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Letteratura scientifica selezionata sul tema "Tetraploid"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Tetraploid"

Jan, C. C., J. M. Chandler, and S. A. Wagner. "Induced tetraploidy and trisomic production of Helianthus annuus L." Genome 30, no. 5 (1988): 647–51. http://dx.doi.org/10.1139/g88-109.

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Seedlings of the Helianthus annuus inbred lines P21 and HA89 were treated with colchicine to study chromosome doubling. Frequency of tetraploids, meiotic chromosome pairing, pollen stainability, and fertility were examined. Five-hour colchicines treatments at 0.15%, pH 5.4, with 2% dimethyl sulfoxide resulted in tetraploid sectors on 42% of P21 and 11% of HA89 plants. Tetraploids had larger disk florets and larger pollen grains. Otherwise, tetraploid plants were morphologically similar to their diploid progenitors. Tetraploidy in P21 was not stable, with plants having 2n = 4x = 65 to 70 chromo

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Othmani, Ahmed, Amel Sellemi, Monia Jemni, Karim Kadri, Leen Leus, and Stefaan P. O. Werbrouck. "In Vitro Initiation, Regeneration, and Characterization of Plants Derived from Mature Tetraploid Floral Explants of Date Palm (Phoenix dactylifera L.)." Horticulturae 10, no. 11 (2024): 1206. http://dx.doi.org/10.3390/horticulturae10111206.

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A stable tetraploid date palm mutant with the potential for increased fruit size was recovered from a sectorial di-tetraploid chimera via the in vitro culture of flower explants. Callus was induced using 2,4-D, followed by shoot regeneration on a medium containing NAA and BAP and rooting with IBA. Regenerated plantlets, confirmed as tetraploid via flow cytometry, were acclimatized and grown for six years. The leaves of tetraploids exhibited significantly wider petiole bases, thicker rachis and spines, broader leaflets, and a more intense green leaf color compared to diploids. However, leaf len

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Weber, Gregory M., Mark A. Hostuttler, Kenneth J. Semmens, and Brian A. Beers. "Induction and viability of tetraploids in brook trout (Salvelinus fontinalis)." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 10 (2015): 1443–49. http://dx.doi.org/10.1139/cjfas-2014-0536.

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Brook trout (Salvelinus fontinalis) populations are threatened by introduction of invasive species, habitat loss, and habitat degradation in their native range and are a problem invasive species in western Unites States and Canada and in Europe. Stocking sterile triploids has been promoted as an approach to reduce negative effects of stocking of brook trout for recreational fishing on native fish populations. Crossing a tetraploid with a diploid is a method of triploid production that may help hatcheries meet demand. We induced tetraploidy in brook trout by application of 633 kg·cm−2 of hydros

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Panopoulos, Andreas, Cristina Pacios-Bras, Justin Choi, et al. "Failure of cell cleavage induces senescence in tetraploid primary cells." Molecular Biology of the Cell 25, no. 20 (2014): 3105–18. http://dx.doi.org/10.1091/mbc.e14-03-0844.

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Tetraploidy can arise from various mitotic or cleavage defects in mammalian cells, and inheritance of multiple centrosomes induces aneuploidy when tetraploid cells continue to cycle. Arrest of the tetraploid cell cycle is therefore potentially a critical cellular control. We report here that primary rat embryo fibroblasts (REF52) and human foreskin fibroblasts become senescent in tetraploid G1 after drug- or small interfering RNA (siRNA)-induced failure of cell cleavage. In contrast, T-antigen–transformed REF52 and p53+/+ HCT116 tumor cells rapidly become aneuploid by continuing to cycle after

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Bothmer, Roland von, Jan Flink, and Tomas Landström. "Meiosis in interspecific Hordeum hybrids. IV. Tetraploid (4x × 4x) hybrids." Genome 30, no. 4 (1988): 479–85. http://dx.doi.org/10.1139/g88-080.

