Resultados de búsqueda - "Nigeria"

Gender norms and their implications for banana production and recovery in west Africa por Nkengla-Asi, L., Olaosebikan, O.D., Che, V.S., Ngatat, S., Zandjanakou-Tachin, Martine, Hanna, R., Kumar, P. Lava

“…This study uses the social relations framework to explore gender norms and relations surrounding banana production and banana bunchy top disease (BBTD) containment in six pilot communities in Cameroon and Nigeria. The objective of the study is to understand how gender norms and relations shape and influence access to information and benefit-sharing of productive resources among men and women banana farmers and implications for banana production recovery in the BBTD-affected regions and disease management. …”
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Effect of detopping on disease incidence and symptom severity of African cassava mosaic virus disease (ACMD) on some newly developed cassava cultivars form landraces introgression por Ariyo, O., Atiri, G., Dixon, A.

“…Twenty-five cassava genotypes were exposed to natural infection by African cassava mosaic disease (ACMD) in plots at the International Institute of Tropical Agriculture (IITA), Ibadan (forest-savanna transition zone), Nigeria. The effect of removing the shoot tips (detopping) of cassava plants on disease incidence and symptom severity was assessed fortnightly for 14 weeks, starting 8 weeks after planting (WAP). …”
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Overview of banana and plantain (Musa spp.) improvement in Africa: past and future por Lorenzen, J., Tenkouano, A., Bandyopadhyay, Ranajit, Vroh, B., Coyne, Danny L., Tripathi, L.

“…Major programs for banana breeding in Africa are located in Nigeria (International Institute of Tropical Agriculture), Cameroon (Centre Africain de Recherche sur Bananiers et Plantains), and Uganda (National Agricultural Research Organization/International Institute of Tropical Agriculture). …”
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Review of varietal change in roots, tubers and bananas: consumer preferences and other drivers of adoption and implications for breeding por Thiele, Graham, Dufour, Dominique, Vernier, Philippe, Mwanga, Robert O.M., Parker, Monica, Schulte-Geldermann, Elmar, Teeken, Béla, Wossen, Tesfamichael, Gotor, Elisabetta, Kikulwe, Enoch Mutebi, Tufan, Hale Ann, Sinelle, Sophie, Kouakou, Amani Michel, Friedmann, Michael, Polar, Vivian, Hershey, Clair H.

“…This review of the literature on varietal change in sub‐Saharan Africa looks in detail at adoption of new varieties of bananas in Uganda, cassava in Nigeria, potato in Kenya, sweetpotato in Uganda and yams in Côte d’Ivoire. …”
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Survey and management of potato pests in Uganda por Cortada, L., Coyne, D., Nakato, V., Kisitu, J., Wasukira, A., Okonya, J.

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Sexual communication of Spodoptera frugipera from west Africa: adaptation of an invasive species and implications for pest management por Haenniger, S., Goergen, Georg E., Akinbuluma, M.D., Kunert, M., Heckel, D.G., Unbehend, M.

“…When we investigated populations from Benin and Nigeria, consisting of corn-strain and rice-corn-hybrid descendants, we found no strain-specific sexual communication differences. …”
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CLIFF-GRADS Science Collaboration Series 2020 - Thematic student session: Integrated Systems por Rosenstock, Todd S., Costa, Ciniro, Ngaiwi, Mary Eyeniyeh, Ahmad, Abdulhakeem L, Leite, Fernanda, Salazar, Sara S.V.

“…Student Speakers: Mary Eyeniyeh Ngaiwi, Cameroon; Abdulhakeem Lawal Ahmad, Nigeria; Fernanda Leite, Brazil; Sara Stephanie Valencia Salazar, Colombia. …”
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Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids por Obeng-Bio, E., Badu-Apraku, Baffour, Ifie, B.E., Danquah, A., Blay, E.T., Dadzie, M.A.

“…A total of 64 inbred lines and six checks, plus 96 hybrids and four checks were evaluated under drought and well‐watered environments in Nigeria for two years. Eighteen parental lines and 54 derived hybrids were assayed for tryptophan and PVA contents. …”
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Identification of QTLs controlling resistance/tolerance to Striga hermonthica in an extra-early maturing yellow maize population por Badu-Apraku, Baffour, Adewale, Samuel A., Agre, A.P., Gedil, Melaku A, Asiedu, R.

“…In the present study, 194 F2:3 families of TZEEI 79 × TZdEEI 11 were screened at two Striga-endemic locations in Nigeria, to identify QTLs associated with S. hermonthica resistance/tolerance and underlying putative candidate genes. …”
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CLIFF-GRADS Science Collaboration Series 2020 - Thematic student session: Ruminant systems por Leahy, Sinead, Feyissa, Abraham A, Pepeeta, Bulelani, Martínez, Juan V, Arowolo, Muhammed

“…Sinead Leahy, Senior Scientist, the New Zealand Agricultural Greenhouse Gas Research Centre (NZAGRC) Student Speakers: Abraham Abera Feyissa, Ethiopia Bulelani Pepeeta, South Africa Juan de Jesus Vargas Martinez, Colombia Muhammed Arowolo, Nigeria The 2020 CLIFF-GRADS Science Collaboration Series was developed to facilitate technical capability building, knowledge transfer and international collaboration for the CLIFF-GRADS Alumni. …”
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Resistance of selected Oryza glaberrima landraces and their intra-specific breeding lines to Beninese Rice yellow mottle virus isolates por Agnoun, Y., Yelome, I., Sie, M., Albar, L., Ghesquière, A., Silué, D.

