Titles (124)Keywords (1)Notes (3)Abstracts (2)
A biliography of yams and the genus Dioscorea : 1975-1983, Lawani, S. M., Umoh, J. S. and Odubanjo, M.O., 1985.
 
An overview of viruses infecting Dioscorea yams in sub-Saharan Africa, Kenyon, L., Shoyinka, S.*, Hughes, J. and Odu, B., in: Plant virology in sub-Saharan Africa: proceedings of a conference organized by IITA, 4-8 June 2001, pages 432-439, International Institute of Tropical Agriculture (IITA), 2003.
 
Analysis of genetic diversity in Guinea yams (Dioscorea spp.) using AFLP fingerprinting, Mignouna, H., Ellis, N. T. H., Knox, M. R., Asiedu, R. and Ng, Q. N., in: Tropical Agriculture (Trinidad), volume 75, pages 224-229, 1998.
 
Antagonistic microorganisms against postharvest rot pathogens in cassava and yams, Kumar, M., Okechukwu, R., Mwangi, M.* and Bandyopadhyay, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Antagonistic microorganisms against postharvest rot pathogens in cassava and yams, Manjula, K., Richardson, O., Maina, M.* and Bandyopadhyay, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Anthracnose disease of yams in West Africa: recent advances in research and future perspectives, Abang, M., Asiedu, R., Mignouna, H., Green, K., Wolf, G. and Winter, S., in: Root Crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 562-571, 2003.
 
Bacterial tuber root of seed yams (Dioscorea rotundata) in Nigeria and the Republic of Benin, Ayodele, M., Hughes, J. and Asiedu, R., in: Abstract of the Eighth Triennal Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB) 12-16 Nov, Ibadan, Nigeria, 2001.
 
Bacterial tuber rot of seed yams (Dioscorea rotundata) in Nigeria and the Republic of Benin, Ayodele, M., Hughes, J. and Asiedu, R., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 597-602, 2003.
 
Bibliography of yams and the genus dioscorea, Lawani, S. M. and Odubanjo, M.O., 1976.
 
Biotechnology in germplasm management of cassava and yams: in plant conservation biotechnology, Ng, S. Y. C., Mantell, S. H. and Ng, N. Q., pages 179-209, Taylor and Francis, 1999.
 
Careful storage of yams, Wilson, J. E., 1979.
 
Carotenoid profiling of yams: Clarity, comparisons and diversity, Price, E. J., Bhattacharjee, R., Lopez-Montes, A. and Fraser, P. D., in: Food Chemistry, volume 259, pages 130-138, ISSN 0308-8146, 2018. [DOI]
 
Characterization of the photosynthetic pathway of some tropical food yams (Dioscorea spp.) using leaf natural 13C abundance, Cornet, D., Sierra, J. and Bonhomme, R., in: Photosynthetica, volume 45, number 2, pages 303-305, 2007.
 
Clean planting materials and management practices for sustained production of yams (Dioscroea spp): the futrue of yam cultivation in West Africa, Okonkwo, C., Asiedu, R. and Akoroda, M. O.*, in: Root and tuber crops for poverty alleviation through science and technology for sustainable development: proceedings of the 10th symposium of ISTRC-AB held from 8-12 October, 2007 in Maputo, Mozambique, pages 215-216, ISTRC-AB, 2010.
 
Comparative effects of explants sources and age of plant on rooting, shooting and tuber formation of vine cuttings of yams (Dioscorea spp.), Kikuno, H ., Matsumoto, R., Shiwachi, H ., Toyohara, H. and Asiedu, R., in: Japanese Journal of Tropical Agriculture, volume 51, number Extra issue 2, pages 71-72, 2007.
 
Cowpea, Lima bean, Cassava Yams and Meloidogyne spp. in Nigeria, Caveness, F. E., pages 295-300, Academic Press, ISBN ISBN 0-12-434850-5, 1979.
 
Cowpea, lima bean, cassava, yams and Meloidogyne spp. in Nigeria, Caveness, F. E., pages 295-300, Academic Press, London, New York, ISBN 0-12-434850-5, 1978.
 
Crops that feed the world 1. Yams: yams for income and food security, Asiedu, R. and Sartie, A. M., in: Food Security, volume 2, number 4, pages 305-315, ISSN 1876-4517, 2010. [DOI]
 
Culturing meristematic tissue and node cuttings from yams (Dioscorea), Mignouna, H. D.*, Abang, M. M., Asiedu, R. and Geeta, R., in: Cold Spring Harbor Protocols, volume 4, number 11, ISSN 1559-6095, 2009. [DOI]
 
Cytological and molecular characterization for ploidy determination in yams (Dioscorea spp.), Gatarira, C., Sladekova, L., Nemeckova, A., Simonikova, D., Paliwal, R., Asfaw, A., Abberton, M., Gueye, B., Asiedu, R., Cizkova, J., Hřibová, E., Doležel, J., De Koeyer, D ., Adetimirin, V.* and Bhattacharjee, R., in: Agronomy, volume 11, number 10: 1897, pages 1-13, ISSN 2073-4395, 2021. [DOI]
 
Dead skin on yams (Dioscorea alata) caused by Colletotrichum gloeosporioides, Green, K. and Simons, S. A., in: Plant Pathology, volume 43, number 6, pages 1062-1065, ISSN Online: 1365-3059, 1994.
 