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The meiotic pairing behaviour of 31 interspecific combinations of tetraploid Hordeum species are reported. The autoploid H. bulbosum with the II genomic constitution has no homology to the other species. The constitution of tetraploid H. murinum is not clear, but it is not homologous to other tetraploids. Hordeum marinum is a probable autoploid (XX) but with a very strong genetic regulation of pairing. The X genome is possibly found in H. secalinum and H. capense, both of which also possess the H genome in several diploids. Hordeum fuegianum, H. tetraploidum, H. jubatum, H. brachyantherum, and

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Compton, Michael E., D. J. Gray, and G. W. Elmstrom. "150 THE IDENTIFICATION OF TETRAPLOID REGENERANTS FROM COTYLEDONS OF DIPLOID WATERMELON AND THEIR USE IN BREEDING TRIPLOID HYBRIDS." HortScience 29, no. 5 (1994): 450c—450. http://dx.doi.org/10.21273/hortsci.29.5.450c.

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Tetraploid individuals were identified among plants regenerated from cotyledons of diploid watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] cultured in vitro. Tetraploid and diploid plants were distinguished by counting the number of chloroplast per guard cell pair. The mean number of chloroplasts was 19 and 11 for tetraploid and diploid plants, respectively. Self-fertile tetraploids were obtained from the diploid cultivars Mickylee, Jubilee II and Royal Sweet. `Dixielee' and `Minilee' tetraploids failed to set fruit. Progeny obtained from self-fertile tetraploids were crossed with

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SMITH, K. F., R. J. SIMPSON, R. A. CULVENOR, M. O. HUMPHREYS, M. P. PRUD'HOMME, and R. N. ORAM. "The effects of ploidy and a phenotype conferring a high water-soluble carbohydrate concentration on carbohydrate accumulation, nutritive value and morphology of perennial ryegrass (Lolium perenne L.)." Journal of Agricultural Science 136, no. 1 (2001): 65–74. http://dx.doi.org/10.1017/s0021859600008480.

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Tetraploidy or the use of diploid genotypes with genes conferring high water-soluble carbohydrate concentrations are two mechanisms to increase the nutritive value of perennial ryegrass. This experiment compared the morphology, nutritive value and diurnal variation in water-soluble carbohydrate (WSC) concentrations of 56-day-old plants from six perennial ryegrass cultivars grown under controlled environment conditions. Three of these cultivars were diploid (Melle, Aurora and Cariad) and three were tetraploids (Meltra, Prospero and AberOnyx) which had been derived from the respective diploid cu

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Hassan, Jahidul, Ikuo Miyajima, Yukio Ozaki, Yuki Mizunoe, Kaori Sakai, and Wasimullah Zaland. "Tetraploid Induction by Colchicine Treatment and Crossing with a Diploid Reveals Less-Seeded Fruit Production in Pointed Gourd (Trichosanthes dioica Roxb.)." Plants 9, no. 3 (2020): 370. http://dx.doi.org/10.3390/plants9030370.

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Pointed gourd (Trichosanthes dioica Roxb.) (2n = 2x = 22) is a dioecious cucurbit vegetable and green fruit that is edible after cooking. Consumers prefer to consume seedless or less-seeded fruit because seeds are unpalatable due to their hard coats. Therefore, the cross compatibility between the diploid and induced tetraploid will be helpful for seedless or less-seeded fruit production. Thus, the present study was conducted using mature seeds that were immersed in 0.05%, 0.1%, and 0.5% colchicine for 24, 48, and 72 h to induce tetraploids. These tetraploids were used as parents (male or femal

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Mahony, MJ, SC Donnellan, and JD Roberts. "An Electrophoretic Investigation of Relationships of Diploid and Tetraploid Species of Australian Desert Frogs Neobatrachus (Anura: Myobatrachidae)." Australian Journal of Zoology 44, no. 6 (1996): 639. http://dx.doi.org/10.1071/zo9960639.

