Resultados de búsqueda - "International Institute of Tropical Agriculture"

Seasonal variation of apparent male fertility and 2n pollen production in plantain and banana por Ortíz, R., Ulburghs, F., Okoro, J.

“…Apparent male fertility, as measured by pollen stainability, and production of 2n pollen (gamete with the sporophytic chromosome number) were examined over a period of 1 year (Oct. 1992 to Oct. 1993) in `Calcutta 4' (wild banana), `Galeo', and `Pisang lilin' (cultivated bananas), and in TMP2x 1297-3 (plantain—banana hybrid), which are the most popular diploid parents in the breeding program of the International Institute of Tropical Agriculture. Differences in pollen stainability were found among these clones. …”
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Reaction of cowpea (Vigna unguiculata L. Walp.) to six isolates of blackeye cowpea mosaic virus (BlCMV) and cowpea aphidborne mosaic virus (CAMV), two potyviruses infecting cowpea... por Gumedzoe, M.Y.D., Rossel, H.W., Thottappilly, G., Asselin, A., Huguenot, C.

“…Five potyvirus isolates from various cowpea-producing areas (Guinea and Sudan savannas and forest zones) in Nigeria were identified by serology and infectivity tests as BlCMV (Isolates IT15, IT16 and WC) or as CAMV (isolates IT11 and ZARIA) and compared with the standard isolate of blackeye cowpea mosaic virus (BlCMV) (isolate ONNE) used at the International Institute of Tropical Agriculture (IITA) for screening purposes. …”
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Effect of planting season on cassava anthracnose disease development por Fokunang, C.N., Akem, C.N., Ikotun, T., Dixon, Alfred G.O.

“…Twelve cassava (Manihot esculenta Crantz) genotypes were planted under natural field conditions for two different cropping seasons (wet and dry), in 1992 and 1993 at the research farm of the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. …”
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Bruchid resistance in cowpea por Singh, B.B., Singh, S.R., Adjadi, O.

“…Therefore, concerted efforts are being made at the International Institute of Tropical Agriculture (IITA) to develop bruchid-resistant cowpea varieties. …”
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Ecologically sustainable cassava plant protection (ESCaPP): a model for environmentally sound pest management in Africa por Yaninek, John S., James, B., Bieler, P.

“…The project is a collaborative effort between the International Institute of Tropical Agriculture (IITA), national plant protection staff, extension workers and farmers in Cameroon, Nigeria, Benin and Ghana, with a parallel component in Brazil involving Centro Internacional de Agricutura Tropical (CIAT) and Empresa Brasileira de Pesquisa Agropecüaria (EMBRAPA). …”
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Cassava breeding at IITA: Conference Proceedings of the Third Symposium of the International Society for Tropical Root Crops held at IITA, Ibadan, Nigeria, 29 December, 1973 por Hahn, S.K., Howland, A.K., Terry, Eugene R.

“…The breeding objectives in the Root and Tuber Improvement Programme of the International Institute of Tropical Agriculture (IITA) were laid down. …”
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Evaluation of cowpea (Vigna unguiculata (L.) Walp.) landraces to bacterial blight caused by Xanthomonas axonopodis pv. vignicola por Durojaye, H.A., Moukoumbi, Y.D., Dania, V.O., Boukar, O., Bandyopadhyay, Ranajit, Ortega Beltran, A.

“…The International Institute of Tropical Agriculture (IITA) possesses the largest collection of cowpea germplasm, including several CLR accessions. …”
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Genetic diversity and population structure of a mini-core subset from the world cowpea (Vigna unguiculata (L.) Walp.) germplasm collection por Fatokun, C., Girma, G., Abberton, Michael T., Gedil, Melaku A, Unachukwu, N.N., Oyatomi, Olaniyi, Yusuf, M., Rabbi, Ismail Y., Boukar, O.

“…The International Institute of Tropical Agriculture maintains the world’s largest collection of cowpea germplasm of over 15,000 accessions. …”
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In vitro, greenhouse, and field assessment of cassava lines for resistance to anthracnose disease caused by colletotrichum gloeosporiodes f. sp. Manihotis por Fokunang, C.N., Dixon, Alfred G.O., Ikotun, T., Asiedu, Robert, Tembe-Fokunang, E.A., Akem, C.N.

