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The current study was aimed at identifying mega‐environments in Ghana and evaluating adaptability of superior sweetpotato [Ipomoea batatas (L.) Lam.] genotypes from a targeted breeding effort. Three sets of genotypes were evaluated in multi‐environment trials (MET). Twelve sweetpotato varieties w...


Swanckaert, J.Akansake, D.Adofo, K.Acheremu, K.Boeken, B.R.Eyzaguirre, R.Grüneberg, W.J.Low, J.W.Campos, H.[Variance component estimations and mega‐environments for sweetpotato breeding in West Africa.]Variance component estimations and mega‐environments for sweetpotato breeding in West Africa.

Black sigatoka (Mycosphaerella fijiensis Morelet), an airborne fungal leaf-spot disease, is a major constraint to plantain and banana (Musa spp.) production world-wide. Gaining further knowledge of the genetics of host-plant resistance will enhance the development of resistant cultivars, which is...


Ortiz, R.Vuylsteke, D.R.[Inheritance of black sigatoka disease resistance in plantainbanana (Musa spp.) hybrids]Inheritance of black sigatoka disease resistance in plantainbanana (Musa spp.) hybrids

Few genetic markers are available in Musa spp. as a result of a lack of inheritance studies. Full-sib diploid (2n = 2x = 22) plantain-banana hybrids of the International Institute of Tropical Agriculture were selfed or outcrossed with other diploid bananas, one of which is an improved selection f...


Ortiz, R.Vuylsteke, D.R.[Inheritance of albinism in banana and plantain (Musa spp.)]Inheritance of albinism in banana and plantain (Musa spp.)

Bananas are monocots and members of the genus Musa, family Musaceae. They are the second largest fruit crop in the world with an annual production of about 65 million tons (INIBAP 1993). The export trade, involving just dessert bananas of the Cavendish subgroup, comprises only 10% of the total ba...


Panis, B.Sagi, L.Swennen, R.[Regeneration of plants from protoplasts of Musa species (banana)]Regeneration of plants from protoplasts of Musa species (banana)

Genetic enhancement of Musa spp. has aimed at producing hybrids with high yield, short stature, fast crop cycling, and disease resistance through interspecific and interploidy crosses. Progeny testing for parental selection has seldom been carried out in Musa and little is known on combining abil...


Tenkouano, T.Ortiz, R.Vuylsteke, D.R.[Combining ability for yield and plant phenology in plantain derived populations]Combining ability for yield and plant phenology in plantain derived populations

Until recently, breeding programs in Africa placed little emphasis on grain quality improvement. Consequently, some farmers have not adopted improved high yielding varieties because they lacked desired quality characteristics for processing and other end uses. We conducted this study to determine...


Oikeh, S.O.Kling, J.G.Okoruwa, A.E.[Nitrogen fertilizer management effects on maize grain quality in the West African moist savanna]Nitrogen fertilizer management effects on maize grain quality in the West African moist savanna

HarvestPlus and its partners have successfully developed and delivered iron bean varieties to more than one million farming households in Rwanda, DRC, and Uganda to help combat the adverse health effects of iron deficiency widespread in these countries. Focusing primarily on Rwanda, this chapter ...


Mulambu, J.Andersson, Meike S.Palenberg, M.Pfeiffer, Wolfgang H.Saltzman, AmyBirol, E.Oparinde, A.Boy, E.Asare-Marfo, DoreneLubobo, A.Mukankusi, Clare MugishaNkalubo, Stanley T.[Iron beans in Rwanda: crop development and delivery experience]Iron beans in Rwanda: crop development and delivery experience

Reductions in agricultural productivity with consequences for food security associated to climate change are expected in the absence of adaptation. For common beans, across South America, a decrease in climatic suitability has been projected, with heat and drought stresses being the key drivers f...


Heinemann, Alexandre B.Ramírez Villegas, JuliánStonea, Luís FernandoDidonet, Agostinho Dirceu[Climate change determined drought stress profiles in rainfed common bean production systems in Brazil]Climate change determined drought stress profiles in rainfed common bean production systems in Brazil
Heinemann, Alexandre B.Barrios Pérez, CamiloRamírez Villegas, JuliánArango-Londoño, DavidBonilla Findji, OsanaMedeiros, João CarlosJarvis, Andy[Variation and impact of drought-stress patterns across upland rice target population of environments in Brazil]Variation and impact of drought-stress patterns across upland rice target population of environments in Brazil

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