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Allozyme electrophoresis of 27 loci was used to characterise genetic variation among 29 populations of six diploid species of the myobatrachid frog genus Neobatrachus. All six species are well differentiated genetically with the percentage of fixed differences between species ranging from 11 to 59%. The genetic data are in agreement with the currently accepted species boundaries. The four tetraploid species were examined for 25 of the 27 loci assayed in the diploid species. In contrast to the diploid species, the tetraploid species shared electromorphs with each other at all the loci examined.

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de Sousa, Joana Teixeira, Standish K. Allen, Brittany M. Wolfe, and Jessica Moss Small. "Mitotic instability in triploid and tetraploid one-year-old eastern oyster, Crassostrea virginica, assessed by cytogenetic and flow cytometry techniques." Genome 61, no. 2 (2018): 79–89. http://dx.doi.org/10.1139/gen-2017-0173.

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For commercial oyster aquaculture, triploidy has significant advantages. To produce triploids, the principal technology uses diploid × tetraploid crosses. The development of tetraploid brood stock for this purpose has been successful, but as more is understood about tetraploids, it seems clear that chromosome instability is a principal feature in oysters. This paper is a continuation of work to investigate chromosome instability in polyploid Crassostrea virginica. We established families between tetraploids—apparently stable (non-mosaic) and unstable (mosaic)—and normal reference diploids, cre

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Più fonti

Tesi sul tema "Tetraploid"

Crockford, Andrew. "Deciphering tetraploid tolerance." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1475158/.

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Chromosomal instability and aneuploidy are common features of human malignancies, which fuel genetic heterogeneity and can lead to inaccurate diagnosis and treatment failure. Tetraploidy has been shown as an intermediate of aneuploidy and, thus, understanding the molecular mechanisms governing tetraploid tolerance is of great importance. A frequent tolerance mechanism observed in experimental systems and human tumours is loss of TP53, highlighting its central role in the tetraploidy checkpoint. However, despite this association, more than half of genome-doubled tumours are TP53 wild-type. The

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Muramoto, H. "Tetraploid Caducous Bract Cotton." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/203924.

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Tavakkol, Afshari Reza. "Variation in seed dormancy of tetraploid wheat." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ37916.pdf.

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Kuffer, Christian. "Proliferation and arrest of human tetraploid cells." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-182558.

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Durch Fehler entstandene tetraploide Zellen sind chromosomal instabil und können zu Zelltransformation führen. Die Beweise verdichten sich, dass die Propagation von tetraploiden Säugetierzellen durch einen p53-vermittelten Arrest eingeschränkt wird; jedoch ist weiterhin unklar, was die Ursache dieses p53-vermittelten Arrests ist. Um die Ursache des p53-vermittelten Arrests zu identifizieren, wurden individuelle Zellen mittels zeitraffender Mikroskopie in Echtzeit verfolgt. Neu entstandene tetraploide Zellen können einen Zellzyklus vollenden, aber die Mehrzahl der Zellen starb oder verharrte i

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Khan, Javed Ahmad. "Salinity effects on 4D recombinant tetraploid wheat genotypes." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321525.

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Diffoot, Nanette. "Corydoras aeneus: a diploid-tetraploid fish species complex." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101468.

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Corydoras aeneus is an armoured catfish found in the upper amazon regions of South America. It is a member of the family Callichthyidae. Studies done with this species of fish showed that C. aeneus is a tetraploid with a chromosome number of 132 (Scheel et al. , 1972). Dunham et al. (1980) reported 120 chromosomes. The C. aeneus used in this study were bought from direct importers. We had four samples of fishes supposedly coming from Brazil (Belem), Guyana, Peru and Trinidad. During our initial studies in an attempt to karyotype aeneus we came across individuals with a highly reduced chromosom

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Morgan, Christopher Henry. "Coordination of meiotic recombination in diploid and tetraploid arabidopsis." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/7092/.

