Resultados de búsqueda - ZENIT~

Identification of okra (Abelmoschus spp.) accessions resistant to aphid (Aphis gossypii Glover) in Cameroon por Abang, A.F., Srinivasan, R., Kekeunou, S., Hanna, R., Chagomoka, Takemore, Chang, J.C., Bilong-Bilong, C.F.

“…The nucleotidesequences of all the populations showed 100 % similarity and the phylogenetic analysisconfirmed the genetic similarity of A. gossypii in Taiwan and Cameroon. …”
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Engineering nematode resistant plantains for sub-Saharan Africa por Tripathi, L., Tripathi, J.N., Roderick, H., Atkinson, H.J.

“…The efficacy of the genes against nematode resistance has been proven in glasshouse trials which will be further tested in confined field trial. Genetically modified plantain with resistance to all nematodes would be a substantial breakthrough in Musa pest management for Africa and elsewhere.…”
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Nutrition challenges ahead por Chen, J., Fewtrell, M., Kennedy, G., Naska, A., Riediger, K., Roos, N., Sanders, T., Tuohy, K.M., Valtuena-Martinez, S.

“…Individuals, however, are unique regarding their genetic background, gut microbiota and health status. …”
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Genotype x environment interactions for East African orange-fleshed sweetpotato clones evaluated across varying ecogeographic conditions in Uganda por Tumwegamire, Silver, Rubaihayo, P.R., Grüneberg, W.J., LaBonte, D.R., Mwanga, Robert O.M., Kapinga, R.

“…Medium to high positive correlations among mineral traits favor parallel selection, and it merits further study to efficiently improve the mineral trait complex by an index. …”
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Development of reference transcriptomes for the major field insect pests of cowpea: a toolbox for insect pest management approaches in West Africa por Agunbiade, T.A., Sun, W., Coates, B.S., Djouaka, R.F., Tamo, Manuele, Ba, Malick N., Binso-Dabire, L., Baoua, I., Olds, B.P., Pittendrigh, Barry Robert

“…Furthermore, 742, 97, 607 and 180 single nucleotide polymorphisms (SNPs) were respectively predicted among A. curvipes, A. craccivora, C. tomentosicollis and M.sjostedti transcripts, and will likely be valuable tools for future molecular genetic marker development. These results demonstrate that Roche 454-based transcriptome sequencing could be useful for the development of genomic resources for cowpea pest insects in West Africa.…”
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Evaluating consistency of resistance reactions of openpollinated maize cultivars to Striga hermonthica (Del.) Benth under artificial infestation por Menkir, A., Franco, J., Adepoju, A., Bossey, B.

“…The presence of large genetic variation among parasite populations contributes to significant genotype × environment interaction, complicating assessment of resistance reactions of genotypes in field trails. …”
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Optimizing community-based breeding for indigenous goat breeds in Ethiopia por Woldu, T.

“…The study indicated that extent of utilizing tangible and intangible benefits of goats varied among production systems and these differences should be given adequate attention in designing genetic improvement programs.…”
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Breeding objectives and breeding strategies for small ruminants in the tropics. por Kosgey, I.S.

“…However, 'interactive cycling screening' schemes would be more practical under village settings as the farmers are actively involved in genetic improvement, and minimal recording is required in the commercial flocks. …”
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Intensive cereal-legume–livestock systems in West African dry Savannas. por Kamara, A.Y., Ajeigbe, Hakeem A., Omoigui, L.O., Chikoye, David

“…Proper integration of these practices will diversify smallholder income and increase food security. Integrated genetic and natural resource management provides the keys improved eco-efficiency. …”
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Release of orange-fleshed sweetpotato (Ipomoea batatas [l.] Lam.) cultivars in Mozambique through an accelerated breeding scheme por Andrade, M.I., Ricardo, J., Naico, A., Alvaro, A., Makunde, G.S., Low, Jan W., Ortíz, J., Grüneberg, W.J.

“…The proposed ABS seems to be an attractive scheme for genetic enhancement of sweetpotato.…”
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Strategic assessment of banana research priorities por Pemsl, Diemuth E., Staver, Charles

“…Based on availability of time and resources, the following six banana research options were included in the quantitative assessment: 1) recovery of production affected by banana bunchy top virus BBTV); 2) integrated management of banana Xanthomonas wilt (BXW) and other bacterial diseases: develop improved cultural practices & low-cost diagnostic kits; 3) integrated management of banana Xanthomonas wilt (BXW) and other bacterial diseases: resistant genetically modified (GM) East African Highland banana (EAHB) varieties; 4) sustainable intensification of banana-based cropping systems; 5) breeding EAHB varieties resistant to nematodes, weevils, and black leaf streak; 6) breeding plantain varieties resistant to black leaf streak, nematodes, weevils, and with improved quality traits.…”
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Development of genomic tools for verification of hybrids and selfed progenies in cassava (Manihot esculenta) por Otti, G., Fakoya, A., Andrew, I., Gedil, Melaku A