“…Fifty-three cassava lines were selected from breeding populations at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria and screened in vitro for resistance to cassava anthracnose disease (CAD). …”
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Development of micropropagation system for yam (Dioscorea spp.) using somatic embryogenesis por Ossai, C., Balogun, M., Maroya, N., Asiedu, Robert

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Trial design and analysis for onfarm adaptive research: a 1988 maize trial in the Mono Province of Benin por Versteeg, M.N., Huӱsman, A

“…On-farm Adaptive Research (OFAR) In an alftsol area In Southern Benin (Mono Province) started in 1986 with the introduction of a collaborative project of the Direction de la Recherche Agronomique (DRA) of Benin, the Royal Tropical Institute (KIT) Amsterdam, and the International Institute of Tropical Agriculture (IlTA) Nigeria. Major constraints to agricultural development are: • declining soil fertility caused by shorter fallows: • reduction in average farm size because of the Increase in rural population: • low resource productivity in food crop production due to the predominant use of manual labor (seasonal shortages) and the non-utilization of inputs such as fertilizers and pesticides; and • low risk-bearing capacity of farmers who are confronted with highly variable incomes from agriculture. …”
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Using a participatory approach and legume integration to increase the productivity of early maturing maize in the Nigerian Sudan Savannas por Kamara, A.Y., Ajeigbe, Hakeem A., Ndaghu, N., Kamsang, L., Ademulegun, T., Solomon, R.

“…The IPs comprised researchers from Bayero University, Kano; Institute for Agricultural Research, Zaria; International Institute of Tropical Agriculture; state and local government extension programs in Kano and Katsina states; input and output dealers; community-based organisations; and media organisations in the two states. …”
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An integrated molecular and conventional breeding scheme for enhancing genetic gain in maize in Africa por Gedil, Melaku A, Menkir, A.

“…Accordingly, the maize improvement program within International Institute of Tropical Agriculture (IITA) is undergoing a process of modernization through the introduction of innovative tools and new schemes that are expected to enhance genetic gains and impact on smallholder farmers in the region. …”
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Gender and access to cowpea innovations in West Africa: a review of some critical issues por Adetonah, S., Nouhoheflin, S.T., Aitchedji, C.

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Macropropagation as an innovative technology: lessons and observations from projects in Cameroon por Lefranc, L.M., Lescot, T., Staver, Charles, Kwa, M., Michel, I., Nkapnang, I., Temple, L., Dubois, E.

“…In three provinces of Cameroon, three projects promoted diverse new technologies, including the ‘plantlet from stem bits’ (PIF) horticultural propagation method developed by the Centre Africain de Recherches sur Bananiers et Plantains (CARBAP) and new varieties from the Fundación Hondureña de Investigación Agrícola (FHIA), the International Institute of Tropical Agriculture (IITA) and CARBAP to improve plantain production. …”
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The relative resistance of cassava cultivars to African Cassava Mosaic Disease (ACMD) as determined by two methods: ranksum and the area under the disease progress curve por Ariyo, O.A., Dixon, A.G.O., Atiri, G.I.

“…Twenty-five newly bred improved cassava cultivars, twenty-three improved from the International Institute of Tropical Agriculture and two local cultivars were evaluated for their relative resistance to African cassava mosaic begomovirus disease (ACMD) at Ibadan, in an area of high disease pressure representative of the forest/savanna transition zone of Nigeria. …”
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Cassava Annual Report 2019 por International Center for Tropical Agriculture

“…The Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) has supported cassava farmers for nearly five decades since CIAT created its Global Cassava Program in the early 1970s, prioritizing cassava research on the Latin American germplasm to provide solutions to the crop’s production and sustainability challenges in its home as well as in Africa and SEA, working with partners such as the International Institute of Tropical Agriculture (IITA). 50 years on, the Program continues to deliver on its initial objective, embracing the challenges outlined in the United Nations’ Sustainable Development Goals which guide its theory of change path to deliver impact. …”
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Genomic analysis of selected maize landraces from Sahel and Coastal west Africa reveals their variability and potential for genetic enhancement por Nelimor, C., Badu-Apraku, Baffour, Garcia-Oliveira, A.L., Tetteh, A., Agre, P., N’guetta, A.S.P., Gedil, Melaku A

“…The overall goal of this study was to assess the genetic diversity and population structure of a maize panel of 208 accessions; comprising landrace gene pools from Burkina Faso (58), Ghana (43), and Togo (89), together with reference populations (18) from the maize improvement program of the International Institute of Tropical Agriculture (IITA). Genotyping the maize panel with 5974 DArTseq-SNP markers revealed immense genetic diversity indicated by average expected heterozygosity (0.36), observed heterozygosity (0.5), and polymorphic information content (0.29). …”
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Developing high-yielding Striga-resistant maize in sub-Saharan Africa por Badu-Apraku, Baffour, Fakorede, M.A.B., Akinwale, R.O., Adewale, Samuel A., Akaogu, I.C.

“…The International Institute of Tropical Agriculture (IITA), in collaboration with national scientists, have used team approach to investigate how best to solve the problem. …”
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Evaluation of nutrient parameters of selected African accessions of Bambara groundnut (Vigna subterranea (L.) verdc.) por Atoyebi, J.O., Osilesi, O., Adebawo, O., Abberton, Michael T.

“…Verdc), assembled at the International Institute of Tropical Agriculture, IITA, Ibadan, Nigeria were analysed for important nutrients parameters including moisture content, carbohydrate, protein, crude fibre, total sugar, fat, starch, ash and minerals, based on standard and established protocols at the Crop Utilisation laboratory, IITA, Ibadan, Nigeria. …”
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