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A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently release...


Kamara, A.Y.Ewansiha, S.U.Ajeigbe, Hakeem A.Okechukwu, R.U.Tefera, H.Boukar, O.Omoigui, L.O.[Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades]Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades

Selection indices provide useful information to breeders who usually base selection on meansand ranks. Knowledge on selection criteria for improving tef grain yield is very limited. Accordingly, theobjective of this study was to develop selection criteria for improving tef grain yield through ind...


Chanyalew, S.Tefera, H.Zelleke, H[Selection index for improving grain yield and related traits in Tef (Eragrostis Tef)]Selection index for improving grain yield and related traits in Tef (Eragrostis Tef)

Background Tef [Eragrostis tef (Zucc.) Trotter] is the major cereal crop in Ethiopia. Tef is an allotetraploid with a base chromosome number of 10 (2n = 4× = 40) and a genome size of 730 Mbp. The goal of this study was to identify agronomically important quantitative trait loci (QTL) using recom...


Yu, J.K.Graznak, E.Breseghello, FlávioTefera, H.Sorrells, M.E.[QTL mapping of agronomic traits in tef [Eragrostis tef (Zucc) Trotter]]QTL mapping of agronomic traits in tef [Eragrostis tef (Zucc) Trotter]

Soybean rust, caused by Phakopsora pachyrhizi, has become a threat to soybean production in west, central, east and southern Africa. This foliar disease can cause 40-80% yield loss under African conditions. IITA started to develop resistant lines for this disease since 2003 and a number of homozy...


Tefera, H.Bandyopadhyay, RanajitAdeleke, R.A.Boukar, O.Ishaq, M.[Grain yields of rust resistant promiscuous soybean lines in the Guinea savanna of Nigeria]Grain yields of rust resistant promiscuous soybean lines in the Guinea savanna of Nigeria

This paper describes a highly client-oriented breeding applied to enhance the development and release of a tef (Eragrostis tef) variety with farmer participation in Ethiopia. The main features include; clear objective, target cross, early-stage researcher selection, multi-location yield trial, fa...


Belay, G.Tefera, H.Getachew, A.Assefa, K.Metaferia, G.[Highly clientoriented breeding with farmer participation in the Ethiopian cereal tef (Eragrostis tef (Zucc.) Trotter)]Highly clientoriented breeding with farmer participation in the Ethiopian cereal tef (Eragrostis tef (Zucc.) Trotter)

All soybean cultivars grown in Nigeria are highly susceptible to rust (Phakopsora pachyrhizi), a disease that can cause up to 60-80% seed losses. IITA currently emphasizes development of rust-resistant cultivars for African farmers for whom host resistance is most economical for disease managemen...


Tefera, H.Bandyopadhyay, Ranajit[Rust resistant soybean breeding lines at the International Institute of Tropical Agriculture]Rust resistant soybean breeding lines at the International Institute of Tropical Agriculture

Molecular genetic analysis of tef using 85 Amplified Fragment Length Polymorphism (AFLP), 50Expressed Sequence Tag-Simple sequence Repeats (EST-SSRs), 20 Simple Sequence Repeat (SSR)and 14 Inter Simple Sequence Repeat (ISSR) was conducted using a population of 124 F7 recombinant inbred lines (RIL...


Chanyalew, S.Tefera, H.Harjit-SinghSorrells, M.E.[Comparison of AFLP, ESTSSR, ISSR and SSR markers for polymorphism among recombinant inbred lines of tef (Eragrostis tef)]Comparison of AFLP, ESTSSR, ISSR and SSR markers for polymorphism among recombinant inbred lines of tef (Eragrostis tef)

Soybean (Glycine max L.) is an important grain legume cultivated on approximately 1.24 million ha in Africa (1). Malawi ranks fourth in area of production in Africa, with 75,000 ha in 2009 (1). Soybean is also gaining importance in Mozambique and several other southern African countries due to di...


Kumar, P.L.Sharma, K.Boahen, S.Tefera, H.Tamo, M.[First report of soybean witchesbroom disease caused by Group 16SrII phytoplasma in soybean in Malawi and Mozambique]First report of soybean witchesbroom disease caused by Group 16SrII phytoplasma in soybean in Malawi and Mozambique

Tef is a staple cereal of Ethiopia in high demand by consumers. In order to cope up with this high consumer demand, productivity per unit of land must increase through the development and use of high-yielding varieties. To this effect, the National Tef Research Project has long been striving towa...


Tefera, H.Belay, G.Assefa, K.[Genetic variation in F2 populations and their potential in the improvement of grain yield in tef (Eragrostis tef)]Genetic variation in F2 populations and their potential in the improvement of grain yield in tef (Eragrostis tef)

Tef, Eragrostis tef (Zucc.) Trotter, is the main Ethiopian cereal grown on 2.5 million ha annually, and serving as a staple food grain for more than 50 million people. The major constraints in tef husbandry are low productivity (average about 1 t ha21) and lodging. Scientific research on tef bega...


Assefa, K.Aliye, S.Belay, G.Metaferia, G.Tefera, H.Sorrells, M.E.[Quncho: the first popular tef variety in Ethiopia]Quncho: the first popular tef variety in Ethiopia

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