Resultados de búsqueda - "ecology"

IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria por Kouakou, A.G., Ogundapo, A.T., Smale, M., Jamora, Nelissa, Manda, J., Abberton, Michael T.

“…For data analysis, ecological indices of spatial diversity were employed, and a conditional recursive mixed-process model and a multinomial endogenous treatment effect model were developed. …”
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Harnessing genotype-by-environment interaction to determine adaptability of advanced cowpea lines to multiple environments in Uganda por Abiriga, F., Ongom, P.O., Rubaihayo, P.R., Edema, Richard, Gibson, P.T., Dramadri, I., Orawu, M.

“…This study was conducted to determine the yield stability of advanced cowpea lines in diverse agro-ecological zones of Uganda in order to facilitate documentation requirements for national performance trials (NPT). …”
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Khaya revisited: Genetic markers and morphological analysis reveal six species in the widespread por Bouka, Gaël U.D., Doumenge, Charles, Ekué, Marius, Daïnou, Kasso, Florence, Jacques, Degen, Bernd, Loumeto, Jean Joël, McKey, Doyl, Hardy, Olivier J.

“…Khaya species are very close morphologically and some contain considerable phenotypic and ecological diversity, raising the question of their delimitation: this is the case of Khaya anthotheca s.l. …”
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Identification of early and extra-early maturing tropical maize inbred lines with multiple disease resistance for enhanced maize production and productivity in sub-Saharan Africa por Bankole, F., Badu-Apraku, Baffour, Salami, A.O., Falade, Titilayo D.O., Bandyopadhyay, R., Ortega Beltran, A.

“…Forty-nine early-maturing (90-95 days to physiological maturity, EM) and 55 extra-early-maturing (80-85 days to physiological maturity, EEM) IITA inbred lines were identified as resistant to NCLB in field evaluations in multiple agro-ecologies of Nigeria in 2017 and 2018. From each maturity group, 30 most resistant inbreds were selected for evaluation for resistance to SCLB and CLS using a detached leaf assay. …”
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Molecular Characterization and DNA Fingerprinting of Xanthomonas oryzae pv. oryzae Isolates from Climate Change Prone Areas in East Africa por Onasanya, A., Kiepe, P., Basso, A., Nkima, G., Nwilene, F.E., Ingelbrecht, I.L., Lamo, J., Ekperigin, M.M., Onasanya, R.O., Oyelakin, O., Winter, S., Sere, Y.

“…Durable resistance rice cultivars would need to overcome both GrpA and GrpB Xoo genotypes in order to survive after their deployment into different rice ecologies in East Africa…”
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Genotype X environment interaction and stability analysis in upland rice (Oryza sativa L.) varieties in Ethiopia por Abebe, D., Mohammed, W., Abebe, A.T.

“…Twenty rice varieties were laid out in a randomized complete block design with three replications and evaluated across six locations that represent the major rice growing agro-ecologies in the country. The combined analysis of variance over environments revealed significant differences among genotypes, environments and GEI for grain yield. …”
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Anthrax hotspot mapping in Kenya support establishing a sustainable two-phase elimination program targeting less than 6% of the country landmass por Gachohi, J., Bett, Bernard K., Otieno, Fredrick, Mogoa, E., Njoki, P., Muturi, Mathew, Mwatondo, Athman, Osoro, E., Ngere, I., Dawa, J., Nasimiyu, C., Oyas, H., Njagi, O., Canfield, S., Blackburn, J., Njenga, K.

