Resultados de búsqueda - "triploid"

Maximum-likelihood method identifies meiotic restitution mechanism from heterozygosity transmission of centromeric loci: application in citrus por Cuenca, José, Aleza, Pablo, Juárez, José, García-Lor, Andrés, Froelicher, Yann, Navarro, Luis, Ollitrault, Patrick

“…This new method was used to identify the meiotic restitution mechanism in nineteen mandarin genotypes used as female parents in triploid citrus breeding. SDR was identified for 85.3% of 543 triploid hybrids and FDR for 0.6%. …”
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Evaluation of Mchare and Matooke Bananas for Resistance to Fusarium oxysporum f. sp. cubense Race 1 por Ndayihanzamaso, P., Mostert, D., Matthews, M.C., Mahuku, George S., Jomanga, K., Mpanda, H.J., Mduma, H., Brown, A., Uwimana, Brigitte, Swennen, Rony L., Tumuhimbise, Robooni, Viljoen, Altus

“…Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense (Foc) race 1, is a major disease of bananas in East Africa. Triploid East African Highland (Matooke) bananas are resistant to Foc race 1, but the response of diploid (Mchare and Muraru) bananas to the fungus is largely unknown. …”
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Development and performance of balck sigatoka-resistant tetraploid hybrids of plantain (Musa spp., AAB group) por Vuylsteke, D.R., Swennen, R.L., Ortiz, R.

“…Conversely, the 4x progeny of plantain readily expressed black sigatoka resistance when crossed with ‘Calcutta 4’. Progenies of the triploid plantain cvs. ‘Obino l'Ewai’ and ‘Bobby Tannap’ differed in their black sigatoka breeding values, the former producing larger numbers of promising hybrids. …”
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The banana (Musa acuminata) genome and the evolution of monocotyledonous plants por D’Hont, Angélique, Denoeud, F., Aury, J.M., Baurens, F.C., Guignon, Valentin, Dita, M., Roux, N.

“…It involved hybridizations between diverse species and subspecies, fostered by human migrations2, and selection of diploid and triploid seedless, parthenocarpic hybrids thereafter widely dispersed by vegetative propagation. …”
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Musa genetics por Ortíz, R.

“…The triploid nature of plantain and its pattern of inheritance should have represented a challenge and an incentive for geneticists. …”
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Traits that define yield and genetic gain in east African highland banana breeding por Batte, M., Swennen, Rony L., Uwimana, Brigitte, Akech, V., Brown, A., Geleta, M., Ortíz, R .

“…Significant increases of bunch weight and yield potential were noted from the landrace triploid germplasm, their derived primary tetraploid hybrids and secondary triploid bred-germplasm. …”
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Rare instances of haploid inducer DNA in potato dihaploids and ploidy-dependent genome instability por Amundson, K.R., Ordoñez, B., Santayana, M., Ng'ang'a, M.L., Henry, I.M., Bonierbale, Merideth W., Khan, A., Tan, E.H., Comai, L.

“…Chromosomal breaks commonly affected the paternal genome in the dihaploid and tetraploid progeny, but not in the triploid progeny, correlating instability to sperm ploidy and to haploid induction. …”
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Seasonal variation of apparent male fertility and 2n pollen production in plantain and banana por Ortíz, R., Ulburghs, F., Okoro, J.

“…AAA genomic group) depend on identifying triploid, female-fertile clones and crossing them with male-fertile, diploid wild or cultivated accessions. …”
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Comparison of PCRbased molecular marker analyses of Musa breeding populations por Crouch, J.H., Crouch, H.K., Constandt, H., Gysel, A. van, Breyne, P., Montagu, M. van, Jarret, Robert L., Ortíz, R.

“…AFLP analysis of a full-sib tetraploid hybrid population confirmed previous reports based on VNTR analysis, of a high frequency of recombination during 2n (3x) gamete formation by a triploid plantain landrace. In addition, both VNTR and RAPD analyses of a full-sib triploid hybrid population suggested a high frequency of homoeologous recombination during n (2x) gamete formation by tetraploid hybrids. …”
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Molecular and cytogenetic study of east African highland banana por Nemecková, A., Christelová, P., Cížková, J., Nyine, M., Houwe, Ines van den, Svacina, R., Uwimana, Brigitte, Swennen, Rony L., Doležel, Jaroslav, Hribova, E.