Determining photosynthetic efficiency, canopy dynamics and productivity of seed yams derived from minisetts of white Guinea yams (Dioscorea rotundata Poir), Aighewi, B. and Ekanayake, I. J., in: Book of Abstracts of the Fifth Biennial Conference of the African Crop Science Society, 21-26 Oct, Lagos, Nigeria, pages 63, 2001.
 
Development and evaluation of hybrid yams (Dioscorea rotundata Poir.) in pre-release multilocational trials in Nigeria, Orkwor, G. C., Asiedu, R., Hahn, S. K., Surma, D., Udensi, U. and Chukwu, G. O., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 353-355, 2003.
 
Development of mapping populations for genetic analysis in yams (D. rotundata and D. alata), Sartie, A. M. and Asiedu, R., in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes. Proceedings of the 11th triennial Symposium of the ISTRC-AB, 4 to 8 October 2010, pages 101-111, ISTRC-AB, Ibadan, Nigeria, 2012.
 
Development of mapping populations for genetic analysis in yams (Dioscorea rotundata and D. alata), Sartie, A. M. and Asiedu, R., Abstract (Oral presentation) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Development of mapping populations for genetic analysis in yams (Dioscorea rotundata Poir. and Dioscorea alata L.), Sartie, A. M. and Asiedu, R., in: African Journal of Biotechnology, volume 10, number 16, pages 3040-3050, ISSN 1684-5315, 2011.
 
Distribution and diversity of viruses infecting yams (Dioscorea spp.) in Cameroon, Azeteh, I. N., Hanna, R., Njukeng, A. P.*, Oresanya, A., Sakwe, P. N.* and Kumar, P. L., in: VirusDisease, pages 1-12, ISSN 2347-3584, 2019. [DOI]
 
Diversity, trait preferences, management and utilization of yams landraces (Dioscorea species): an orphan crop in DR Congo, Adejumobi, I. I., Agre, A. P., Onautshu, O. D.*, Adheka, J. G.*, Bambanota, M. G.*, Monzenga, J. C. L., Komoy, J.* and Cipriano, I. M.*, in: Scientific Reports, volume 12, number -: 2252, pages 1-16, ISSN 2045-2322, 2022. [DOI]
 
DNA barcoding of the main cultivated yams and selected wild species in the genus Dioscorea, Girma Tessema, G., Spillane, C. and Gedil, M., in: Journal of Systematics and Evolution, volume 54, number 3, pages 228-237, ISSN 1674-4918, 2016. [DOI]
 
Dormancy in yams, Craufurd, P., Summerfield, R., Asiedu, R. and Vara Prasad, P., in: Experimental Agriculture, volume 37, number 2, pages 147-181, ISSN 0014-4797, 2001.
 
Effect of day length on the development of tubers in yams (Dioscorea spp.), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., in: Tropical Science, volume 42, pages 162-170, ISSN 1556-9179, 2002.
 
Effect of day length on the enlargement and maturation of tubers in yams (Dioscorea spp.), Shiwachi, H ., Ayankanmi, T. and Asiedu, R., volume 44, pages 33-34, 2001.
 
Effect of Ethephone and storage temperature on tuber sprouting in yams (Dioscorea spp.), Shiwachi, H ., Kikuno, H ., Asiedu, R., Onjo, M. and Toyohara, H., in: Journal of ISSAAS, volume 11, number 1, pages 36-43, 2005.
 
Effect of mineral fertilisation on tuber yield and quality in Yams (Dioscorea alata and Dioscorea rotundata), Afolabi, F.*, Matsumoto, R., Akinwande, B.*, Otegbayo, B.* and Asfaw, A., in: Agriculture, volume 13, number 12: 2240, pages 1-14, ISSN 2077-0472, 2023. [DOI]
 
Effect of staking and non-staking systems on disease severity, yield and quality attributes of yams (Dioscorea alata), Norman, P. E.*, Whyte, J., Samura, A. E.*, Massaquoi, A.*, Sessay, L.*, Dixon, A., Fomba, S. N.*, Benya, M.T.* and Sowa, M.*, in: Journal of Agriculture and Ecology Research International, volume 2, number 4, pages 219-229, ISSN 2394-1073, 2015. [DOI]
 
Effect of sucrose treatment on root, shoot and tuber formation of vine cuttings of yams (Dioscorea spp.), Kikuno, H ., Matsumoto, R., Shiwachi, H . and Asiedu, R., in: Japanese Journal of Tropical Agriculture, volume 51, number Extra issue 2, pages 69-70, 2007.
 
