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Journal Article 1994

Breeding of cassava for low cyanogenic potential: problems, progress and prospects

Autor: Dixon, A. Asiedu, Robert Bokanga, M.

The starchy staples of cassava (tuberous roots) provides more than half the calories consumed by more than 200 million people in sub-Saharan Africa, and the leaves are often used as a vegetable providing protein, vitamins and minerals. The cyanogenic potential of cassava has often been cited as a...

Enlace original: https://cgspace.cgiar.org/handle/10568/100934

Investigación en Agricultura

CASSAVA

GENOTYPES

BREEDING

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Dixon, A. , Asiedu, Robert , Bokanga, M. , [Breeding of cassava for low cyanogenic potential: problems, progress and prospects] , Breeding of cassava for low cyanogenic potential: problems, progress and prospects

Journal Article 2009

A standardized RNA isolation protocol for yam (Dioscorea alata L) cDNA library construction

Autor: Narina, S.S. Mohammed, I. Asiedu, Robert Mignouna, H.D.

For the purpose of constructing yam cDNA libraries, attempts to isolate high quality RNA using several previously reported protocols were unsuccessful. Therefore a protocol was standardized for yam total RNA isolation by using guanidium buffer at the Department of Biology, Virginia Sate Universit...

Enlace original: https://cgspace.cgiar.org/handle/10568/90739

Investigación en Agricultura

YAMS

GENOTYPES

COLLETOTRICHUM GLOEOSPORIOIDES

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Narina, S.S. , Mohammed, I. , Asiedu, Robert , Mignouna, H.D. , [A standardized RNA isolation protocol for yam (Dioscorea alata L) cDNA library construction] , A standardized RNA isolation protocol for yam (Dioscorea alata L) cDNA library construction

Journal Article 2008

Sustainable yam production in Ghana The nonstaking option

Autor: Otoo, E. Anchirinah, V.M. Ennin, S.A. Asiedu, Robert

A trial was conducted on-station with farmer participation at Fumesua (Forest zone), Wenchi (Forest-Savannah transition zone) and Bodwease (Coastal Savannah zone) from 2000 to 2003 and on-farm during 2002-2003. Two factors, staking and species, with two levels each were assessed using the Augment...

Enlace original: https://cgspace.cgiar.org/handle/10568/90919

Investigación en Agricultura

STAKING

SUSTAINABLE

YAMS

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Otoo, E. , Anchirinah, V.M. , Ennin, S.A. , Asiedu, Robert , [Sustainable yam production in Ghana The nonstaking option] , Sustainable yam production in Ghana The nonstaking option

Journal Article 2005

Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria

Autor: Egesi, Chiedozie N. Ogunyemi, S. Asiedu, Robert

A randomised complete block experiment was conducted in the 1998 and 1999 cropping seasons in five major yam growing areas in the yam belt of Nigeria to evaluate the performance and yield stability of six genotypes of water yarn (Dioscorea alata L). Location, genotype and their interaction effect...

Enlace original: https://cgspace.cgiar.org/handle/10568/91791

Investigación en Agricultura

DIOSCOREA ALATA

ENVIRONMENT

GENOTYPES

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Egesi, Chiedozie N. , Ogunyemi, S. , Asiedu, Robert , [Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria] , Genotype x environment interaction in water yam (Dioscorea alata) yield trials in five yamgrowing sites in Nigeria

Journal Article 2006

Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria

Autor: Odu, B.O. Asiedu, Robert Shoyinka, S.A. Hughes, J.A.

Studies were made to identify sources of resistance to yam viruses in Dioscorea alata. Forty genotypes of D. alata were evaluated in both the field and in the screenhouse for reactions to the yam viruses: Yam mosaic virus (YMV), genus Potyvirus; Dioscorea alata virus (DAV), genus Potyvirus; Cucum...

Enlace original: https://cgspace.cgiar.org/handle/10568/91349

Investigación en Agricultura

DIOSCOREA ALATA

GENOTYPES

YAM MOSAIC VIRUS

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Odu, B.O. , Asiedu, Robert , Shoyinka, S.A. , Hughes, J.A. , [Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria] , Screening of water yam (Dioscorea alata L.) genotypes for reactions to viruses in Nigeria

Journal Article 1997

Effect of African cassava mosaic disease on growth and yield components of virustested cassava genotypes derived from meristem culture in early and late planting periods in three agroecologies of Nigeria

Autor: Akano, A.O. Atiri, G. Ng, S.Y.C. Asiedu, Robert

Enlace original: https://cgspace.cgiar.org/handle/10568/103831

Investigación en Agricultura

CASSAVA

MOSAIC VIRUSES

DISEASES

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Akano, A.O. , Atiri, G. , Ng, S.Y.C. , Asiedu, Robert , [Effect of African cassava mosaic disease on growth and yield components of virustested cassava genotypes derived from meristem culture in early and late planting periods in three agroecologies of Nigeria] , Effect of African cassava mosaic disease on growth and yield components of virustested cassava genotypes derived from meristem culture in early and late planting periods in three agroecologies of Nigeria

Journal Article 2006

Cultivar evaluation and megaenvironment investigation of Dioscorea cayenensis cultivars in Ghana based on the GGE Biplot analysis

Autor: Otoo, E. Asiedu, Robert

Cultivar evaluation and mega-environment identification are the most important objectives of multi-environment trials (MET). The objective of this study was to assess the effect of genotype and genotype x environment interaction on the tuber yield of 18 yellow yam (D. cayenensis L.) genotypes via...

Enlace original: https://cgspace.cgiar.org/handle/10568/91352

Investigación en Agricultura

GENOTYPES

MEGA-ENVIRONMENT

FUMESUA

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Otoo, E. , Asiedu, Robert , [Cultivar evaluation and megaenvironment investigation of Dioscorea cayenensis cultivars in Ghana based on the GGE Biplot analysis] , Cultivar evaluation and megaenvironment investigation of Dioscorea cayenensis cultivars in Ghana based on the GGE Biplot analysis

Journal Article 2006

Stability studies of hybrid yam (Dioscorea rotundata Poir.) genotypes in Ghana

Autor: Otoo, E. Okonkwo, C. Asiedu, Robert

Seven white yam (Dioscorea rotundata Poir.) genotypes (1 local and 6 hybrids from IITA) were evaluated in 13 environments using randomized complete block design (RCBD) with 3 replications. The environments were Fumesua (forest) from 2000 to 2004 and Wenchi (forest Guinea savannah transition) from...

Enlace original: https://cgspace.cgiar.org/handle/10568/91751

Investigación en Agricultura

AMMI1

G X E

HYBRID

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Otoo, E. , Okonkwo, C. , Asiedu, Robert , [Stability studies of hybrid yam (Dioscorea rotundata Poir.) genotypes in Ghana] , Stability studies of hybrid yam (Dioscorea rotundata Poir.) genotypes in Ghana

Journal Article 2007

Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)

Autor: Kikuno, H. Matsumoto, R. Shiwachi, H. Asiedu, Robert

Enlace original: https://cgspace.cgiar.org/handle/10568/93014

Investigación en Agricultura

SUCROSE

PLANTLETS

CUTTING

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Kikuno, H. , Matsumoto, R. , Shiwachi, H. , Asiedu, Robert , [Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)] , Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.)