Resultados de búsqueda - "Chang’an"

A network-based method to detect patters of local crop biodiversity: validation at the species and infr-species levels por Thomas, M., Verzelen, N., Barbillon, P., Coomes, O.T., Caillon, S., McKey, D., Elias, Marlène, Garine, E., Raimond, C., Dounias, E., Jarvis, D., Wencelius, J., Leclerc, Christian, Labeyrie, V., Pham Hung Cuong, Nguyen Thi Ngoc Hue, Sthapit, B.R., Rana, R.B., Barnaud, Adéline, Violon, C., Arias Reyes, L.M., Latournerie Moreno, L., Santis, P. de, Massol, F.

“…These different patterns of crop diversity distribution reflect an heterogeneity in farmers’ self-organized action in cultivating and maintaining local crop diversity, which ensures the adaptability of agroecosystems to global change.…”
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Relationships between population density, fine-scale genetic structure, mating system and pollen dispersal in a timber tree from African rainforest por Duminil, J., Dainou, K., Kaviriri, D.K., Gillet, P., Loo, J., Doucet, J.L., Hardy, Olivier J.

“…Owing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees. …”
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Relaciones de competencia entre frijol y maiz en sistemas de asociacion y sus inferencias para el mejoramiento genetico por Davis, J.

“…Habit IVB attributes a high capacity to survive regardless the competence by maize, weeds, diseases, and pests. To study the change in the type of plant to an earlier-maturing plant (habit IVA) that, together with an earlier-maturing maize, allows the relay or rotational system to be extended to other crops, improved cultural practices and resistance to major diseases and pests should be included. …”
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Comportamiento en ambientes de diversos niveles de productividad de genotipos de frijol negro desarrollados en Colombia por Voysest Voysest, Oswaldo

“…The genetic changes occuring in av. productivity, adaptation, and response to environments with different levels of yield for black-colored grain material selected by CIAT during 1976-79 are examined. …”
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The acceptability of dietary tools to improve maternal and child nutrition in Western Kenya por Kram, N., Melgen, S., Kedera, E., Collison, D.K., Colton, J., Blount, W., Grant, F., Girard, Amy W.

“…Future work should quantitatively assess the impact on diet and nutrition outcomes and the underlying behavioural domains associated with changes.…”
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Crop wild relatives of the brinjal eggplant ( Solanum melongena ): poorly represented in genebanks and many species at risk of extinction por Syfert, Mindy M., Castañeda Álvarez, Nora P., Khoury, Colin K., Särkinen, Tiina, Sosa, Chrystian C., Achicanoy Estrella, Harold Armando, Bernau, V., Prohens, Jaime, Daunay, Marie-Christine, Knapp, Sandra

“…Beyond traditional research focus on close relatives of crops, we emphasize the benefits of defining a broad CWR genepool, and the importance of assessing threats to wild species when targeting localities for future collection of CWR to improve crop breeding in the face of environmental change.…”
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Nutrition promotion messages: The effect of information on consumer sensory expectations, experiences and emotions of vitamin A-biofortified sweet potato por Lagerkvist, Carl Johan, Okello, J.J., Muoki, Penina Ngusye, Heck, S., Prain, Gordon

“…However, vitamin A biofortification involves changes in other product attributes such as colour and taste that may be undesirable to some consumers. …”
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Climate smart agriculture rapid appraisal (CSA-RA): A tool for prioritizing context-specific climate smart agriculture technologies por Mwongera, Caroline, Shikuku, Kelvin Mashisia, Twyman, Jennifer, Läderach, Peter R.D., Ampaire, Edidah L., Asten, Piet J.A. van, Twomlow, Stephen, Winowiecki, Leigh Ann

“…The CSA-RA employs gender-disaggregated methods, including gender differences in perceptions of climate change and its impacts. The CSA-RA combines common participatory rural appraisal (PRA) and rapid rural appraisal (RRA) tools into one methodology, that disaggregates the gender dimension, and includes resource mapping; climate calendars; historical calendars; cropping calendars; organization mapping; transect walks; key informant interviews; farmer interviews; and pairwise ranking matrix. …”
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A single mutation in the GSTe2 gene allows tracking of metabolically based insecticide resistance in a major malaria vector por Riveron, J., Yunta, C., Ibrahim, S., Djouaka, R.F., Irving, H., Menze, B., Ismail, H., Hemingway, J., Ranson, H., Albert, A., Wondji, C.S.

“…However, its underlying molecular basis, crucial for successful resistance management, remainspoorly characterized.Results: Here, we demonstrate that the single amino acid change L119F in an upregulated glutathione S-transferasegene, GSTe2, confers high levels of metabolic resistance to DDT in the malaria vector Anopheles funestus. …”
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Long term effects of reduced fertilizer rates on millet yields and soil properties in the West-African Sahel por Adams, Alexis M., Gillespie, Adam W., Kar, Gourango, Koala, Saidou, Ouattara, Badiori, Kimaro, Anthony A., Bationo, B. André, Akponikpè, Pierre B.I., Schoenau, Jeff J., Peak, Derek

“…Crop residue or manure addition at 2700 kg ha−1 with fertilizer did not improve SOC but buffered pH by 0.3 units, provided nutrients beyond N and P, and changed the forms C and N functional groups in soil organic matter.…”
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Replication Data for: Climate smart agriculture rapid appraisal (CSA-RA): A tool for prioritizing context-specific climate smart agriculture technologies por Mwongera, Caroline, Shikuku, Kelvin Mashisia, Twyman, Jennifer, Läderach, Peter R.D., Ampaire, Edidah L., Asten, Piet J.A. van, Twomlow, Stephen, Winowiecki, Leigh Ann

“…The CSA-RA employs gender-disaggregated methods, including gender differences in perceptions of climate change and its impacts. The CSA-RA combines common participatory rural appraisal (PRA) and rapid rural appraisal (RRA) tools into one methodology, that disaggregates the gender dimension, and includes resource mapping; climate calendars; historical calendars; cropping calendars; organization mapping; transect walks; key informant interviews; farmer interviews; and pairwise ranking matrix. …”
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Mapping direct seeded rice in Raichur district of Karnataka, India por Gumma, Murali K., Uppala, D., Mohammed, I.A., Whitbread, Anthony M., Mohammed, I.R.

“…To facilitate planning and to track farming practice changes, this study presents techniques to spatially distinguish between direct seeded and transplanted rice fields using multiple-sensor remote sensing imagery. …”
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Evaluation of common bean (Phaseolus vulgaris L.) genotypes for drought stress adaptation in Ethiopia por Darkwa, K., Ambachew, Daniel, Mohammed, H., Asfaw, A., Blair, Matthew W.

“…Drought stress linked with climate change is one of the major constraints faced by common bean farmers in Africa and elsewhere. …”
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Determinants of fertilizer microdosing-induced yield increment of pearl millet on an acid sandy soil por Ibrahim, A., Abaidoo, Robert C., Fatondji, D., Opoku, A.

“…Fertilizer microdosing did not significantly change soil pH in the root zone. It is concluded that the positive effect of fertilizer microdosing in increasing millet yield results from the better exploitation of soil nutrients due to early lateral roots proliferation within the topsoil.…”
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Interactive effects between nitrogen fertilization and elevated CO2 on growth and gas exchange of papaya seedlings por Cruz, J.L., Alves, A.A.C., LeCain, D.R., Ellis, David, Morgan, J.A.

“…Elevated atmospheric CO2 will change the requirements plants have for minerals, mainly nitrogen, altering the relationship between nutrient demand and plant growth. …”
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Capturing neutral and adaptive genetic diversity for conservation in a highly structured tree species por Rodríguez Quilon, I., Santos del Blanco, L., Serra-Varela, M.J., Koskela, Jaarko, González Martínez, S.C.

“…Preserving intraspecific genetic diversity is essential for long‐term forest sustainability in a climate change scenario. Despite that, genetic information is largely neglected in conservation planning, and how conservation units should be defined is still heatedly debated. …”
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Effects of prescribed seasonal burning on A combretum-commiphora plant community in South Central Kenya. por Kinyamario, J.I.

“…Numbers of plants for most species showed no significant change due to treatment. Composite plant canopy cover was highly significant (p .001)reduced by January (dry season)burn. …”
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Dairy production systems and the adoption of genetic and breeding technologies in Tanzania, Kenya, India and Nicaragua por Ojango, Julie M.K., Wasike, C.B., Enahoro, Dolapo K., Okeyo Mwai, Ally

“…Development of the livestock industry and its role in poverty alleviation in developing countries depends on how adaptive the production systems are to changing global environmental and economic trends. …”
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Effect of migration and mating status of the legume pod borer, Maruca vitrata (Fabricius) (Lepidoptera: Crambidae) on the efficacy of synthetic sex pheromone traps in West Africa por Adati, T., Tamò, Manuele, Koji, S., Downham, M.C.A.

“…A hypothesis was presented to explain the seasonal changes in reproduction and migration of the pest as follows: M. vitrata moths are sexually active in the south humid zone, thus they can mate. …”
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CGIAR Research Program On Water, Land and Ecosystems: Full Proposal 2017-2022 (Updated July 31, 2016) por CGIAR Research Program on Water, Land and Ecosystems

“…These are: 1) a focus on sustainability and social equality, especially with reference to women and youth to deliver on the newly adopted SDGs; 2) an increased emphasis on restoration of degraded soils and landscapes; 3) building resilience within agri-food systems, particularly in Africa and South Asia through improved water management; 4) addressing the increasing influence of urbanization on rural landscapes and agro-ecosystems; 5) reducing risk and uncertainty for agricultural systems; and 6) finding the right levers for change in the complex environment of Natural Resources Management, including in the CGIAR target countries.…”
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