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Journal Article 2011

Autor: Kagoda, F. Derera, J. Tongoona, P.B. Coyne, D.L. Lorenzen, J.H.

Nematodes cause substantial grain yield loss in susceptible maize (Zea mays L.) cultivars. This study was conducted to estimate general combining ability (GCA), specific combining ability (SCA) and genetic effects associated with nematode resistance in maize. The 30 F1 hybrids generated from a 6 ...

Enlace original: https://cgspace.cgiar.org/handle/10568/83294

Investigación en Agricultura
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Kagoda, F. ,  Derera, J. ,  Tongoona, P.B. ,  Coyne, D.L. ,  Lorenzen, J.H. ,  [Genetic analysis of resistance to nematodes in inbred maize (Zea mays L.) and maize hybrids] ,  Genetic analysis of resistance to nematodes in inbred maize (Zea mays L.) and maize hybrids
Journal Article 2019-04-16

Autor: Akaogu, I.C. Badu‐Apraku, B. Tongoona, P.B. Ceballos, H. Gracen, V. Offei, S.K. Dzidzienyo, D.

Striga hermonthica can cause as high as 100% yield loss in maize depending on soil fertility level, type of genotype, severity of infestation and climatic conditions. Understanding the mode of inheritance of Striga resistance in maize is crucial for introgression of resistance genes into tropical...

Enlace original: https://cgspace.cgiar.org/handle/10568/102122

Investigación en Agricultura
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Akaogu, I.C. ,  Badu‐Apraku, B. ,  Tongoona, P.B. ,  Ceballos, H. ,  Gracen, V. ,  Offei, S.K. ,  Dzidzienyo, D. ,  [Inheritance of Striga hermonthica adaptive traits in an earlymaturing white maize inbred line containing resistance genes from Zea diploperennis] ,  Inheritance of Striga hermonthica adaptive traits in an earlymaturing white maize inbred line containing resistance genes from Zea diploperennis
Journal Article 2010

Autor: Kagoda, F. Derera, J. Tongoona, P.B. Coyne, D.L.

In Uganda, nematodes have the potential to cause substantial yield losses, yet it is not known whether farmers have knowledge of the damage these pests cause. A participatory rural appraisal was therefore conducted to assess farmers' awareness of nematodes, and to determine the preferred traits i...

Enlace original: https://cgspace.cgiar.org/handle/10568/89352

Investigación en Agricultura
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Kagoda, F. ,  Derera, J. ,  Tongoona, P.B. ,  Coyne, D.L. ,  [Awareness of plant parasitic nematodes, and preferred maize varieties, among smallholder farmers in East and Southern Uganda: implications for assessing nematode resistance breeding needs in African maize] ,  Awareness of plant parasitic nematodes, and preferred maize varieties, among smallholder farmers in East and Southern Uganda: implications for assessing nematode resistance breeding needs in African maize
Journal Article 2019-12

Autor: Afuape, S.O. Tongoona, P.B. Asante, I.K. Egesi, Chiedozie N. Nwaigwe, G. Offei, S.K.

This study was embarked upon to stack two key but inversely associated sweetpotato traits (dry matter and beta-carotene content) through conventional breeding methods. Thirty-seven elite sweetpotato genotypes were evaluated for both traits, and 15 parents comprising five orange-, five yellow- and...

Enlace original: https://cgspace.cgiar.org/handle/10568/106673

Investigación en Agricultura
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Afuape, S.O. ,  Tongoona, P.B. ,  Asante, I.K. ,  Egesi, Chiedozie N. ,  Nwaigwe, G. ,  Offei, S.K. ,  [Breeding new sweetpotato genotypes combining elevated content of two antagonistic traits of high dry matter and beta-carotene content in a high root yield background] ,  Breeding new sweetpotato genotypes combining elevated content of two antagonistic traits of high dry matter and beta-carotene content in a high root yield background
Journal Article 2018-06-27

Autor: Norman, P.E. Asfaw, A. Tongoona, P.B. Danquah, A. Danquah, E.Y. Koeyer, D. de Asiedu, Robert

Controlled pollination in root and tuber crops is challenging. Complex ploidy, cross-incompatibility, erratic flowering patterns, outcrossing, etc., limit the efficiency of breeding progress in these crops. Half-sib breeding that involves random pollination among parents is a viable method to har...

