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Journal Article 1997

Autor: Sanginga, N. Dashiell, Kenton E. Okogun, J.A. Thottappilly, G.

Attention is being paid to improving the N2 fixation of promiscuous nodulating soybeans in an attempt to develop sustainable cropping systems in the moist savanna. There is however a dearth of reliable estimates of N2 fixation by these promiscuous soybeans and hardly any quantitative information ...

Enlace original: https://cgspace.cgiar.org/handle/10568/98631

Investigación en Agricultura
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Sanginga, N. ,  Dashiell, Kenton E. ,  Okogun, J.A. ,  Thottappilly, G. ,  [Nitrogen fixation and N contribution by promiscuous nodulating soybeans in the southern Guinea savanna of Nigeria] ,  Nitrogen fixation and N contribution by promiscuous nodulating soybeans in the southern Guinea savanna of Nigeria
Journal Article 2000

Autor: Sanginga, P. Thottappilly, G. Dashiell, Kenton E.

The ability of soybean to nodulate with a wide range of indigenous bradyrhizobia has been used in a breeding programme since 1997 in Nigeria. As far as is known, these indigenous bradyrhizobia strains have not been tested for compatibility and effectiveness with recent selections from a breeding ...

Enlace original: https://cgspace.cgiar.org/handle/10568/99854

Investigación en Agricultura
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Sanginga, P. ,  Thottappilly, G. ,  Dashiell, Kenton E. ,  [Effectiveness of rhizobia nodulating recent promiscuous soyabean selections in the moist savanna of Nigeria] ,  Effectiveness of rhizobia nodulating recent promiscuous soyabean selections in the moist savanna of Nigeria
Journal Article 1992

Autor: Mesfin, T. Bosque Pérez, N.A. Buddenhagen, I.W. Thottappilly, G. Oloyede, S.O.

Maize streak geminivirus (MSV) isolates originating from maize, other cerealsand 18 grass species in Nigeria were characterized based on symptoms, transmission, host range and serological tests. All isolates could be transmitted to MSV-susceptible sweet corn cv. Golden Bantam using Cicadulina sto...

Enlace original: https://cgspace.cgiar.org/handle/10568/100020

Investigación en Agricultura
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Mesfin, T. ,  Bosque Pérez, N.A. ,  Buddenhagen, I.W. ,  Thottappilly, G. ,  Oloyede, S.O. ,  [Studies of maize streak virus isolates from grass and cereal hosts in Nigeria] ,  Studies of maize streak virus isolates from grass and cereal hosts in Nigeria
Journal Article 1992

Autor: Mesfin, T. Thottappilly, G. Singh, S.R.

The feeding activity of Aphis craccivora (Koch) was monitored on cowpea plants of aphid‐susceptible (Vita 7) and aphid‐resistant (TVu 801) cultivars, using an AC electronic feeding monitoring system. Waveforms corresponding to salivation, phloem ingestion and non‐phloem ingestion were observed. A...

Enlace original: https://cgspace.cgiar.org/handle/10568/100022

Investigación en Agricultura
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Mesfin, T. ,  Thottappilly, G. ,  Singh, S.R. ,  [Feeding behaviour of Aphids craccivora (Koch) on cowpea cultivars with different levels of aphid resistance] ,  Feeding behaviour of Aphids craccivora (Koch) on cowpea cultivars with different levels of aphid resistance
Journal Article 2000

Autor: Boxtel, J. van Singh, B. Thottappilly, G. Maule, A.

Virus diseases cause substantial yield reduction in cowpea ( Vigna unguiculata (L.) Walp) production in West and Central Africa. Improved cowpea cultivars have been developed and distributed to various national programs but these cultivars were tested only against local virus isolates. To identif...

Enlace original: https://cgspace.cgiar.org/handle/10568/100086

Investigación en Agricultura
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Boxtel, J. van ,  Singh, B. ,  Thottappilly, G. ,  Maule, A. ,  [Resistance of cowpea (Vigna unguiculata (L.) Walp.) breeding lines to blackeye cowpea mosaic and cowpea aphid borne mosaic potyvirus isolates under experimental conditions] ,  Resistance of cowpea (Vigna unguiculata (L.) Walp.) breeding lines to blackeye cowpea mosaic and cowpea aphid borne mosaic potyvirus isolates under experimental conditions
Journal Article 2000

Autor: Thottappilly, G. Mignouna, H. Omitogun, O.

Genetic engineering and biotechnology are providing new tools for genetic improvement of food crops. Molecular DNA markers are some of these tools which can be used in various fields of plant breeding and germplasm management. For example, molecular markers have used to confirm the identity of hy...

Enlace original: https://cgspace.cgiar.org/handle/10568/92636

Investigación en Agricultura
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Thottappilly, G. ,  Mignouna, H. ,  Omitogun, O. ,  [Use of DNA markers for rapid improvement of crops in Africa] ,  Use of DNA markers for rapid improvement of crops in Africa
Journal Article 2000

Autor: Dahal, G. Ortiz, R. Tenkouano, A. Hughes, J. Thottappilly, G. Vuylsteke, D.R. Lockhart, B.E.L.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/92652

Investigación en Agricultura
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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
Book 1998

Autor: Thottappilly, G. Rossel, H.

Huit virus ont ete signrues sur Ie niebe en Afrique. Les virus du niebe sont decrits pour les basses terres hum ides et subhumides de I'Afrique occidentale ainsi que pour les wnes ecologiques d'rutitude moyenne en Mrique orientale et australe. Chaque fois que les installations sont limitees et qu...

Enlace original: https://cgspace.cgiar.org/handle/10568/95922

Investigación en Agricultura
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Thottappilly, G. ,  Rossel, H. ,  [Les maladies virales du niebe en Afrique: Guide de recherche de lIita, No. 53] ,  Les maladies virales du niebe en Afrique: Guide de recherche de lIita, No. 53
Journal Article 1998

Autor: Dahal, G. Pasberg-Gauhl, C. Gauhl, F. Thottappilly, G. Hughes, J.

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/95945

Investigación en Agricultura
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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
Book 1998

Autor: Thottappilly, G. Rossel, H.W. Bosque Pérez, N.A.

Sept virus ont etil signales sur Ie ma'is en Afrique tropicale; toutefois, peu d'informations sont dis• ponibles sur ces virus. Le virus de La striure du mals est tres repandu en Afrique subsaharienne; d'autres virus Ie sont moins ou sont d'importance locale seulement. Des informations sur Les vi...

Enlace original: https://cgspace.cgiar.org/handle/10568/95890

Investigación en Agricultura
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Thottappilly, G. ,  Rossel, H.W. ,  Bosque Pérez, N.A. ,  [Les virus et les maladies virales du mais en Afrique tropicale] ,  Les virus et les maladies virales du mais en Afrique tropicale

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