Cassava, a crop widely adapted in the tropics, has the important attribute of withstanding adverse environmental conditions better than do many other staple crops. The performance of an individual genotype, however, is influenced by the environment in which it grows. In Malawi, the heterogeneity ...
Mkumbira, J.
,
Mahungu, N.M.
,
Gullberg, U.
,
[Grouping locations for efficient cassava evaluation in Malawi]
,
Grouping locations for efficient cassava evaluation in Malawi
The constraint to the production of the root and tuber crops, cassava, yams and sweet potato in Nigeria and Africa were stated. Breeding methods most appropriate to these crops were discussed in terms of mating systems, creation of source populations, selection, and use of selections. Intervariet...
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
Time to flowering and maturity is an important adaptive feature in annual crops, including cowpeas (Vigna unguiculata (L.) Walp.). In West and Central Africa, photoperiod is the most important environmental variable affecting time to flowering in cowpea. The inheritance of time from sowing to flo...
Ishiyaku, M.
,
Singh, B.
,
Craufurd, Peter Q.
,
[Inheritance of time to flowering in cowpea (Vigna unguiculata (L.) Walp.)]
,
Inheritance of time to flowering in cowpea (Vigna unguiculata (L.) Walp.)
Assessment of new yam varieties in Côte d'Ivoire : results of three experiments years with improved genotypes by IITA The most important food crop in the Ivory Coast, yam, is cultivated in a traditional system with low productivity. In order to suffice the needs of the growing population the intr...
Ettien, J.B.
,
Tschannen, A.B.
,
[Evaluation de nouvelles varieties digname en Cote dIvoire: bilan de trois annees dexperience avec des genotypes ameliores par lIITA]
,
Evaluation de nouvelles varieties digname en Cote dIvoire: bilan de trois annees dexperience avec des genotypes ameliores par lIITA
Maize (Zea mays L.) is an important staple food consumed by people with varying food preferences and socioeconomic backgrounds in West Africa (WA). Genotype by environment interactions (G×E) exist in WA implying the need for extensive testing of cultivars in multiple environments over years befor...
Badu-Apraku, B.
,
Akinwale, R.O.
,
Menkir, A.
,
Obeng-Antwi, K.
,
Osuman, A.S.
,
Coulibaly, N.
,
Onyibe, J.E.
,
Yallou, G.C.
,
Abdullai, M.S.
,
Didjera, A.
,
[Use of GGE biplot for targeting early maturing maize cultivars to mega environments in West Africa]
,
Use of GGE biplot for targeting early maturing maize cultivars to mega environments in West Africa
Background
Large genome-wide association (GWA) studies of European ancestry individuals have identified multiple genetic variants influencing iron status. Studies on the generalizability of these associations to African ancestry populations have been limited. These studies are important given int...
Gichohi-Wainaina, Wanjiku N.
,
Tanaka, Toshiko
,
Towers, G. Wayne
,
Verhoef, Hans
,
Veenemans, Jacobien
,
Talsma, Elise F.
,
Harryvan, Jan
,
Boekschoten, Mark V.
,
Feskens, Edith J.
,
Melse-Boonstra, Alida
,
[Associations between common variants in iron-related genes with haematological traits in populations of African ancestry]
,
Associations between common variants in iron-related genes with haematological traits in populations of African ancestry
Past research developed reliable equations to base selections for high β-carotene on near-infrared spectroscopy (NIR) predictions (100 genotypes d−1) rather than with high-performance liquid chromatography (HPLC) (<10 samples d−1). During recent harvest, CIAT made selections based on NIR predicti...
Belalcázar, John
,
Dufour, D.L.
,
Andersson, Meike S.
,
Pizarro, Mónica
,
Luna, Jorge
,
Londoño, Luis Fernando
,
Morante, Nelson
,
Jaramillo Valencia, Angélica M.
,
Pino, Lizbeth
,
Becerra López Lavelle, Luis Augusto
,
Davrieux, Fabrice
,
Talsma, Elise F.
,
Ceballos, H.
,
[High-throughput phenotyping and improvements in breeding cassava for increased carotenoids in the roots]
,
High-throughput phenotyping and improvements in breeding cassava for increased carotenoids in the roots
In the 1986 breeding program for enhanced N fixation, emphasis was placed on small seeded indeterminate beans; however, at the beginning of 1986 it was decided that some priority should be given to materials for Africa, including larger seeded determinate and indeterminate bush types. In Popayan,...
En el programa de mejoramiento de 1986 para incrementar la fijacion de N, se dio enfasis al frijol indeterminado de semilla pequena; sin embargo, a comienzos de 1986 se decidio que se daria alguna prioridad a materiales para Africa, incluyendo los tipos arbustivos determinados e indeterminados de...
International Center for Tropical Agriculture
,
[Genetic improvement and related activities. Improvement of individual characters. N-fixation]
,
Genetic improvement and related activities. Improvement of individual characters. N-fixation
The problem of genotype-by-environment (G x E) interactions that often complicates the interpretation of multilocational trial analysis making the prediction of genotype performance difficult can be eased with the adoption of the Additive Main Effects and Multiplicative Interaction (AMMI) model a...
Aina, O.O.
,
Dixon, A.
,
Akinrinde, E.
,
[Additive main effects and multiplicative interaction (AMMI) analysis for yield of cassava in Nigeria]
,
Additive main effects and multiplicative interaction (AMMI) analysis for yield of cassava in Nigeria