Resultados de búsqueda - "triploid"

Morphological, SSR and ploidy analysis of water yam (Dioscorea alata L.) accessions for utilization of aerial tubers as planting materials por Tessema, G., Gedil, Melaku A, Spillane, Charles

“…The MCA analysis revealed three main groups consisting of; Group 1) all non aerial tuber producing accessions (n = 15), hastate leaf shape, less or no anthocyanin pigmentation and diploid (2n = 2x = 40), Group 2) group with some aerial tuber producing accessions, different extent of anthocyanin pigmentation, sagittate leaf shape, mainly diploid (n = 44) and three triploid (2n = 3x = 60) and 3) a group where all individuals bear aerial tuber, cordate leaf shape, intermediate anthocyanin pigmentation and majority (n = 74) tetraploid (2n = 4x = 80) and three triploid individuals. …”
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Workshop on New Mandarin Varieties por Aleza, Pablo

“…Very active programs to produce new mandarin varieties are being carried out in several countries using different approaches and technologies (diploid and triploid breeding, irradiation, somatic hybridization, genetic transformation, etc.). …”
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Genetic mapping of centromeres in the nine Citrus clementina chromosomes using half-tetrad analysis and recombination patterns in unreduced and haploid gametes por Aleza, Pablo, Cuenca, José, Hernandez, M., Juárez, José, Navarro, Luis, Ollitrault, Patrick

“…Results: Triploid progenies were derived from unreduced megagametophytes produced by second-division restitution. …”
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Preliminary evaluation of secondary Musa polyploids at IITA breeding station por Ortíz, R., Vuylsteke, D.R.

“…Comparisons between secondary tetraploids and secondary triploids showed that the secondary tetraploids generally had lower yields than secondary triploids. …”
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Ploidy determination in Musa germplasm using pollen and chloroplast characteristics por Tenkouano, A., Crouch, J.H., Crouch, H.K., Vuylsteke, D.R.

“…While pollen count and stainability effectively separated triploid accessions from diploids or tetraploids, they did not discriminate between diploids and tetraploids. …”
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Effect of paleopolyploidy and allopolyploidy on gene expression in banana por Cenci, A., Hueber, Y., Zorrilla-Fontanesi, Yasmín, Wesemael, Jelle van, Kissel, E., Gislard, M., Sardos, J., Swennen, Rony L., Roux, N., Carpentier, Sebastien C., Rouard, M.

“…Using transcriptomic data, we investigated the impact of the genome structure on gene expression patterns in roots of 12 different triploid genotypes covering AAA, AAB and ABB subgenome constitutions.…”
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Analysis of Bgenome derived simple sequence repeat (SSR) markers in Musa spp. por Oriero, C.E., Odunola, O.A., Lokko, Y., Ingelbrecht, I.L.

“…The hierarchical cluster analysis showed clusters of diploid cultivars separate from triploid ones (with the exception of TMB149 (BB) and TMB131 (AB)). …”
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Occurence and inheritance of 2n pollen in Musa por Ortíz, R.

“…The presence of 2 n pollen in diploid species suggests that unilateral sexual polyploidization (2 n×n ) could have been involved in the origin of triploid Musa species. Segregation data suggests that at least one dominant gene controls 2 n pollen production in Musa . …”
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Yield stability of East African Highland cooking banana ‘Matooke’ hybrids por Madalla, Noel A., Swennen, Rony L., Brown, Allan, Massawe, Cornel, Mpoki, Shimwela, Mbongo, Daud Batson, Kindimba, Grace, Kubiriba, Jerome, Tumuhimbise, Robooni, Okurut, Asher Wilson, Carpentier, Sebastien C., Bergh, Inge van den, Crichton, Rhiannon, Machida, Lewis, Weltzien, Eva, Ortíz, Rodomiro

“…Twenty-four primary and secondary triploid hybrids [NARITA (N)] derived from ‘Matooke’ bananas, six triploid local ‘Matooke’ cultivars, and one exotic cultivar were evaluated for their yield, adaptability, and stability across the East African region at three highland sites in Uganda’s western and central regions, as well as at three sites in Tanzania’s northeastern and southern highlands regions, from 2016–19. …”
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Pollen Development and Viability in Diploid and Doubled Diploid Citrus Species por Lora, Jorge, García-Lor, Andrés, Aleza, Pablo

“…Seedlessness is one of the most important agronomic traits in mandarins on the fresh fruit market. Creation of triploid plants is an important breeding strategy for development of new commercial varieties of seedless citrus. …”
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Combining ability for yield and plant phenology in plantain derived populations por Tenkouano, T., Ortíz, R., Vuylsteke, D.R.