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Homologous recombination is an integral part of meiosis and is essential for generating crossovers that ensure balanced segregation of homologous chromosomes and establish genetic variation within offspring. It is therefore exceedingly important that meiotic cells employ stringent control mechanisms to safeguard crossover formation. Work in yeast has indicated that the meiotic axis, a proteinaceous structure that tethers meiotic chromosomes into looped arrays, plays a crucial role in many aspects of homologous recombination, from double strand break formation to crossover interference. It has

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Schuck, Susan M., and Steven P. McLaughlin. "Flowering Phenology and Outcrossing in Tetraploid Grindelia camporum Green." University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/609102.

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Several reproductive processes of tetraploid Grindelia camporum were investigated. This plant is a potential resin crop for the southwestern United States. Field observations of 100 flower heads from unopened buds through 100% achene dispersal were made. It was found that individual flower heads are available for pollination for approximately 5 days but all disc florets are open for only 1 day. On average, achenes mature in 22 days and are dispersed 53 days after flowering. Fourteen-hundred hand-pollinations were also made on plants from 6 wild populations of G. camporum grown in a greenhouse

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Stone, Harriet. "Evolution and conservation of tetraploid Euphrasia L. in Britain." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7740.

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In the UK, nearly half of the plants short listed for high conservation priority in the UK Biodiversity Action Plan are found in taxonomically complex groups. It is thought that a shift from species- to process-based conservation strategies, aimed at conserving the processes that generate diversity as opposed to simply the end product of these dynamic interactions, may benefit these groups. One group for which this strategy has been proposed is tetraploid Euphrasia. The underlying taxonomic complexity in this group is hypothesised to arise via breeding systems, hybridisation and local ecotypic

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Acuna, Carlos A. "Bahiagrass germplasm reproductive characterization and breeding at the tetraploid level." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014399.

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Più fonti

Libri sul tema "Tetraploid"

Bauernfeind, Marion. Zur Entwicklungsfähigkeit tetraploider Zellen in diploid/tetraploid-Chimären der Maus. Hartung-Gorre, 1989.

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Canada. Dept. of Fisheries and Oceans. Biological Sciences Branch. A bibliography of tetraploidy in fish (1964-1991). Dept. of Fisheries and Oceans, 1992.

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Kosina, Romuald. Tetraploids of the genus Triticum in the light of caryopsis structure. Wydawnictwo Uniwersytetu Wrocławskiego, 1995.

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KHATEFOV, E. B., V. I. KHOREVA, B. R. SHOMAKHOV, et al. REDIPLOID MAIZE LINES: (RESYNTHESIZED FROM A TETRAPLOID POPULATION FOR BREEDING HYBRID MAIZE). N.I. Vavilov All-Russian Institute of Plant Genetic Resources, 2021. http://dx.doi.org/10.30901/978-5-907145-75-7.

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The catalogue was compiled based on the results of studying the breeding value of 200 accessions of rediploid lines isolated from tetraploid maize populations with a description of 37 morphological traits, which have economic and breeding importance. The catalogue is addressed to geneticists, breeders and agronomists to be used as a starting material for breeding hybrid forage and food maize in the Russian Federation.

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Adiwilaga, Kartika Dorothea. Introgression of tetraploid Mexican wild species germplasm into cultivated potato gene pool. 1989.

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DeNoma, Jeanine Streeter. The feasibility of using diploid by tetraploid crosses to obtain triploid hops (Humulus lupulus L.). 1994.

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Romano, Patrick Robert. Restriction endonuclease mapping of rRNA genes and the origin of the tetraploid tree frog Hyla versicolor. 1985.

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Liao, Shaoyi Alexander. Restriction mapping and molecular cloning of ribosomal RNA genes from the diploid/tetraploid frog species pair Hyla chrysoscelis/Hyla versicolor. 1988.

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Sobek, Renate. Untersuchungen zur Genomorganisation der tetraploiden Beta patellaris MOQ. und ihrer Stellung innerhalb der Sektion Procumbentes der Gattung Beta. 1997.

