Resultados de búsqueda - "Subtropics"

Agrobacteriummediated genetic transformation of yam (Dioscorea rotundata): an important tool for functional study of genes and crop improvement por Nyaboga, E., Tripathi, J.N., Manoharan, R., Tripathi, L.

“…Yam is an important crop in the tropics and subtropics providing food security and income to over 300 million people. …”
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Index-based agricultural insurance products: challenges, opportunities and prospects for uptake in sub-Sahara Africa por Ntukamazina, Nepomuscene, Onwonga, Richard N., Sommer, Rolf, Rubyogo, Jean-Claude, Mukankusi, Clare Mugisha, Mburu, John, Kariuki, Rahab

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Delineation of pona complex of yam in Ghana using SSR markers por Otoo, E., Akromah, R., Kolesnikova-Allen, M., Asiedu, Robert

“…Yam (Dioscorea spp), a multi-species, polyploid, and vegetatively propagated tuber crop, is cultivated widely in the tropics and subtropics. Over 95% of the world's yam production occurs in West and Central Africa where white yam (Dioscorea rotundata Poir.) is the most important among cultivated species. …”
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Assessing the effects of policy change on households and children’s milk consumption in peri-urban Nairobi, Kenya por Schneider, F.A.

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Biocontrol agents in combination with Moringa oleifera extract for integrated control of Sclerotiumcaused cowpea dampingoff and stem rot por Adandonon, A., Aveling, T.A, Labuschagne, N., Tamo, Manuele

“…Damping-off and stem rot disease-causing Sclerotium rolfsii has been reported as a destructive soil-borne pathogen of numerous crops, especially in the tropics and subtropics. Trials were conducted to test the efficacy of biocontrol agents alone or combined with Moringa oleifera leaf extracts for the control of the disease. …”
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Delineate soil characteristics and carbon pools in grassland compared to native forestland of India: A meta-analysis por Padbhushan, Rajeev, Sharma, Sheetal, Rana, D.S., Kumar, Upendra, Kohli, Anshuman, Kumar, Rajkishore

“…Grassland is a highly dynamic land use system and it provides vital ecosystem services, mainly consisting of carbon storage in the tropics and subtropics. The objective of this study was to delineate grassland in India according to soil characteristics and carbon pools in comparison to native forestland, and to discuss management strategies for improving soil carbon (SC) storage in grassland. …”
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Chapter 6. Maize improvement for drought-limited environments por Edmeades, Gregory O., Bänziger, Marianne, Ribaut, Jean-Marcel

“…It is generally agreed that the two largest causes of maize yield loss in the tropics and subtropics are drought and inadequate fertility, and, for this reason, breeding for tolerance to these stresses has become a major focus of CIMMYT's Maize Program. …”
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Lifetime under-nutrition and lactation performance of Zebu and Zebu x Holstein cows in the tropics por Jenet, A., Tegegne, Azage, Osuji, P.O., Yimegnuhal, A., Kreuzer, M., McCrabb, G.J., Fernández Rivera, S.

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Towards an assessment of on-farm niches for improved forages in Sud-Kivu, DR Congo por Paul, Birthe K., Muhimuzi-Lwaboshi, Fabrice, Bacigale, Samy B., Wimba, Benjamin M.M., Chiuri, Wanjiku L., Amzati, Gaston S., Maass, Brigitte L.

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Genomics of yams, a common source of food and medicine in the tropics por Mignouna, Hodeba D., Abang, Mathew M., Asiedu, Robert

“…Yams (Dioscorea spp., Dioscoreaceae), grown either for their starchy tubers or medicinal properties, are important crops in the tropics and subtropics. Yams broaden the food base and provide food security and income to over 300 million people. …”
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A participatory appraisal of Imperata management strategies for sustainable land use in the subhumid savanna of Nigeria por Kormawa, P.M., Ellis-Jones, J., Ibana, S., Chikoye, David, Schulz, S., Nielsen, O.K., Douthwaite, Boru, Udensi, U.E.

