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Three late blight resistance (R) genes from wild potato species were transferred as a stack into the farmer-preferred varieties ‘Tigoni’ and ‘Shangi’. Transgenic events were tested by detached-leaf assays (DLA) and whole-plant assays (WPA) with isolates of Phytophthora infestans using 20,000 spor...


Webi, E.N.Kariuki, D.Kinyua, J.Njoroge, A.W.Ghislain, M.Magembe, E.[Extreme resistance to late blight disease by transferring 3 R genes from wild relatives into African farmer-preferred potato varieties.]Extreme resistance to late blight disease by transferring 3 R genes from wild relatives into African farmer-preferred potato varieties.

Considered responsible for one million deaths in Ireland and widespread famine in the European continent during the 1840s, late blight, caused by Phytophthora infestans, remains the most devastating disease of potato (Solanum tuberosum L.) with about 15%–30% annual yield loss in sub‐Saharan Afric...


Ghislain, M.Byarugaba, A.A.Magembe, E.Njoroge, A.W.Rivera, C.Roman, M.L.Tovar, J.C.Gamboa, S.Forbes, G.Kreuze, J.F.Barekye, A.Kiggundu, A.[Stacking three late blight resistance genes from wild species directly into African highland potato varieties confers complete field resistance to local blight races]Stacking three late blight resistance genes from wild species directly into African highland potato varieties confers complete field resistance to local blight races

Root necrosis similar to those of the cassava brown streak disease (CBSD) were observed on cassava in western provinces of the Democratic Republic of Congo (DR.Congo) in the early 2000’s. However molecular laboratory diagnosis were not able to detect any causative agent responsible for the attack...


Bakelana, Z.Magembe, E.Laura, M.B.Macharia, M.Mahungu, N.Tata-Hangy, W.Lutete, D.Monde, G.Harvey, J.Ndunguru, J.Kayuki, C.Pita, J.Lema, K.M.Kanana, T.[Attempts to identify Cassava Brown Streak Virus in western Democratic Republic of Congo]Attempts to identify Cassava Brown Streak Virus in western Democratic Republic of Congo

Sixty three potato clones (51 farmers’ and 12 varieties) from Eritrea, 18 and 12 varieties from Kenya and Rwanda, respectively were characterized using 12 highly polymorphic simple sequence repeat (SSR) markers. The study was designed to assess the genetic diversity and varietal distinctness amon...


Biniam, M.G.Githiri, S.M.Mehari, T.Kasili, R.W.Ghislain, M.Magembe, E.[Genetic diversity assessment of farmers’ and improved potato (Solanum tuberosum) cultivars from Eritrea using simple sequence repeat (SSR) markers.]Genetic diversity assessment of farmers’ and improved potato (Solanum tuberosum) cultivars from Eritrea using simple sequence repeat (SSR) markers.

The International Institute of Tropical Agriculture houses the largest collection of cowpea landraces in the world. This collection has been studied using agro morphological, botanical and geographic descriptors to define a core collection with a smaller reference collection being defined thereaf...


Hearne, S.J.Franco, J.Magembe, E.[Optimal units of selection – how many plants are representative of diversity in collections of cowpea landrace accessions?]Optimal units of selection – how many plants are representative of diversity in collections of cowpea landrace accessions?
Zawedde, B.M.Ghislain, M.Magembe, E.Amaro, G.B.Grumet, R.Hancock, J.[Characterization of the genetic diversity of Uganda's sweet potato (Ipomoea batatas) germplasm using microsatellites markers.]Characterization of the genetic diversity of Uganda's sweet potato (Ipomoea batatas) germplasm using microsatellites markers.

Magembe, E.Mwathi, M.Rivera, C.Roman, M.Orbegozo, J.Tovar, J.C.Pérez, W.Gamboa, S.Kreuze, J.F.Forbes, G.Ghislain, M.Gati, J.M.[Development of potato varieties resistant to late blight]Development of potato varieties resistant to late blight

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