“…Such clones could be used per se or in crosses aimed at restoring the seedlessness character in the progeny due to female sterility in a triploid background.…”
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Bananas and Plantains (Musa spp.) por Brown, A., Tumuhimbise, Robooni, Amah, D., Uwimana, Brigitte, Nyine, M., Mduma, H., Talengera, D., Karamura, D., Kuriba, J., Swennen, Rony L.

“…Bananas face considerable pressure from multiple biotic and abiotic stresses, but its genetic improvement is impeded by constraints on seed set due to multiple physiological and reproductive issues. The triploid nature of almost all commercially important bananas requires a complicated breeding scheme involving cross hybridization across ploidy levels and results in poor seed set that reduces the probability of obtaining favorable recombination. …”
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Segregation for persistent neutral (Hermaphrodite) flowers and male bracts in plantain-banana hybrids por Ortíz, R.

“…The genetic system proposed for somaclonal variation and evolution in triploid bananas is described.…”
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Evidence on the nature and origins of endosperm dosage requirements in Solanum and other angiosperm genera por Ehlenfeldt, M.K., Ortíz, R.

“…The failure to produce triploids, or “triploid block” in 4x×2x crosses served as the impetus for numerous studies of embryo and endosperm to attempt to explain cross failure. …”
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Regeneration and transient gene expression of African Musa species with diverse genomic constitution and ploidy levels por Tripathi, L., Tripathi, J.N., Hughes, J.A., Keese, P., Oso, R.T.

“…The selected species represented major groups of Musa including fertile diploid bananas (AA and BB genomes) , the sterile triploid plantain (AAB) , Cavendish bananas (AM), and tetraploid hybrids (AAAA and AAAB). …”
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Estimation of the nuclear DNA content in some representative of genus Dioscorea por Obidiegwu, J.E., Rodríguez, E., Ene-Obong, E.E., Loureiro, J., Muoneke, C.O., Santos, C., Kolesnikova-Allen, M., Asiedu, Robert

“…Observed ploidy levels are diploid (2x), triploid (3x), tetraploid (4x), hexaploid (6x) and octoploid (8x). …”
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Integrating morphological and molecular taxonomy in Musa: the African plantains (Musa spp. AAB group) por Langhe, E. de, Pillay, M., Tenkouano, A., Swennen, Rony L.

“…AAB) are regarded as the most diverse subgroup of the triploid bananas. Initially they were classified on the basis of morphological characters. …”
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AMMI and stability analyses of bunch mass in multilocational testing of Musa germplasm in sub-Saharan Africa por Ortíz, R.

“…Fourteen polyploid clones (10 tetraploid hybrids and 4 triploid cultivars) were evaluated in a broad range of environments in sub-Saharan Africa to determine the value of stability and AMMI analyses in Musa trials. …”
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Establishing the genome of Sukali ndizi por Pillay, M., Hartman, J., Dimkpa, C.O., Makumbi, Dan

“…Most cultivated bananas are triploids with 2n = 3x = 33 chromosomes. They vary in genome composition with the most common types being AAA (dessert), AAB (plantain) and ABB (cooking banana). …”
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The pangenome of banana highlights differences between genera and genomes por Rijzaani, Habib, Bayer, Philipp E., Rouard, Mathieu, Doležel, Jaroslav, Batley, Jacqueline, Edwards, David

“…The most commonly exported banana cultivars belong to Cavendish, a subgroup of Musa triploid cultivars, which is under threat by fungal pathogens, though there are also related species M. balbisiana Colla (B genome), M. textilis Née (T genome), and M. schizocarpa N. …”
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