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Genes impinging on tolerance to seasonal abiotic stresses in peach por Lloret, Alba, Badenes, María L., Ríos, Gabino

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Estimation of genetic gain for resistance to spittlebugs (Hemiptera: Cercopidae) in the Interspecific Urochloa CIAT Breeding Program using historical data por Hernández, Luis Miguel, Sandoval, Karol, Aparicio, Johan Steven, Ariza, Daniel, Espitia, Paula A., Castiblanco, Valheria, Jauregui, Rosa

“…Grasses from the genus Urochloa are sown worldwide throughout the tropics and subtropics. Urochloa grasses have different attributes that make them an important forage resource, however susceptibility to abiotic and biotic stresses are also common. …”
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Exploring the bush yam (Dioscorea praehensilis benth) as a source of agronomic and quality trait genes in white guinea yam (dioscorea rotundata poir) breeding por Adewumi, A.S., Agre, A.P., Asare, P.A., Adu, M.O., Taah, K.J., Mondo, J., Akaba, S.

“…Yam (Dioscorea spp.) is an important food security crop in the tropics and subtropics. However, it is characterized by a narrow genetic base within cultivated and breeding lines for tuber yield, disease resistance, and postharvest traits, which hinders the yam breeding progress. …”
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The livestock-climate-poverty nexus: A discussion paper on ILRI research in relation to climate change por Thornton, Philip K., Steeg, Jeannette van de, Notenbaert, An Maria Omer, Herrero, Mario

“…Climate change will have severe impacts in many parts of the tropics and subtropics. Despite the importance of livestock to poor people and the magnitude of the changes that are likely to befall livestock systems, the intersection of climate change and livestock is a relatively neglected research area. …”
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Selection of provenances to adapt tropical pine forestry to climate change on the basis of climate analogs por Leibing, C., Signer, J., Zonneveld, M. van, Jarvis, Andy, Dvorak, W.

“…Pinus patula and Pinus tecunumanii play an important role in the forestry sector in the tropics and subtropics and, in recent decades, members of the International Tree Breeding and Conservation Program (Camcore) at North Carolina State University have established large, multi-site provenance trials for these pine species. …”
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Genetic Differentiation among Maruca vitrata F. (Lepidoptera: Crambidae) Populations on Cultivated Cowpea and Wild Host Plants: Implications for Insect Resistance Management and Bi... por Agunbiade, T.A., Coates, B.S., Datinon, B., Djouaka, R.F., Sun, W., Tamo, Manuele, Pittendrigh, Barry Robert

“…Maruca vitrata Fabricius (Lepidoptera: Crambidae) is a polyphagous insect pest that feeds on a variety of leguminous plantsin the tropics and subtropics. The contribution of host-associated genetic variation on population structure wasinvestigated using analysis of mitochondrial cytochrome oxidase 1 (cox1) sequence and microsatellite marker data from M.vitrata collected from cultivated cowpea (Vigna unguiculata L. …”
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In the search for low-cost year-round feeds: Pen-level growth performance of local and crossbred Ugandan pigs fed forage- or silage-based diets versus commercial diet por Carter, Natalie A., Dewey, Catherine E., Grace, Delia, Lukuyu, Ben A., Smith, Eliza, Lange, Cornelis de

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Alternative management regimes of Eucalyptus por Otuba, Moses

“…Thus, it cannot be concluded in line with other studies that eucalyptus does in general decrease biodiversity in the under growth as compared to other commonly used plantation tree species in the tropics and subtropics. Policies in Kenya prohibit establishment and production of trees, in particular eucalyptus, in wetlands or nearby water bodies, levy land tax promote co-generation of energy and give a special consideration to indigenous trees. …”
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Biomass production and psyllid resistance of Leucaena species grown as hedgerows on an upland Alfisol at Debre Zeit in the Ethiopian highlands por Berhe, Kahsay, Tothill, J.C., Hanson, Jean

“…The genus Leucaena is one of the most important sources of multipurpose trees and shrubs for use in farming systems in the African tropics and subtropics. In previous studies, Kashsay and Tothill (1995) identified the superior performance of Leucaena pallida and L. diversifolia as highly productive sources of protein-rich fodder for use in the typical crop-livestock small-holder farms of the highland tropics of Ethiopia. …”
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