Evaluating the dry matter content of raw yams using hyperspectral imaging spectroscopy and machine learning, Adesokan, M., Otegbayo, B.*, Alamu, E. O., Olutoyin, M. A.* and Maziya-Dixon, B., in: Journal of Food Composition and Analysis, volume 135, number -: 106692, pages 1-12, ISSN 0889-1575, 2024. [DOI]
 
Evaluation of 5 hybrid yams for dry season yam production in lowland areas, Ikeorgu, J.* and Asiedu, R., in: Repositioning agriculture for sustainable millennium development goals in Nigeria: proceedings of the 40th annual conference of the Agricultural Society of Nigeria held at the National Root Crops Research Institute, Umudike, Abia State, 16-20 October, pages 640-642, Agricultural Society of Nigeria, 2006.
 
Exploring the genetic diversity and population structure of aerial yams (Dioscorea bulbifera L.) DArT-seq and agronomic traits, Ekaette, E.*, Nwofia, E.*, Okocha, P.*, Nnnabue, I.*, Eluwa, K.*, Obidiegwu, J.* and Agre, A. P., in: PLoS ONE, volume 19, number 8: e0306631, pages 1-19, ISSN 1932-6203, 2024. [DOI]
 
Farmers' perceptions and economic advantages of the hot-water therapy for disinfecting seed yams against nematodes in Nigeria, Amegbeto, N. K., Manyong, V., Coulibaly, O. and Asiedu, R., in: Proceedings of the African Crop Science Conference, 22-26 October 2001, Lagos, Nigeria, pages 817-823, African Crop Science Society, 2001.
 
First report of cucumber mosaic virus in yams (Dioscorea spp.) in Ghana, Togo and Republic of Benin in West Africa, Eni, A., Kumar, P. L., Asiedu, R., Alabi, O., Naidu, R.*, Hughes, J. and Rey, M.*, in: Plant Disease, volume 92, number 5, pages 833, ISSN 0191-2917, 2008. [DOI]
 
Flowering in yams (Dioscorea spp.), Asiedu, R. and Egunjobi, J.*, pages 652-661, International Society for Tropical Root Crops (ISTRC) - Africa Branch; Government of Benin, 2001.
 
Food yams in Africa, Shiwachi, H ., in: International Cooperation in Agriculture and Forestry in Japanese, volume 26, number 3, pages 30-39, 2003.
 
Food yams: advances in research, Orkwor, G. C., Asiedu, R. and Ekanayake, I. J., International Institute of Tropical Agriculture (IITA); NRCRI, ISBN 978 131 100 2, 1998.
 
Genetic and phenotypic diversity in a germplasm working collection of cultivated tropical yams (Dioscorea spp.), Sartie, A. M., Asiedu, R. and Franco, J., in: Genetic Resources and Crop Evolution, pages 1-15, ISSN 0925-9864, 2012. [DOI]
 
Genetic variation and genotype x environment interaction in yams (Dioscorea spp.) for root colonization by arbuscular mycorrhiza, Dare *, O., Abaidoo, R., Fagbola, O.* and Asiedu, R., in: Journal of Food, Agriculture and Environment, volume 6, number 2, pages 227-233, ISSN 1459-0255, 2008.
 
Genomics of yams, a common source of food and medicine in the tropics, Mignouna, H., Abang, M. and Asiedu, R., pages 549-570, chapter 23, Springer, 2008.
 
Germplasm conservation in food yams (Dioscorea spp.): constraints, application and future prospects, Ng, S. Y. C. and Ng, N. Q., volume 1, pages 257-286, Science Publishers, 1997.
 
Growing cocoyams in Nigeria, IITA, , 2003.
 
Harvest index of food yams and its implications for the improvement of tuber yield, IDRC, IDRC, 1987.
 
Hybridization of yams: a mini-review, Asiedu, R., in: Tropical Root and Tuber Crops Bulletin, volume 6, number 2, pages 5-6, ISSN 1116-3984, 1992.
 
Improved production of seed yams, Otoo, J., Okoli, O. and Ilona, P., volume 63, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2001.
 
Improving the in-situ support system for yams, Wilson, G. F. and Akapa, K., 1980.
 
Incidence and distribution of virus and virus-like diseases on yams (Dioscorea sp.) in the Republic of Benin, Eni, A., Hughes, J., Asiedu, R., Bandyopadhyay, R. and Kumar, P. L., in: 10th International Plant Virus Epidemiology Symposium, 15 - 19 October 2007, ICRIST, Hyderadad, India, pages 123, 2007.
 
Incidence and diversity of postharvest pathogens in Dioscorea yams in Nigeria, Dania, V., Fadina, O.*, Ayodele, M. and Kumar, P. L., Abstract, P. 323 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012.
 
Incidence and epidemiology of three yam virus species in various plantings of yams (Dioscorea spp.) in Nigeria, Asala, S., Kumar, P. L., Alegbejo, M.*, Kashina, B. D.* and Banwo, O. O.*, Abstract, P. 322 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28th September, 2012.
 
Increasing productivity and utilization of food yams in Africa through improved soil fertility, Lopez-Montes, A., Asiedu, R., Jemo, M., Hauser, S., Bhattacharjee, R. and Matsumoto, R., Abstract, P.98 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28, September, 2012.
 
Infestation and population dynamics of insects on stored cassava and yams chips in Benin, West Africa, Gnonlonfin, B.*, Hell, K., Siame, A. B.* and Fandohan, P.*, in: Journal of Economic Entomology, volume 101, number 6, pages 1967-1973, ISSN 0022-0493, 2008.
 
Influence of explant condition on microtuberization of yams (Dioscorea alata and D. rotundata), Kikuno, H ., Shiwachi, H ., Onjo, M. and Asiedu, R., in: Japanese Society for Tropical Agriculture, volume 48, number 2, pages 71-72, 2004.
 
Influence of fertilizers on yield, storage, and food qualities of yams, Adeniji, M., Obigbesan, G., Asiedu, R. and Bokanga, M., in: Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), Cotonou, Benin, 11-17 October 1998, pages 307-310, 2001.
 
Iron toxicity symptoms in yams (Dioscorea spp.) grown in water culture, Shiwachi, H ., Kikuno, H ., Okonkwo, C. and Asiedu, R., in: Tropical Science, volume 46, number 3, pages 160-165, ISSN 0041-3291, 2006. [DOI]
 
Molecular and agro-morphological evaluations of interspecific hybridisation in two wild yams (Dioscorea spp.) for genetic improvement, Oyedoyin, F. P., Olawuyi, O. J.*, Agre, A. P. and Asfaw, A., in: Ecological Genetics and Genomics, volume 35, number -:100345, pages 1-7, ISSN 2405-9854, 2025. [DOI]
 
Molecular markers in germplasm enhancement of yams (Dioscorea spp.), Mignouna, H., Ng, N. Q., Asiedu, R. and Thottappilly, G., in: 2nd Internaitonal Crop Science Congress, 17-24 November 1996, Newsletter, India: abstracts of poster session, pages 312, 1996.
 
Molecular markers in germplasm enhancement of yams (Dioscorea spp.), Mignouna, H., Ng, N. Q., Asiedu, R. and Thottappilly, G., in: 2nd Internaitonal Crop Science Congress, 17-24 November 1996, Newsletter, India: abstracts of poster session, pages 312, 1996.
 
Molecular taxonomy of cultivated and wild yams in West Africa, Mignouna, H., Asiedu, R. and Thottappilly, G., in: Root crops and poverty alleviation: proceedings, sixth triennial symposium of the International Society for Tropical Root Crops - Africa Branch, 22-28 October, 1995, Lilongwe, Malawi, pages 429, 1998.
 
Morphological and isozymic diversity of the cultivated yams (Dioscorea cayenensis/Dioscorea rotundata complex) of Cameroon, Mignouna, H., Dansi, A. and Zok, S., in: Genetic Resources and Crop Evolution, volume 49, pages 21-29, 2002.
 
Morphological diversity, cultivar groups and possible descent in the cultivated yams (Dioscorea cayenensis/D. rotundata) complex in Benin Republic, Dansi, A., Mignouna, H., Zoundjikekpon, J., Sangare, A.*, Asiedu, R. and Quin, F., in: Genetic Resources and Crop Evolution, volume 46, number 4, pages 371-388, ISSN 0925-9864, 1999.
 
Next-generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams, Girma Tessema, G., Hyma, K. E., Asiedu, R., Mitchell, S. E., Gedil, M. and Spillane, C., in: Theoretical and Applied Genetics, volume 127, pages 1783-1794, ISSN 0040-5752, 2014. [DOI]
 
Nutrient deficiency symptoms in yams (Dioscorea spp.), Shiwachi, H ., Okonkwo, C. and Asiedu, R., in: Japanese Journal of Tropical Agriculture, volume 48, number 2, pages 73-74, 2004.
 
Optimum time for collection of root samples for chromosome observation in yams (Dioscorea spp.), Babil, P. K., Kikuno, H ., Shiwachi, H ., Toyohara, H., Fujigaki, J., Fujimaki, H. and Asiedu, R., in: Tropical Agriculture and Development, volume 54, number 3, pages 71-75, 2010.
 
Organogenesis versus somatic embryogenesis pathway efficiencies in in vitro propagation of white and water yams, Ossai, C., Balogun, M. and Maroya, N., in: In Vitro Cellular & Developmental Biology - Plant, pages 1-11, ISSN 1054-5476, 2023. [DOI]
 
Pasting characteristics of fresh yams (Dioscorea spp.) as indicators of textural quality in a major food product: pounded yam, Otegbayo, B.*, Aina, J., Asiedu, R. and Bokanga, M., in: Food Chemistry, volume 99, pages 663-669, 2006.
 
Pathogenicity of Scutellonema bradys (Steiner and Le Hew) Andrassy on yams (Dioscorea spp.) in Benin and its control using water, neem-leaf extracts and fertilizer, Baimey, H., Coyne, D. and Labuschagne, N.*, in: Oral prsentation at the First PINCNET-Africa Workshop, 21-26 September, Ibadan, Nigeria, 2003.
 
PCR marker-based analysis of wild and cultivated yams (Dioscorea spp.)in Nigeria: genetic relationships and implication for ex situ conservation, Mignouna, H., Abang, M., Wanyera, N., Chikaleke, V., Asiedu, R. and Thottappilly, G., in: Genetic Resources and Crop Evolution, volume 52, pages 755-763, 2005. [DOI]
 
Perception of food quality in yams among Nigerian farmers, Otegbayo, B.*, kehinde, A. L.*, Sangoyomi, T.*, Samuel, F. O.* and Okonkwo, C., in: Securing livelihoods through yams: Proceedings of a technical workshop on progress in yam research for development in west and central Africa held in Accra, Ghana, 11-13 September, 2007, pages 147-156, International Institute of Tropical Agriculture (IITA), 2009.
 
Pests and pathogens of yams in storage, Green, K. and Florini, D. A., in: African Journal of Root and Tuber Crops, volume 1, number 2, pages 38-42, ISSN 1118-2075, 1996.
 
Ploidy level of the cultivated yams (Dioscorea cayenensis/D. rotundata complex) from Benin Republic as determined by chromosome counting and flow cytometry, Dansi, A., Pillay, M., Mignouna, H., Dainou, O., Mondeil, F. and Moutairou, K.*, in: African Crop Science Journal, volume 8, number 4, pages 355-364, ISSN 1021-9730, 2000.
 
Ploidy variation in the cultivated yams (Dioscorea cayenensis-Dioscorea rotundata complex) from Cameroon as determined by flow cytometry, Dansi, A., Mignouna, H., Pillay, M. and Zok, S., in: Euphytica, volume 119, pages 301-307, ISSN 0014-2336, 2001.
 
Population genomics of yams: evolution and domestication of Dioscorea species, Sugihara, Y., Kudoh, A., Oli, M. T., Takagi, H., Natsume, S., Shimizu, M., Abe, A., Asiedu, R., Asfaw, A., Adebola, P. O. and Terauchi, R., Population Genomics, pages 1-28, Springer, 2021. [DOI]
 
Postflask management of cassava and yams: IITA research guide, No. 69, Ng, S. Y. C., IITA research guide, No. 69, International Institute of Tropical Agriculture (IITA), ISBN 978-131-209-2, 2002.
 
Producing seed yams (Dioscorea rotundata Poir.) from young sprouts, Aighewi, B., Asiedu, R. and Akoroda, M., in: African Journal of Root and Tuber Crops, volume 5, number 2, pages 13-14, 2003.
 
Producing seed yams (Dioscorea rotundata Poir.) using yam peels, Aighewi, B., Asiedu, R. and Akoroda, M., in: African Journal of Root and Tuber Crops, volume 5, number 2, pages 28-31, 2003.
 
Producing seed yams (Dioscorea rotundata) from sprouts, Aighewi, B., Akoroda, M. and Asiedu, R., in: Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), Cotonou, Benin, 11-17 October 1998, pages 297-299, ISTRC-AB; Government of Benin, 2001.
 
Production of yams (Dioscorea spp.) in Sierra Leone: initiatives for increased production, Salia-Konneh, T., Jalloh, A.* and Asiedu, R., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 602-603, 2003.
 
Production of yams: present role and future prospects: IITA research guide, No. 46, Hahn, S. K., Osiru, D., Akoroda, M. and Otoo, J., IITA research guide, No. 46, International Institute of Tropical Agriculture (IITA), 1995.
 
Quantification of endogenous phytochemicals and determination of their exogenous effects in somatic embryogenesis pathways of white and water yams, Ossai, C., Balogun, M., Maroya, N. and Sonibare, M. A.*, in: In Vitro Cellular & Developmental Biology-Plant, volume 59, pages 29-38, ISSN 1054-5476, 2023. [DOI]
 
Rapid and mass propagation system for yams (Dioscorea spp.) based on vine cuttings and tissue culture techniques for germplasm collection: on-the job training, Kikuno, H ., 2010.
 
Rapid and mass propagation system for yams (Dioscorea spp.) on vine cuttings and tissue culture techniques for germplasm collection: Evaluation and achievement report on training course., Kikuno, H ., 2011.
 
Rapid propagation system for yams (Dioscorea spp.) based on vine cuttings, Kikuno, H ., 2009.
 
Reactions of white yam (Dioscorea rotundata Poir.) genotypes to three viruses infecting yams, Odu, B., Hughes, J., Asiedu, R., Shoyinka, S.* and Oladiran, O., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 516-521, 2003.
 
Reactions of white yam (Dioscorea rotundata Poir.) genotypes to three viruses infecting yams, Odu, B., Hughes, J., Asiedu, R., Shoyinka, S.* and Oladiran, O., in: Book of Abstracts of the Eighth Triennial Symposium of the International Society for Tropical Root Crops (ISTRC) - Africa Branch, 12-16 Nov, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 2001.
 
Scale insects on yams in Benin: diversity, incidence and farmers' knowledge and perceptions, Goergen, G ., Dossou, R.*, Asiedu, R. and Hanna, R., in: Tropical Roots and Tuber Crops and the Challenges of Globalization and Climate Changes. Proceedings of the 11th triennial Symposium of the ISTRC-AB, 4 to 8 October 2010, pages 411-413, ISTRC-AB, Ibadan, Nigeria, 2012.
 
Scale insects on yams in Benin: diversity, infestation levels and farmers' knowledge and perceptions, Goergen, G ., Dossou, R.*, Asiedu, R. and Hanna, R., Abstract (Poster) in Book of Abstracts of the 11th Triennial Symposium of ISTRC-AB, held at Memling Hotel, Kinshasa. 4-8 October, 2010.
 
Screening yams (Dioscorea spp.) for organoleptic quality, Adeniji, M. and Asiedu, R., in: Root crops: the small processor and development of local food industries for market economy: proceeding of the Eighth Triennial Syposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), 12-16 November 2001, Ibadan, Nigeria, pages 438-441, 2003.
 
Search for Scutellonema bradys resistance in yams (Dioscorea spp.), Kwoseh, C.*, Plowright, R., Bridge, J. and Asiedu, R., in: Journal of Science and Technology, volume 27, number 3, pages 33-42, 2007.
 
Securing livelihoods through yams: proceedings of a technical workshop on progress in yam research for development in west and central Africa held in Accra, Ghana, 11-13 September, 2007, Nkamleu, G. B., Annang, D.* and Bacco, N. M., International Institute of Tropical Agriculture (IITA), 2009.
 
Seed transmission of viruses in Dioscorea yams, Kumar, P. L., Lopez-Montes, A. and Ayodeji, O., Abstract, P. 368 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28 September, 2012.
 
Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana, Otoo, E.* and Asiedu, R., in: African Journal of Biotechnology, volume 8, number 21, pages 5747-5754, ISSN 1684-5315, 2009.
 
Studies on the antioxidant and whitening properties of extracts from tuber of yams (Dioscorea spp.), Park, B., Kikuno, H ., Asiedu, R. and Park, C. H., in: Proceedings of Japanese Society for Tropical Agriculture: Research for Tropical Agriculture, 18-19 October, 2008, pages 47-48, 2008.
 
Survey of the incidence and distribution of five viruses infecting yams in the major yam-producing zones in Benin, Eni, A., Hughes, J. and Rey, M.*, in: Annals of Applied Biology, ISSN 0003-4746, 2008.
 
Sweet potato and yams, Hahn, S. K. and Hozyo, Y., 1980.
 
The employment of a nonfumigant nematicide for control of the root-knot and lesion nematodes on yams and crop preservation in storage, Badra, T., Steele, W. M. and Caveness, F. E., in: Nematropica, volume 10, number 2, pages 81-85, ISSN 0099-5444, 1980.
 
The prevalence of badnaviruses in West African yams (Dioscorea cayenensis-rotundata) and evidence of endogenous pararetrovirus sequences in their genomes, Seal, S., Turaki, A., Muller, E., Kumar, P. L., Kenyon, L., Filloux, D., Galzi, S., Lopez-Montes, A. and Iskra-Caruana, M. L., in: Virus Research, volume 186, pages 144-154, ISSN 0168-1702, 2014. [DOI]
 
The susceptibility of the root-knot nematode, Meloidogyne incognita, Race 2, on yams, Dioscorea spp.: paper presented at the 8th Annual Conference of the Nigerian Society for Plant Protection, Benin City, February 27-March 1, 1978, Caveness, F. E., 1978.
 
Three new isometric viruses infecting yams in Nigeria, Dongo, L., Hughes, J. and Atiri, G.*, pages 652-661, 2001.
 
Tissue culture of cocoyams, Ng, S. Y. C., in: Paper presented at the symposium on Tissue Culture of Economically Important plant, 28 August -2 September 1983, University of Nigeria Nsukka , Nigeria, 1983.
 
Towards a development strategy for yams, Asiedu, R., in: ISTRC Newsletter, volume 24, pages 10, 1997.
 
Towards genetic improvement of yams (Dioscorea spp.) in Africa, Asiedu, R., in: Tropical Root and Tuber Crops Bulletin, volume 8, number 1, pages 8-9, 1994.
 
True yams (Dioscorea): a biological and evolutionary link between eudicots and grasses, Mignouna, H. D.*, Abang, M. M., Asiedu, R. and Geeta, R., in: Cold Spring Harbor Protocols, volume 4, number 11, ISSN 1559-6095, 2009. [DOI]
 
Underresearched tropical food crops: cowpea, banana and plantain, and yams, Asiedu, R., Fatokun, C., Mignouna, J.*, Ng, S. Y. C. and Quin, F., pages 187-216, Springer, 1999.
 
Using isozyme polymorphism to assess genetic variation within cultivated yams (Dioscorea cayenensis/Dioscorea rotundata complex) of the Republic of Benin, Dansi, A., Mignouna, H., Zoundjihekpon, J., Sangare, A.*, Asiedu, R. and Ahoussou, N., in: Genetic Resources and Crop Evolution, volume 47, pages 371-383, 2000.
 
Varietal identification key of the cultivated yams (Dioscorea cayenensis / Dioscorea rotundata complex) of Benin republic, Dansi, A., Mignouna, H., Zoundjihekpon, J., Sangare, A.* and Asiedu, R., in: Plant Genetic Resources Newsletter, volume 116, pages 18-25, 1998.
 
Varietal response of hybrid yams to minituber production using vine cutting technique, Ikeorgu, J.* and Kikuno, H ., in: Proceedings of the 43rd Annual Conference of the Agricultural Society of Nigeria, pages 218-227, Agricultural Society of Nigeria, 2009.
 
Virus and virus-like diseases of yams in West Africa: status and prospects for control, Kumar, P. L. and Seal, S., Abstract, P. 92 in the Book of Abstracts, 16th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC), 23 - 28, September, 2012.
 
Viruses and viral diseases of yams in Ghana, Offei, S.*, Olatunde, O., Hughes, J. and Kenyon, L., 2001.
 
Viruses infecting cultivated yams (Dioscorea alata and D. rotundata) in Nigeria, Hughes, J., Dongo, L. and Atiri, G.*, in: Phytopathology, volume 87, number S-45, 1997.
 
Working with farmers to produce clean seed yams: YIIFSWA working paper series, No. 5, McNamara, N., Morse, S. and IITA, , YIIFSWA working paper series, 2014.
 
Yam (Dioscorea) husbandry: cultivating yams in the field or greenhouse, Mignouna, H. D.*, Abang, M. M., Asiedu, R. and Geeta, R., in: Cold Spring Harbor Protocols, volume 4, number 11, pages 1-3, ISSN 1559-6095, 2009. [DOI]
 
Yams, Mignouna, H., Abang, M. and Asiedu, R., volume 3, pages 271-296, chapter 15, Springer-Verlag, 2007.
 
Yams, Asiedu, R., Wanyera, N., Ng, S. Y. C. and Ng, N. Q., pages 57-66, Cambridge University Press, Cambridge, UK, 1997.
 
Yams, Arnau, G., Abraham, K.*, Sheela, M.N.*, Chair, H., Sartie, A. M. and Asiedu, R., Root and Tuber Crops, volume 7, pages 127-148, chapter 4, Springer, ISBN 978-0-387-92764-0, 2010. [DOI]
 
Yams in Africa: securing the future through research on a traditional favorite, Asiedu, R., in: ISTRC Newsletter, volume 23, pages 5-7, 1996.
 
Yams in the Tanzanian food and farming systems: implications for research and development, Kapinga, N., Wanyera, N., Asiedu, R., Chirimi, B. and Kaare, S., in: Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch (ISTRC-AB), Cotonou, Benin, 11-17 October 1998, pages 230-236, ISTRC-AB; Government of Benin, 2001.
 
Yams in West Africa: production and collaborative research, Asiedu, R., in: Atelier national sur le developpement durable de la production et de la consommation de l'igname en Cote d'Ivoire. Abidjan, October 23-26. Association Ivoirienne des Sciences Agronomique (AISA), pages 173-176, 2003.
 
Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana, Otoo, E.* and Asiedu, R., in: African Journal of Biotechnology, volume 8, number 21, pages 5747-5754, ISSN 1684-5315, 2009.
 
Keywords:Dioscorea; Enzymatic oxidation; farmer participatory breeding; Ghana; yams

Quantification of endogenous phytochemicals and determination of their exogenous effects in somatic embryogenesis pathways of white and water yams, Ossai, C., Balogun, M., Maroya, N. and Sonibare, M. A.*, in: In Vitro Cellular & Developmental Biology-Plant, volume 59, pages 29-38, ISSN 1054-5476, 2023. [DOI]
 
Revue bibliographique sur la gestion de la fertilite des sols cultives en igname en Cote d'Ivoire, N'Goran, K. E., Zohouri, P. G., Yoro, R. G., Kouakou, A. M., Assa, A. and Asiedu, R., in: Agronomie Africaine, volume 19, number 3, pages 281-288, ISSN 1015 2288, 2007.
 
Securing livelihoods through yams: proceedings of a technical workshop on progress in yam research for development in west and central Africa held in Accra, Ghana, 11-13 September, 2007, Nkamleu, G. B., Annang, D.* and Bacco, N. M., International Institute of Tropical Agriculture (IITA), 2009.
 