“…A total of 38 triploid EAHB accessions available in the Musa germplasm collection (International Transit Centre, Leuven, Belgium) were characterized. …”
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Applications of biotechnology to citrus improvement in Spain por Navarro, Luis, Olivares-Fuster, Oscar, Juárez, José, Aleza, Pablo, Pina, José A., Ballester-Olmos, José F., Cervera, Magdalena, Fagoaga, Carmen, Durán-Vila, Núria, Pena, Leandro

“…It is used in large programs to recover triploid seedless hybrid varieties from aborted seeds from 2n x 4n and 2n x 2n crosses; c) Protoplast fusion. …”
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Embryogenic response from anther culture of cultivars of loquat (Eriobotrya japonica (Thunb.) Lindl.) from different origins por Blasco, Manuel, Badenes, María L., Naval, María M.

“…Flow cytometry and chromosome counts revealed that the plantlet was triploid. The single triploid plant obtained was unexpected and its origin is obscure. …”
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A rare case of a natural contact zone in Morocco between an autopolyploid and an allopolyploid of Centaurea aspera with sterile tetraploid hybrids por Garmendia, A., Ferriol, M., Juárez, José, Zajac, A., Kaluzny, K., Merle, H.

“…In Spain, hybrids were triploid (from reduced gametes A and gamete AB), highly sterile and exerted a ‘triploid block’. …”
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Male and female inheritance patterns in tetraploid ‘Moncada’ mandarin por Garavello, Miguel Fernando, Cuenca, José, Garcia-Lor, Andrés, Ortega, Neus, Navarro, Luis, Ollitrault, Patrick, Aleza, Pablo

“…Triploid-breeding programs in citrus are key tool to develop seedless cultivars. …”
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Analytical breeding por Ortíz, R.

“…Triploid Musa hybrids may also occur due to USP among 2x, i.e., one 2x producing 2n gametes. …”
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Musa germplasm A and B genomic composition differentially affects their susceptibility to banana bunchy top virus and its aphid vector, Pentalonia nigronervosa por Ngatat, S., Hanna, R., Lienou, J., Ghogomu, R., Nguidang, S.P.K., Enoh, A.C., Ndemba, B., Korie, S., Fotso Kuate, A., Nanga, S.N., Fiaboe, K., Kumar, P. Lava

“…In the field, the highest apterous aphid density per plant (29.2 ± 6.7) occurred on the AAB triploid Batard and the lowest (0.4 ± 0.2) on the AA diploid Pisang Tongat. …”
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Interspecific introgression patterns reveal the origins of worldwide cultivated bananas in New Guinea por Martin, Guillaume, Cottin, Aurélien, Baurens, Franc-Christophe, Labadie, Karine, Hervouet, Catherine, Salmon, Frédéric, Paulo-de-la-Reberdiere, Nilda, van den Houwe, Ines, Sardos, Julie, Aury, Jean-Marc, D’Hont, Angélique, Yahiaoui, Nabila

“…Informative alleles for each of these genetic pools were pinpointed and used to obtain genome ancestry mosaics of accessions. Diploid and triploid cultivars had genome mosaics involving three up to possibly seven contributors. …”
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Pilot study to screen alleles under selection related to drought tolerance in banana por Breton, Catherine, Cenci, Alberto, Roux, Nicolas, Rouard, Mathieu, Carpentier, Sebastien

“…The present pilot study describes the methodology to analyse and select Single Nucleotide Polymorphism (SNP) alleles in two conditions (drought stressed and control) on triploid Musa acuminata AAA, ABB and AAB genotypes. …”
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Next generation sequencing based genotyping, cytometry and phenotyping for understanding diversity and evolution of guinea yams por Girma, G., Hyma, K.E., Asiedu, Robert, Mitchell, S.E., Gedil, Melaku A, Spillane, Charles

“…Using flow cytometry a single ploidy level was inferred across D. cayenensis (3x, N = 21), D. praehensilis (2x, N = 7), and D. mangenotiana (3x, N = 5) accessions, whereas both diploid and triploid (or aneuploid) accessions were present in D. rotundata (N = 11 and N = 32, respectively). …”
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Postharvest Behavior of New Mandarin Cultivars Obtained in the IVIA por Sdiri, Sawsen, Navarro, Pilar, Cuenca, José, Pardo, José, Salvador, Alejandra

“…A triploid breeding program has been carried out in Plant Protection and Biotechnology Center at the Instituto Valenciano de Investigaciones Agrarias (IVIA) based on sexual hybridization, embryo rescue and ploidy analysis by flow cytometry in order to obtain new mandarin cultivars with late harvest. 'Safor' and 'Garbi' mandarins are new triploid hybrids recently released characterized by their high quality and seedless fruits. …”
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