines. Restriction endonuclease maps revealed differences between the isolates and cross-hybridization showed...


Fan, Z.Dahal, G.Indranil Dasgupta, I.Joanne Hay, J.Hull, R.[Variation in the genome of rice tungro bacilliform virus: molecular characterization of six isolates]Variation in the genome of rice tungro bacilliform virus: molecular characterization of six isolates
Dahal, G.Hughes, J.Thottappilly, G.Lockhart, B.[Effect of temperature on sympton expression and detection of banana streak badnavirus in plantains and bananas]Effect of temperature on sympton expression and detection of banana streak badnavirus in plantains and bananas

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