“…Using data collected from previous (n = 86) and prospective (n = 132) anthrax outbreaks, we enhanced prior ecological niche models (ENM) and added kernel density estimation (KDE) approaches to identify anthrax hotspots in Kenya. …”
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Wheat yield gaps across smallholder farming systems in Ethiopia por Silva, ‪João Vasco, Reidsma, Pytrik, Baudron, Frédéric, Jaleta, Moti, Tesfaye, Kindie, Ittersum, Martin K. van

“…There were small differences in the relative contribution of the intermediate yield gaps to the overall yield gap across agro-ecological zones, administrative zones, and farming systems. …”
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Agronomic and physiological indices for reproductive stage heat stress tolerance in green super rice por Zafar, Syed Adeel, Arif, Muhammad Hamza, Uzair, Muhammad, Rashid, Umer, Naeem, Muhammad Kashif, Rehman, Obaid Ur, Rehman, Nazia, Zaid, Imdad Ullah, Farooq, Muhammad Shahbaz, Zahra, Nageen, Saleem, Bilal, Xu, Jianlong, Li, Zhikang, Ali, Jauhar, Ali, Ghulam Muhammad, Yang, Seung Hwan, Khan, Muhammad Ramzan

“…Green Super Rice (GSR) is an effort to develop an elite rice type that can withstand multiple environmental stresses and maintain yield in different agro-ecological zones. The current study was performed to assess the effect of heat stress on agronomic and physiological attributes of GSR at flowering stage. …”
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Gendered evaluation of impacts of landscape degradation and restoration on ecosystem services: perspectives from paired husbands and wives in Ethiopia por Mponela, Powell, Aynekulu, Ermias, Ebrahim, Mohammed, Abate, Tsion, Abera, Wuletawu, Elias, Marlène, Tamene, Lulseged D.

“…The study revealed large gender differences in perceptions of landscape scenic beauty and habitat quality in terms of wildlife, pollinators, beneficial plants, weeds, and pests and diseases as indicators of ecological health. Despite that, the paired husbands and wives live together and share resources, their perceptions and valuation of degradation and restoration were divergent. …”
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Solar-based irrigation systems as a game changer to improve agricultural practices in Sub-Sahara Africa: a case study from Mali por Birhanu, B.Z., Sanogo, K., Traoré, S.S., Minh, Thai Thi, Kizito, Fred

“…Methods: This study used socio-economic data from 112 farm households and Boolean and Fuzzy methods to understand farmers' perceptions and identify suitable areas to implement Solar Based Irrigation Systems (SBISs) in the agro-ecologies of Bougouni and Koutiala districts of southern Mali. …”
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Pathways and determinants of sustainable energy use for rice farms in India por Nayak, Harisankar, Parihar, Chiter Mal, Aravindakshan, S., Silva, J. V., Krupnik, Timothy J., McDonald, Andrew J., Kakraliya, S., Sena, Dipaka Ranjan, Kumar, V., Sherpa, S., Bijarniya, D., Singh, L. K., Kumar, M., Choudhary, Kajod Mal, Kumar, S., Kumar, Y., Jat, H.S., Sidhu, H. S., Jat, Mangi Lal, Sapkota, Tek Bahadur

“…The evidence provided in this study can help to identify pathways toward sustainable energy use for future rice production in other ecologies too. Similar type of analysis can be carried out for other parameters like profitability and carbon footprint to explore where farmers are spending extra monetary and carbon inputs, and not getting additional yield benefits.…”
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The contribution of trees and green spaces to household food security in eThekwini Metro, KwaZulu-Natal por Bhebhe, Q.N., Ngidi, M. S. C., Siwela, M., Ojo, T. O., Hlatshwayo, S. I., Mabhaudhi, Tafadzwanashe

“…South Africa is renowned worldwide for its rich biodiversity and a vast body of traditional knowledge among those who consume forest foods. However, despite ecological diversity, frequent barriers remain to getting diversified household diets. …”
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Yield performance and stability analysis of promising soybean genotypes under contrasting environments in the semi-arid zone of Sudan por Ngalamu, T., Bulli, P., Meseka, S.K.