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Melzheimer, Volker, and Elvira Hörandl. Die Ranunculaceae der Flora von Zentraleuropa: Ranunculus sect. Auricomus. Universitätsbibliothek Johann Christian Senckenberg, 2022. http://dx.doi.org/10.21248/gups.68734.

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Ranunculus sect. Auricomus umfasst außer den heimischen Vertretern der R. auricomus-Gruppe und R. pygmaeus eine Reihe weiterer, temperat bis arktisch verbreiteter Arten in Nordamerika und in den Zentralasiatischen Gebirgen. R. sect. Auricomus ist daher nicht mit der/dem vorwiegend apomiktischen R. auricomus-Gruppe / -Komplex (R. auricomus agg.) gleichzusetzen, sondern hat einen größeren taxonomischen Umfang. Die Ranunculus auricomus-Gruppe umfasst im Gebiet der Flora von Zentraleuropa zwei der insgesamt fünf sexuellen Arten des Komplexes sowie eine Reihe von apomiktischen, hybridogenen Taxa. D

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Capitoli di libri sul tema "Tetraploid"

Taylor, N. L., and K. H. Quesenberry. "Tetraploid Red Clover." In Red Clover Science. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-015-8692-4_13.

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Gertsenstein, Marina. "Tetraploid Complementation Assay." In Springer Protocols Handbooks. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-662-45763-4_16.

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Akinroluyo, O., G. Statkevičiūtė, and V. Kemešytė. "Tetraploid Induction in Lolium multiflorum." In Breeding Grasses and Protein Crops in the Era of Genomics. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89578-9_13.

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Joppa, L. R. "Aneuploid Analysis in Tetraploid Wheat." In Agronomy Monographs. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/agronmonogr13.2ed.c11.

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Lapinski, Boguslaw, Barbara Apolinarska, Grzegorz Budzianowski, Malgorzata Cyran, and Maria Rakowska. "An Attempt at Tetraploid Triticale Improvement." In Triticale: Today and Tomorrow. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0329-6_81.

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Shenk, Elizabeth M., and Neil J. Ganem. "Generation and Purification of Tetraploid Cells." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3542-0_24.

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de Winton, D., and J. B. S. Haldane. "Linkage in the Tetraploid Primula Sinensis." In Selected Genetic Papers of J.B.S. Haldane (Routledge Revivals). Routledge, 2022. http://dx.doi.org/10.4324/9781315768694-39.

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Apolinarska, Barbara. "Different Chromosome Combinations on Tetra- and Hexaploid Level from Hybrids of Tetraploid Rye × Tetraploid Triticale." In Triticale: Today and Tomorrow. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0329-6_23.

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Münnich, C., M. Klaas, V. Bartels, and C. Gebhardt. "Creation of Novel Tetraploid Miscanthus sinensis Genotypes." In Perennial Biomass Crops for a Resource-Constrained World. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44530-4_11.

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da Cunha, Thalita Bordignon, Saulo Marçal de Sousa, Aryane Campos Reis, Elyabe Monteiro de Matos, and Lyderson Facio Viccini. "Synthetic Tetraploid of Oncidium crispum Lodd. (Orchidaceae)." In Plant Cell Culture Protocols. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3954-2_18.

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Atti di convegni sul tema "Tetraploid"

Polyudina, R., and V. Grishin. "METHODS OF CREATING SIBERIAN VARIETIES OF MEADOW CLOVER FOR THE AGRO-INDUSTRIAL COMPLEX OF RUSSIA." In The state and problems of agricultural science in Yenisei Siberia. Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087908_59.

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To increase the volume of production of vegetable protein feeds meadow clover plays an important role. Under the conditions of Western Siberia varieties were created: by the method of polycross – late-ripening type on a diploid basis SibNIIK 10, Rodnik Sibiri, Atlant; by the method of selections based on conjugate characteristics, the Ogonek variety was created; together with the V.R. Williams Federal Research Center, as a result of a combination of methods of mutagenesis, polyploidy, hybridization and selections, the Meteor variety, early-ripening type was created on a tetraploid basis; as a

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Gravendeel, Lonneke A., Nanne K. Kloosterhof, Linda B. Bralten, et al. "Abstract 3932: Tetraploid gliomas share molecular features with pilocytic astrocytomas." In Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FL. American Association for Cancer Research, 2011. http://dx.doi.org/10.1158/1538-7445.am2011-3932.

