Resultados de búsqueda - "triploid"

Undesrtanding the Musa genome: an update por Ortíz, R.

“…It was believed that genetic studies of most cultivated Musa, a virtually sterile triploid crop, were impossible. This explains the absence, until recently, of inheritance studies in triploid plantain and banana and the lack of genetic markers. …”
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Production of tetraploid plants of non apomictic citrus genotypes por Aleza, Pablo, Juárez, José, Ollitrault, Patrick, Navarro, Luis

“…Ploidy manipulation in Citrus is a major issue of current breeding programs aiming to develop triploid seedless mandarins to address consumer demands for seedless fruits. …”
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Inheritance of pseudostem waxiness in banana and plantain (Musa spp.) por Ortíz, R., Vuylsteke, D.R., Ogburia, N.M.

“…Tetraploid, triploid, and diploid individuals were recovered from the triploid x diploid crosses, in which one of the diploids was the wild banana Calcutta 4. …”
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Development and performance of tetraploid hybrids of plantain (Musa spp., AAB group) with black sigatoka resistance por Vuylsteke, D.R., Swennen, Rony L.

“…Tetraploids produced from crosses of a plantain cultivar with the homozygous 'Calcutta 4' displayed variation in qualitative traits and growth and yield parameters, suggesting the occurrence of recombination in the triploid plantain genome during megasporogenesis, even when there is restitution of the full triploid genome.…”
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Segregation at microsatellite loci in haploid and diploid gametes of Musa por Crouch, H.K., Crouch, J.H., Jarret, Robert L., Cregan, P.B., Ortíz, R.

“…The triploid genome of plantain (Musa spp., AA group) has been considered intractable to genetic improvement because of the production of putatively homogeneous 2n (= 3.r) gametes. …”
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Effect of male bud removal on the yield of Musa genotypes in a humid forest zone of West Africa por Okoro, J., Vuylsteke, D.R., Ortíz, R.

“…To test this hypothesis, nine Musa genotypes comprising one triploid plantain landrace (Obino l'Ewai), six plantain derived tetraploid hybrids (TMPx), one tetraploid cooking banana hybrid (FHIA 3), and one triploid cooking banana cultivar (Cardaba) were evaluated. …”
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Evolution of the banana genome (Musa acuminata) is impacted by large chromosomal translocations por Martin, G., Carreel, F., Coriton, O., Hervouet, C., Cardi, C., Derouault, P., Roques, D., Salmon, F., Rouard, M., Sardos, J., Labadie, Karine, Baurens, F.C., D’Hont, Angélique

“…Most banana cultivars are triploid seedless parthenocarpic clones derived from hybridization between Musa acuminata subspecies and sometimes M. balbisiana. …”
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Fruit quality evaluation of plantains, plantain hybrids, and cooking bananas por Ferris, R.S.B., Ortíz, R., Vuylsteke, D.R.

“…Triploid plantains (Musa AAB) are among the most important horticultural crops of West Africa. …”
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Recombinations and large structural variations shape the mosaic genomes of interspecific edible bananas por Baurens, F.C., Martin, G., Hervouet, C., Salmon, F., Yohoume D., Ricci, S., Rouard, M., Habas, R., Yahiaoui, N., D’Hont, Angélique

“…Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). …”
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Multilocus half-tetrad analysis and centromere mapping in citrus: evidence of SDR mechanism for 2n megagametophyte production and partial chiasma interference in mandarin cv 'Fortu... por Cuenca, José, Froelicher, Yann, Aleza, Pablo, Juárez, José, Navarro, Luis, Ollitrault, Patrick

“…The origin of 2n gametes in citrus is still controversial, although sexual polyploidisation is widely used for triploid seedless cultivar development. In this study, we report the analysis of 2n gametes of mandarin cv 'Fortune' by genotyping 171 triploid hybrids with 35 simple sequence repeat markers. …”
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Male and female inheritance patterns in tetraploid 'Moncada' mandarin por Garavello, Miguel, Cuenca, José, García-Lor, Andrés, Ortega, Neus, Navarro, Luis, Ollitrault, Patrick, Aleza, Pablo

“…Genetic configuration of triploid populations from interploid crosses greatly depends on the chromosomic segregation mode of the tetraploid parent used. …”
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The efficiency of natural and artificial pollinators in plantain (Musa spp. AAB group) hybridisation and seed production por Ortíz, R., Crouch, J.H.

“…This may suggest that tetraploid Musa hybrids played a much more important role in the evolution of triploid Musa landraces than previously considered. …”
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Morphological variation in Musa germplasm por Ortíz, R.

“…The implications of the germplasm grouping revealed by PCA are briefly discussed in relation to the evolution of the triploid cultivars. This paper also proposes a new scientific nomenclature for the triploid Musa cultivars.…”
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Segregation of bunch orientation in plantain and banana hybrids por Ortíz, R., Vuylsteke, D.R.

“…The other plantain cultivar, 'Obino l'Ewai', which is simplex for two loci and nulliplex for the third, has a pendulous bunch due to dosage effects at the triploid level of the recessive alleles at simplex loci. …”
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Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers. por Curk, Franck, Ollitrault, Frederique, García-Lor, Andrés, Luro, Francois, Navarro, Luis, Ollitrault, Patrick

“…Key Results The lime and lemon horticultural group appears to be highly polymorphic, with diploid, triploid and tetraploid varieties, and to result from many independent reticulation events which defined the sub-groups. …”
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Comparison of DNA marker and pedigree-based methods of genetic analysis of plantain and banana (Musa spp.) clones; I: estimation of genetic relationships por Tenkouano, A., Crouch, J., Crouch, H., Vuylsteke, D.R., Ortíz, R.

“…The marker-based contribution of triploid maternal accessions to their diploid offspring was greater than expected from published models of meiosis in Musa. …”
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Utilization of molecular genetic techniques in support of plantain and banana improvement por Crouch, J.H., Ortiz, R., Crouch, H.K.

“…SSR primers have been used to distinguish diverse germplasm and full-sib hybrids in both tetraploid and triploid plantain hybrid families. Furthermore, microsatellite markers have been used to demonstrate the occurrence of recombination during the formation of 2n gametes from triploid plantain and the heterozygosity of a banana accession commonly used as a true breeding genotype in genetic studies and Musa improvement programs. …”
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Classification of African plantain landraces and banana cultivars using a phenotypic distance index of quantitative descriptors por Ortíz, R., Madsen, S., Vuylsteke, D.R.

“…This value suggested little gene flow among triploid taxonomic clusters via pollen, which explains the higher population differentiation exhibited by this vegetatively propagated crop with very low male fertility. …”
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VNTRbased diversity analysis of 2x and 4x fullsib Musa hybrids por Crouch, J., Crouch, H., Tenkouano, A., Ortíz, R.

“…The triploid plantain landrace Obino l Ewai (Musa spp., AAB genome) has been crossed with a wild diploid banana (M. acuminata subsp. burmannica var. …”
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Genetic and cropping system effects on yield and postharvest characteristics of Musa species in Southeastern Nigeria por Baiyeri, K., Tenkouano, A., Mbah, B., Mbagwu, J.

“…Tetraploid hybrids had lower pulp firmness but higher shelf-life and market potential index than the triploid genotypes. Among the triploid landraces, AAA genotypes had longer shelf-life but expressed the lowest market potential index due to their lower pulp yield and dry matter content. …”
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