“…Background: The challenge to food security posed by climate change and coupled with the substantial rise in the global population, necessitate a shift in crop improvement programmes towards developing crop cultivars with stable and high yield potentials across a wide range of agro-ecological conditions. Methods: New high yielding crop varieties with stable performance across environments are enabling the expansion of their production area into non-traditional environments with semi-arid climates. …”
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Maturity class and P effects on soya bean grain yield in the moist Savanna of west Africa por Ogoke, I., Carsky, R., Togun, A., Dashiell, Kenton E.

“…Field trials were replicated at four sites in the moist savanna ecological zone of West Africa to study the effect of maturity class and phosphorus (P) rate on grain yield and total protein yield (TPY) of some new soya bean varieties. …”
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Agroforestry Matches the Evolving Climate Change Mitigation and Adaptation Agenda in Asia and Africa por Noordwijk, M. van, Catacutan, D.C., Duguma, L.A., Pham, T.T., Leimona, B., Dewi, S., Bayala, J., Minang, Peter A.

“…The concepts jointly interact with data, feedbacks, institutions and goals as part of complex, adaptive social-ecological systems.…”
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Factors affecting fruit and vegetable consumption and purchase behavior of adults in sub-Saharan Africa: A rapid review por Stadlma, Barbara, Trübswasser, Ursula, McMull, Stepha, Karan, Alice, Wurzinger, Maria, Hundsche, Laura, Riefl, Petra, Lem, Stefanie, Brouwer, Inge D., Sommer, Isolde

“…Our conceptual framework is based on a socio-ecological model which has been adapted to settings in LMICs and Africa. …”
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Diversification for sustainable and resilient agricultural landscape systems por Reckling, M., Watson, C., Whitbread, Anthony M., Helming, K.

“…Contributions from all continents highlighted regional specificities related to diversification and include research from natural and social sciences, with inter- and transdisciplinary approaches including synthesis of knowledge (reviews), empirical studies with experiments as well as assessments with interviews in case studies: Model-based design of crop diversification, the role of digitalization for achieving sustainability in the European context, ecological engineering for rice pest suppression in China, the role of cereal species mixtures in Ethiopian smallholder farmers, diversified planting in arid irrigation areas in northwestern China, integration of legumes in European and Canadian cropping systems, screening of native forage legumes for northern Swedish grassland systems, cropping system diversification of smallholder farmers in south-central Bangladesh, identification of how farmers imagine diversified landscapes in southern Idaho in the US, farm diversification affecting impacts from COVID-19 across Europe, the role of diversified farming in Mato Grosso Brazil, diversification and soil management measures in Germany, value chain formation for the scaling of crop diversification, and the design process with farmers and scientists for the transition toward legume-supported farming in Europe. …”
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Genetic diversity assessment of winged bean [Psophocarpus tetragonolobus (L.) DC.] accessions using agronomic and seed morphometric traits por Bhadmus, A., Abberton, M., Idehen, E.O., Ekanem, U.O., Paliwal, R., Oyatomi, O.

“…To bridge this gap, thirty accessions of winged beans sourced from the Gene Bank of the International Institute of Tropical Agriculture (IITA), Ibadan, were evaluated for seed morphometric and selected agro-morphological traits at three agro-ecological zones in Nigeria. The data obtained were subjected to analysis of variance (ANOVA), principal component (PC) analysis, cluster analysis, and correlation analysis. …”
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Transition Pathway Toward Agroecology in Agroforestry Systems: Case of Kesra por Shiri, Zahra, Alary, Veronique, Ouerghemmi, Hassen, Dhraief, Mohamed Zied, Oueslati-Zlaoui, Meriem, Majri, Rihab, Rudiger, Udo, Frija, Aymen, Idoudi, Zied, Souissi, Asma, Dhehibi, Boubaker, Mannai, Amal, Rekik, Mourad, Rejeb, Hichem

“…The application of a holistic agroecological transition approach in this rural mountain area requires an inclusive co-design which takes into consideration the socio-ecological context (Natural resources use, agricultural practices, agroforestry, etc.). …”
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