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Rekashus, Eduard, and Anna Makaeva. "Choosing parental pairs for development initial material of alsike clover." In Multifunctional adaptive feed production 27 (75). Federal Williams Research Center of Forage Production and Agroecology, 2022. http://dx.doi.org/10.33814/mak-2022-27-75-16-22.

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The article presents the results of a study in 2021 of 13 tetraploid selective varieties of alsike clover (Trifolium hybridum L.) from Norway, Germany, Sweden, Denmark, Canada, Latvia, Belarus and Russia in terms of the productivity of air-dry matter of the standing crop and seed yield. The observations were carried out in a greenhouse experiment set up in the greenhouse complex of the Federal Williams Research Center of Forage Production & Agroecology. The purpose of the research is to choose for crossing and further breeding work the most productive tetraploid clover genotypes from diffe

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Pecciarini, Lorenza, Valeria De Pascali, Ilaria Francaviglia, et al. "Abstract 756: Molecular characterization of triploid and tetraploid urine FISH samples." In Proceedings: AACR Annual Meeting 2017; April 1-5, 2017; Washington, DC. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.am2017-756.

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Ganem, Neil J., Kevin P. O'Rourke, and David Pellman. "Abstract 2941: Defining novel pathways that arrest genetically unstable tetraploid cells." In Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FL. American Association for Cancer Research, 2011. http://dx.doi.org/10.1158/1538-7445.am2011-2941.

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Liu, Jinlu, Ping Ye, and Bin Liu. "A Haplotype Reconstruction Algorithm for Tetraploid Individual Based on Enumeration Strategy." In BIC 2024: 2024 4th International Conference on Bioinformatics and Intelligent Computing. ACM, 2024. http://dx.doi.org/10.1145/3665689.3665747.

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Van Spijk, Ab C., Steve Barnes, and Jan Pertus. "Monitoring the nematode resistance gene in tetraploid pollinators by using genetic markers." In 33rd Biennial Meeting of American Society of Sugarbeet Technologist. ASSBT, 2005. http://dx.doi.org/10.5274/assbt.2005.29.

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Yuan xiangyue and Chen Zhongjia. "Experimental research on cutting force and cutting parameters of Tetraploid Black Locust." In 2011 International Conference on New Technology of Agricultural Engineering (ICAE). IEEE, 2011. http://dx.doi.org/10.1109/icae.2011.5943770.

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Кутузова, Анэля, Anel Kutuzova, Елена Проворная, Elena Provornaya, Надежда Цыбенко, and Nadezhda Tsybenko. "EFFICIENCY OF ANTHROPOGENIC ENERGY EXPENDITURES IN CREATION AND USE OF LEGUME-CEREAL GRASS OF CULTURAL PASTURE." In Multifunctional adaptive feed production. Federal Williams Research Center of Forage Production and Agroecology, 2019. http://dx.doi.org/10.33814/mak-2019-21-69-62-69.

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On legume-grass pasture grasslands with the participation of creeping clover (varieties VIC 70 and Lugovik), meadow clover (Tetraploid VIC and Veteran), alfalfa changeable (Pasture 88 and Agnia), the total cost of anthropogenic energy for the creation, care, use and production of feed in the exchange energy in a single SI system (GJ/ha) is determined. The high rates of return given the cost of collecting metabolizable energy per 1 GJ of metabolizable energy.

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Kuroda, Taruho S., Regina K. Dagher, and David Pellman. "Abstract A79: Genome‐wide RNAi screen for tetraploid‐specific lethality in cancer cells." In Abstracts: First AACR International Conference on Frontiers in Basic Cancer Research--Oct 8–11, 2009; