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Nigeria (1) and Uganda (3) are the closest countries to the Democratic Republic of Congo (DRC) where soybean rust caused by Phakopsora pachyrhizi has been reported. In February 2007, during a disease survey in DRC, soybean (Glycine max) leaves with rust symptoms (tan, angular lesions with erumpen...


Ojiambo, P.Bandyopadhyay, RanajitTwizeyimana, M.Lema, A.Frederick, R.D.Pedley, K.F.Stone, C.L.Hartman, G.[First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo]First report of rust caused by Phakopsora pachyrhizi on soybean in Democratic Republic of Congo

Fourteen soybean accessions and breeding lines were evaluated for resistance to soybean rust caused by the fungus Phakopsora pachyrhizi. Evaluations were conducted in replicated experiments in growth chambers using detached leaves and under greenhouse and field conditions. In growth-chamber exper...


Twizeyimana, M.Ojiambo, P.S.Ikotun, T.Paul, C.Hartman, G.L.Bandyopadhyay, Ranajit[Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi]Comparison of field, greenhouse and detachedleaf evaluations of soybean germplasm for resistance to Phakopsora pachyrhizi
Kumar, P.L.Mgbechi-Ezeri, J.U.Eni, A.O.Akinbade, S.A.Asiedu, RobertDixon, Alfred G.O.Fatokun, C.A.Bandyopadhyay, Ranajit[The challenges and potential options for controlling virus diseases of legumes and tuber crops in West Africa]The challenges and potential options for controlling virus diseases of legumes and tuber crops in West Africa

Simple sequence repeat (SSR) markers were used to classify 116 isolates of Phakopsora pachyrhizi, the cause of soyabean rust, collected from infected soyabean leaves in four agroecological zones in Nigeria. A high degree of genetic variation was observed within the sampled populations of P. pachy...


Twizeyimana, M.Ojiambo, P.S.Haudenshield, J.S.Caetano‐Anollés, G.Pedley, K.F.Bandyopadhyay, RanajitHartman, G.L.[Genetic structure and diversity of Phakopsora pachyrhizi isolates from soyabean]Genetic structure and diversity of Phakopsora pachyrhizi isolates from soyabean
Twizeyimana, M.Ojiambo, P.S.Bandyopadhyay, RanajitHartman, G.L.[Use of quantitative traits to assess aggressiveness of Phakopsora pachyrhizi isolates from Nigeria and the United States]Use of quantitative traits to assess aggressiveness of Phakopsora pachyrhizi isolates from Nigeria and the United States
Twizeyimana, M.Bandyopadhyay, RanajitOjiambo, P.Paul, C.Hartman, G.[A detached leaf method to evaluate soybean for resistance to rust: Confeerence Procedings of the National Soybean Rust Symposium in St. Louis, MO. USA. 29 November to 1 December]A detached leaf method to evaluate soybean for resistance to rust: Confeerence Procedings of the National Soybean Rust Symposium in St. Louis, MO. USA. 29 November to 1 December
Mgbechi-Ezeri, J.U.Ayodele, M.Akinbade, S.A.Hughes, Jacqueline d'ArrosBandyopadhyay, RanajitKumar, P.L.[Incidence of seed transmitted viruses in cowpea and soybean in Nigeria]Incidence of seed transmitted viruses in cowpea and soybean in Nigeria

Soybean rust, caused by Phakopsora pachyrhizi, is an important disease in Nigeria and many other soybean-producing countries world-wide. To determine the geographical distribution of soybean rust in Nigeria, soybean fields were surveyed in the Derived Savanna (...


Twizeyimana, M.Ojiambo, P.S.Sonder, KaiIkotun, T.Hartman, G.L.Bandyopadhyay, Ranajit[Pathogenic variation of Phakopsora pachyrhizi infecting soybean in Nigeria]Pathogenic variation of Phakopsora pachyrhizi infecting soybean in Nigeria

Soybean rust, caused by Phakopsora pachyrhizi Syd., is a major disease limiting soybean [Glycine max (L.) Merr.] production in many areas of the world. Yield losses of up to 80% have been reported in experimental plots in Taiwan. Although the disease is not always yield limiting, it has the poten...


Hartman, G.L.Hill, C.B.Twizeyimana, M.Miles, M.R.Bandyopadhyay, Ranajit[Interaction of soybean and Phakopsora pachyrhizi, the cause of soybean rust]Interaction of soybean and Phakopsora pachyrhizi, the cause of soybean rust

Diseases do not respect national boundaries. The International Plant Diagnostic Network (IPDN) was initiated to improve the capacity for precise and rapid disease diagnostics across West Africa. A disease can only be controlled in an appropriate manner if the causal agent is known. Incorrect diag...


Beed, Fen D.Sikirou, R.Bandyopadhyay, RanajitTwizeyimana, M.Miller, S.[The International Plant Diagnostic Network West Africa]The International Plant Diagnostic Network West Africa

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