“…This study attempts to identify molecular marker tools suitable for verifying the genetic purity of putative progenies of populations of cassava. …”
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Impaired expressions of the beta and delta isoforms of vacuolar processing enzymes compromise the basal defenses of Arabidopsis thaliana against the phloem-feeding insect Myzus per... por Alpuerto, J.B., Mukherjee, A., Kitazumi, A., Alyokhin, A., Koeyer, D. de, Reyes, B.G. de los

“…Inspired by an observation that βVPE and δVPE represent the most highly upregulated transcripts in leaves of Solanum bulbocastanum and its backcross progenies that were highly resistant to the phloem-feeding green peach aphids (Myzus persicae), we used a reverse genetic approach in Arabidopsis to investigate whether T-DNA insertion mutants for specific βVPE and δVPE loci would exhibit compromised defenses at the whole-plant, physiological, and molecular levels. …”
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Variation in physicochemical properties of seed of selected improved varieties of cowpea as it relates to industrial utilization of the crop por Ajeigbe, Hakeem A., Ihedioha, D., Chikoye, David

“…The physicochemical properties evaluated generally had high broad sense heritability (56 - 99%). Cowpea varieties (IT97K-1101-5 and IT89KD-288) with high protein content could be selected for formulating infant feeds, varieties with lower carbohydrate, low fat and high crude fibre (IT90K-277-2) would be desirable in making meals for diabetic patients.…”
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Ancient diversity and geographical sub-structuring in African buffalo Theileria parva populations revealed through metagenetic analysis of antigen-encoding loci por Hemmink, Johanneke D., Sitt, Tatjana, Pelle, Roger, Klerk-Lorist, L.M. de, Shiels, B., Toye, Philip G., Morrison, W.I., Weir, W.

“…Fourth, although compelling evidence for population differentiation between the Kenyan and South African T. parva parasites was identified, analysis of molecular variance for each gene revealed that the majority of the underlying nucleotide sequence polymorphism was common to both areas, indicating that much of this aspect of genetic variation in the parasite population arose prior to geographic separation.…”
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Yield components of triploid and tetraploid Musa genotypes in Nigeria por Baiyeri, K., Mbah, B., Tenkouano, A.

“…Determination of the genetic relationships between processing traits and farm gate traits could allow Musa breeders to construct selection indices that would facilitate multiple trait selection and enhance breeding efficiency, with respect to cultivar stability and adaptation across environments.…”
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Pollination success in some white yam genotypes under polycross and nested mating designs por Norman, P.E., Asfaw, A., Tongoona, P.B., Danquah, A.O., Danquah, E.Y., Koeyer, D. de, Asiedu, Robert

“…Sexual reproduction involving a transfer of pollen from male to female genotype reproductive organ is a key step to generate variability in yam improvement. The efficacy of genetic improvement therefore depends on degree of pollination success resulting in fruit set and producing viable botanical seeds. …”
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Identification of common bean genotypes with dual leaf and pod resistance to common bacterial blight disease in Uganda por Alladassi, Boris M.E., Nkalubo, Stanley T., Mukankusi, Clare Mugisha, Kayaga, H.N., Gibson, P., Edema, Richard, Urrea, Carlos A., Kelly, James D., Rubaihayo, P.R.

“…Results indicated significant differences (P<0.001) in genotypic reactions against the CBB disease, with a range of disease scores of 2.2 - 7.8 on leaves and 2.6 - 7.1 on pods (1-9 CIAT disease scale), suggesting high genetic variability among the tested germplasm. Relatively low correlation (r = 0.39) was observed between leaf and pod reactions, suggesting differential expression of CBB resistance in these two plant organs. …”
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Assessing host range, symbiotic effectiveness, and photosynthetic rates induced by native soybean rhizobia isolated from Mozambican and south African soils por Gyogluu, C., Mohammed, M., Jaiswal, S.K., Boahen, S., Dakora, F.D.

“…Molecular analysis based on enterobacterial repetitive intergenic consensus (ERIC)-PCR revealed high genetic diversity among the test isolates. The results further showed that isolate TUTLBC2B failed to elicit nodulation in all test plants, just as TUTNSN2A and TUTDAIAP3B were also unable to nodulate cowpea, Kersting’s bean and Bambara groundnut. …”
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The complex distribution of plantain cultivars (Musa sp., AAB subgroup) in the Bas-Uele province of the Democratic Republic of Congo por Losimba, J.K., Giria, J.A., Djailo, B.D., Karamura, D., Blomme, Guy, Swennen, Rony L., Langhe, E. de

“…This is useful for the genetic improvement of plantain cultivars, which most probably will have to rely for a great deal on the unraveling and management of epigenetic mechanisms.…”
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