Resultados de búsqueda - "M"

Characterising the diversity of smallholder farming systems and their constraints and opportunities for innovation: a case study from the northern region, Ghana por Kuivanen, K.S., Álvarez, S., Michalscheck, Mirja, Adjei-Nsiah, Samuel, Descheemaeker, Katrien K., Mellon-Bedi, S., Groot, Jeroen C.J.

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Rift Valley fever virus seroprevalence among ruminants and humans in northeast Kenya por Lindahl, Johanna F., Njeru, I., Karanja, J., Grace, Delia, Bett, Bernard K.

“…Samples were tested with a competitive ELISA detecting both IgM and IgG antibodies. Overall seroprevalence was 21.9%, and univarible analyses could find no difference between the three areas, but men were found to be significantly more seropositive than women (26.2 and 18.8% respectively, p=0.004). …”
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High selfing rate, limited pollen dispersal and inbreeding depression in the emblematic African rain forest tree Baillonella toxisperma – Management implications por Duminil, J., Mendene Abessolo, D.T., Ndiade Bouroboue, D., Doucet, J.L., Loo, J., Hardy, Olivier J.

“…The mean pollen dispersal distance was relatively low for such a low-density population species (estimated to be 690 or 777 m depending on analysis method) and, together with a low mean number of pollen donors (NEP = 2.76), it suggests a pattern of nearest-neighbour mating where allo-pollen could be a limiting factor. …”
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Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling por Lacombe, Guillaume, Ribolzi, Olivier, Rouw, Anneke de, Pierret, A., Latsachak, K., Silvera, N., Dinh, R.P., Orange, Didier, Janeau, Jean L., Soulileuth, B., Robain, H., Taccoen, A., Sengphaathith, P., Mouche, E., Sengtaheuanghoung, Oloth, Tran Duc, T., Valentin, Christian

“…An observatory including long-term field measurements of fine-scale land-use mosaics and of hydrometeorological variables has been operating in several headwater catchments in tropical southeast Asia since 2000. The GR2M water balance model, repeatedly calibrated over successive 1-year periods and used in simulation mode with the same year of rainfall input, allowed the hydrological effect of land-use change to be isolated from that of rainfall variability in two of these catchments in Laos and Vietnam. …”
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Production, marketing and value chain mapping of 'Srijana' tomato hybrid seed in Nepal por Magar, D.B.T., Gauchan, D.

“…Approximately 0.3 million NRs (US $ 3,000) profit was estimated through the production of Srijana tomato seed in 0.05 hectares (500 m2) of land area. Agro-vets (private sector seed dealers) were the major actors receiving higher profit margins for supplying the seed from producers to farms. …”
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Replacing two conserved amino acids, (Asn-52 to Val and Try-67 to phe), in the Iso-1-cytochrome c gene has little effect on the function of the protein. por McOdimba, F.A.

“…Kinetic assays using polarographic method with purified beef heart cytochrome oxidase showed similarities between the wild type and mutant proteins in the characteristic two activity sites on the oxidase with similar V max l & V m',,2 and Kml around the micro molar range and Km2 around the nano molar range for both proteins, suggesting that the mutations did not affect the conformational structure of the cytochrome c molecule.…”
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Identification des Facteurs discriminants majeurs de la presence des glossines dans une zone agro-pastorale du Burkina Faso. Interet pour la prevision du risque trypanosomien. por La Racque, S. de. S.

“…Les systèmes d'informations géographiques utilisés permettent de combiner les différentes couches d'informations recueillies, toutes géoréférencées, qui concernent l'entomologie (3600 glossines capturées, 1 piège posé tous les 100 m. sur 120 km de réseau hydrographique), la parasitologie (méthodes classiques approfondies par des analyses PCR), sur les vecteurs et le bétail (animaux sentinelles), le milieu naturel (70 paramètres caractérisant principalement les formations végétales, le cours d'eau et sa fréquentation) et en particulier l'analyse des paysages de vallées, l'occupation du sol et sa dynamique (parcellaire agricole), la distribution du bétail (recensement exhaustif, typologie de producteurs) et les différents modes de pratiques pastorales (ancienneté, sédentarisation, points d'abreuvement). …”
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Development of molecular marker for pro-vitamin A carotenoids in cassava por Gedil, Melaku A, Enok, L.

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Physical and sensory properties of biofortified fresh yellow maize: varietal and harvesting time effects on physical and sensory properties of biofortified fresh yellow maize por Alamu, O.E., Maziya-Dixon, B.B., Olaofe, O.

“…The maize samples for colour properties were freeze-dried ,pulverized and sieved to pass through 500μm sieve . The fresh yellow maize flour samples were analysed for colour properties (L*, a* and b*) . …”
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Additional fungal pathogens por Schwartz, Howard F.

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Beetle-transmitted viruses por Morales, Francisco José, Gamez, R.

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Nematodes por Abawi, G.S., Varón de Agudelo, Francia

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Additional problems por Schwartz, Howard F.

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La fisiología de la planta y la productividad del cultivo por Riveros, Guillermo, Rodríguez, Nuvia Stella

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Manejo del suelo en la Altillanura de los Llanos Orientales de Colombia por Gómez, Jaime

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Arroz rojo en Colombia: comportamiento y riesgos por Clavijo, Jairo, Montealegre, Fabio

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Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in west Africa por Abdulmalik, R.O., Menkir, A., Meseka, S.K., Unachukwu, N.N., Ado, S.G., Olarewaju, J.D., Aba, D.A., Hearne, S., Crossa, J., Gedil, Melaku A

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Changes in soil properties and nematode population status under planted and natural fallows in land use systems of southern Cameroon por Banful, B., Hauser, S.

“…In each village, experiments were set up in a 4–5 year-old bush fallow dominated by Chromolaena odorata (L.) R. M. King and H. Rob and a more than 20 year-old secondary forest. …”
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Does crop diversity contribute to dietary diversity? evidence from integration of vegetables into maize‑based farming systems por Rajendran, S., Afari-Sefa, Victor, Shee, Apurba, Bocher, T., Bekunda, Mateete A., Dominick, I., Lukumay, Philipo J.

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Development of molecular genomic tools for verification of intergeneric hybrids between castor bean (Ricinus communis L.) and cassava (Manihot esculenta Crantz) por Gedil, Melaku A, Kolade, F., Raji, A., Ingelbrecht, I.L., Dixon, A.

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