Evaluation of water yam (Dioscorea alata L.) germplasm for reaction to yam anthracnose and virus diseases and their effect on yield, Egesi, C. N.*, Odu, B., Ogunyemi, S., Asiedu, R. and Hughes, J., in: Journal of Phytopathology, volume 155, number 9, pages 536-543, 2007.
 
Abstract:
Use of genetic resistance is the most practical and economic way to manage major diseases of yams. In a search for sources of resistance, 40 water yam (Dioscorea alata L.) accessions from Benin, Ghana, Nigeria and Puerto Rico were screened under natural disease infection conditions in Ibadan, Nigeria. The accessions were evaluated at 1, 3 and 6 months after planting (MAP) for severity of yam anthracnose and viral diseases. The effect of the pathogens on yield was also evaluated at harvest 9 MAP. There were significant differences (P < 0.001) between accessions for severities of anthracnose and viral diseases. Eight (20%) of them had lower anthracnose area under disease progress curves (AUDPC) values than the resistant check while 10 (25%) had AUDPC values below the trial mean. There were significant variations (P < 0.001) in yield components among the accessions. There was significant negative correlation of anthracnose severity with fresh tuber yield (r = -0.51) and with number of tubers per plot (r = -0.40). Similarly, significant negative correlations were observed of virus disease severity with fresh tuber yield (r = -0.78) and number of tubers per plot (r = -0.65). Linear regression models also showed that the fresh yield had significant negative relationships with anthracnose (R2 = 0.26) and viral (R2 = 0.62) diseases. The accessions identified as resistant constitute a valuable resource for breeding of resistant germplasm.

First report of cucumber mosaic virus in yams (Dioscorea spp.) in Ghana, Togo and Republic of Benin in West Africa, Eni, A., Kumar, P. L., Asiedu, R., Alabi, O., Naidu, R.*, Hughes, J. and Rey, M.*, in: Plant Disease, volume 92, number 5, pages 833, ISSN 0191-2917, 2008. [DOI]
 
Abstract:
Yam (Dioscorea spp., family Dioscoreaceae) is one of the most important food crops cultivated in the West African yam zone comprising the forest and savannah areas of Nigeria, Ghana, Cote d'Ivoire, Republic of Benin, and Togo, which account for more than 90% of the 4.59 million ha of yam cultivation worldwide (1). A survey was conducted in 2005 to document viruses in yams in Ghana, Togo, and the Republic of Benin. Samples (1,405) from five species of yam showing mosaic, chlorosis, and stunting as well as asymptomatic plants were tested for Dioscorea bacilliform virus (DBV, genus Badnavirus), Yam mosaic virus (YMV, genus Potyvirus), and Yam mild mosaic virus (YMMV, genus Potyvirus), the three most common viruses infecting yams. In addition, samples were tested for Cucumber mosaic virus (CMV), since CMV was previously reported to infect yams in Cote d'Ivoire (2) and Nigeria (3). In protein-A sandwich-ELISA with polyclonal antibodies to a cowpea isolate of CMV, 23 of the 1,405 samples (6 of 218 samples from Togo, 13 of 628 samples from Ghana, and 4 of 559 samples from Republic of Benin) tested positive for CMV. The CMV-positive samples were from D. alata (N = 16) and D. rotundata (N = 7), whereas all samples from D. cayenensis, D. dumetorum, and D. bulbifera tested negative. CMV was detected as mixed infections with DBV, YMV, or YMMV in 21 of 23 samples. Some of these samples showed puckering, chlorosis, mottling, and crinkling, whereas some plants infected by two or more viruses were asymptomatic. Only two samples from D. rotundata had a single infection of CMV and they showed mild chlorotic symptoms in young leaves that were inconspicuous in mature leaves. In sap inoculations, the virus induced systemic mosaic in Nicotiana glutinosa. The presence of CMV in ELISA-positive yam samples was further confirmed by immunocapture-reverse transcription (IC-RT)-PCR using CMV antibodies as trapping antibody and oligonucleotide primers specific for a 485 nt corresponding to 3' end of the coat protein gene and C-terminal noncoding region of RNA-3 (4). To confirm the specificity of ICRT-PCR, the 485-bp amplicons from an isolate from the Republic of Benin was cloned into pCR2.1 (Invitrogen, Carlsbad, CA) and three independent clones were sequenced from both orientations. Pairwise comparison of a consensus sequence (Accession No. EU274471) with corresponding sequences of other CMV isolates deposited in GenBank showed 99% identity at the nucleotide sequence level (Accession No. U22821) and revealed that the CMV isolate from yam belongs to sub-Group IA. To our knowledge, this is the first report of CMV infection in yams (D. alata and D. rotundata) in Ghana, Togo, and the Republic of Benin. Together with a previous documentation of CMV in D. alata and D. trifida in Cote d'Ivoire and Nigeria (2,3), this report adds to existing knowledge on distribution of CMV in yams with implications for yam production and germplasm distribution in the West Africa Region.