Enlace original: https://cgspace.cgiar.org/handle/10568/96137

Investigación en Agricultura
DNA
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Norman, P.E. ,  Asfaw, A. ,  Tongoona, P.B. ,  Danquah, A. ,  Danquah, E.Y. ,  Koeyer, D. de ,  Asiedu, Robert ,  [Can parentage analysis facilitate breeding activities in root and tuber crops?] ,  Can parentage analysis facilitate breeding activities in root and tuber crops?
Journal Article 2018

Autor: Norman, P.E. Asfaw, A. Tongoona, P.B. Danquah, A.O. Danquah, E.Y. Koeyer, D. de Asiedu, Robert

Breeding yams is a two-step process that combines sexual and asexual reproduction. Sexual reproduction involving a transfer of pollen from male to female genotype reproductive organ is a key step to generate variability in yam improvement. The efficacy of genetic improvement therefore depends on ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92992

Investigación en Agricultura
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Norman, P.E. ,  Asfaw, A. ,  Tongoona, P.B. ,  Danquah, A.O. ,  Danquah, E.Y. ,  Koeyer, D. de ,  Asiedu, Robert ,  [Pollination success in some white yam genotypes under polycross and nested mating designs] ,  Pollination success in some white yam genotypes under polycross and nested mating designs
Journal Article 2018-08-04

Autor: Anyaoha, C. Fofana, M. Gracen, V. Tongoona, P.B. Blay, E. Semon, M. Popoola, B.

The goal of most rice improvement programs is the enhancement of farmers' yield using less land and limited water. This study evaluated 77 upland rice genotypes under optimal upland growing conditions in the field and ranked the genotypes using base indices. Subsequently, eighteen cultivars selec...

Enlace original: https://cgspace.cgiar.org/handle/10568/102069

Investigación en Agricultura
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Anyaoha, C. ,  Fofana, M. ,  Gracen, V. ,  Tongoona, P.B. ,  Blay, E. ,  Semon, M. ,  Popoola, B. ,  [Yield potential of upland rice varieties under reproductive-stage drought and optimal water regimes in Nigeria] ,  Yield potential of upland rice varieties under reproductive-stage drought and optimal water regimes in Nigeria
Journal Article 2017

Autor: Sobda, G. Boukar, O. Tongoona, P.B. Ayertey, J. Offei, K.S.

Cowpea flower bud thrips causes about 80% yield losses in cowpea. Host plant resistance is the most easy and durable solution to the damaging effects caused by this insect. However, resistance to thrips is quantitatively inherited, thus less amenable through conventional breeding. The objective o...

Enlace original: https://cgspace.cgiar.org/handle/10568/89954

Investigación en Agricultura
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Sobda, G. ,  Boukar, O. ,  Tongoona, P.B. ,  Ayertey, J. ,  Offei, K.S. ,  [Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)] ,  Quantitative trait loci (QTL) for cowpea resistance to flower bud thrips (Megalurothrips sjostedti Trybom)
Journal Article 2019-04

Autor: Doumbia, I.Z. Boukar, O. Touré, M. Tamò, M. Salle Tignegre, J.B. de la Fatokun, C. Togola, A. Tongoona, P.B. Ayertey, J.N.

Flower bud thrips (Megalurothrips sjostedti) is one of the most damaging pests to cowpea in Africa and varietal resistance is one of the effective approaches to minimize the pest damage. Study was conducted to assess variability among 117 genotypes in addition to two resistant (Sanzisabinli and T...

Enlace original: https://cgspace.cgiar.org/handle/10568/101303

Investigación en Agricultura
Enlace permanente

Doumbia, I.Z. ,  Boukar, O. ,  Touré, M. ,  Tamò, M. ,  Salle Tignegre, J.B. de la ,  Fatokun, C. ,  Togola, A. ,  Tongoona, P.B. ,  Ayertey, J.N. ,  [Evaluation of cowpea accessions for resistance to flower bud thrips (Megalurothrips sjostedti) in Mali] ,  Evaluation of cowpea accessions for resistance to flower bud thrips (Megalurothrips sjostedti) in Mali

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