“…Two cultivars - IRGC104019 and IRGC96787 (Tog5644) - from Tanzania and Nigeria respectively - and 16 intra-specific lines were identified as highly resistant to all five isolates. …”
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Diversity of endogenous avian leukosis virus subgroup E (ALVE) insertions in indigenous chickens por Mason, A.S., Miedzinska, K., Kebede, A., Bamidele, Oladeji, Al-Jumaili, A.S., Dessie, Tadelle, Hanotte, Olivier H., Smith, J.

“…The wider diversity of ALVE in non-commercial chickens and the role of these elements in ERV-derived immunity (EDI) are yet to be investigated.In total, 974 different ALVE were identified from 407 chickens sampled from village populations in Ethiopia, Iraq, and Nigeria, using the recently developed obsERVer bioinformatics identification pipeline. …”
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Genome-wide association analysis reveals new insights into the genetic architecture of defensive, agro-morphological and quality-related traits in cassava por Rabbi, Ismail Y., Kayondo, S.I., Bauchet, Guillaume J., Yusuf, M., Aghogho, C.I., Ogunpaimo, K., Uwugiaren, R., Smith, I.A., Peteti, P., Agbona, A., Parkes, Elizabeth Y., Ezenwaka, L., Wolfe, M., Jannink, Jean-Luc, Egesi, Chiedozie N., Kulakow, Peter A.

“…We carried out a genome-wide association study (GWAS) using a panel of 5,310 clones developed at the International Institute of Tropical Agriculture - Nigeria. The population was genotyped at more than 100,000 SNP markers via genotyping-by-sequencing (GBS). …”
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Global habitat suitability of Spodoptera frugiperda (JE Smith) (Lepidoptera, Noctuidae): key parasitoids considered for its biological control por Tepa-Yotto, Ghislain T., Tonnang, Henri E.Z., Goergen, Georg E., Subramanian, S., Kimathi, E.K., Abdel-Rahman, E.M., Flo, D., Thunes, K.H., Fiaboe, K., Niassy, S., Bruce, A., Mohamed, S.A., Tamo, Manuele, Ekesi, S., Saethre, M.G.

“…Model predictions showed particularly high establishment potential of the five hymenopteran parasitoids in areas that are heavily affected by FAW (like the coastal belt of West Africa from Côte d’Ivoire (Ivory Coast) to Nigeria, the Congo basin to Eastern Africa, Eastern, Southern and Southeastern Asia and some portions of Eastern Australia) and those of potential invasion risks (western & southern Europe). …”
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Assessment of chemical properties of yellow-fleshed cassava (Manihot esculenta) roots as affected by genotypes and growing environments por Alamu, Emmanuel Oladeji, Maziya-Dixon, Busie, Lawal, O., Dixon, A.

“…Twentyeight genotypes of biofortified yellow and white-fleshed cassava were planted across four geographical areas in Nigeria and harvested for two seasons. This research analyzed the chemical properties (DM, VC, TC, and CNP) of the samples using standard laboratory procedures. …”
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Assessing effect of marker-based improvement of maize synthetics on agronomic performance, carotenoid content, combining ability and heterosis por Iseghohi, I., Abe, A., Meseka, S., Mengesha, W., Gedil, Melaku A, Menkir, A.

“…This study involved three selection cycles each of the two synthetics and their nine varietal-cross hybrids together with a released check variety was conducted across four diverse locations in Nigeria in 2018 and 2019. Environment and hybrid effects were significant on grain yield and other agronomic traits as well as provitamin A content and other carotenoids. …”
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Can it be all more simple? Manufacturing aflatoxin biocontrol products using dry spores of atoxigenic isolates of Aspergillus flavus as active ingredients por Ortega Beltran, A., Kaptoge, L., Senghor, A.L., Aikore, M.O.S., Jarju, P., Momanyi, H., Konlambigue, Matieyedou, Falade, Titilayo D.O., Bandyopadhyay, R.

“…To overcome this, a process was developed in Ibadan, Nigeria, for producing high-quality dry spores. Viability and stability of the dry spores were tested and conformed to set standards. …”
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Development of extra-early provitamin A quality protein maize inbreds with resistance/tolerance to Striga hermonthica and soil nitrogen stress por Oyekale, S.A., Badu-Apraku, Baffour, Adetimirin, Victor O., Unachukwu, N., Gedil, Melaku A

“…Seventy-six extra-early maize inbreds with provitamin A, tryptophan, and lysine qualities (TZEEIORQ) were developed to address these constraints, and four checks were assessed under Striga, low and high nitrogen conditions at three locations in Nigeria. The inbreds were further genotyped with two beta-carotene hydroxylase 1 (crtRB1) markers, and their seeds were quantified for provitamin A content. …”
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Genetic gains from selection for drought tolerance during three breeding periods in extra-early maturing maize hybrids under drought and rainfed environments por Badu-Apraku, Baffour, Obisesan, O., Adeoti, A., Obeng-Bio, E.

“…Sixty extra-early maturing hybrids developed by the International Institute of Tropical Agriculture (IITA), Ibadan, during three breeding periods: (2008–2010, 2011–2013, and 2014–2016) were assessed under managed drought and rainfed conditions across 14 environments in Nigeria to estimate the genetic gains in grain yield using linear regression analysis. …”
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Evaluation of some rice genotypes for incidence of African rice gall midge and its parasitoid (P. Diplosisae) por Ogah, E.O., Odebiyi, J.A., Omoloye, A.A., Nwilene, F.E.

“…Three major rice genotypes (Oryza sativa, Oryza glaberrima and interspecific rice, New Rice for Africa (NERICA)) are cultivated in Nigeria. In two consecutive years (2008/09), field experiments were conducted at two eco-sites, using the genotypes to determine their influence on the incidence of the gall midge and percentage parasitism by Platygaster diplosisae, Risbec (Diptera: Platygateridae), an endoparasitoid that has been identified as the most important natural enemy of AfRGM. …”
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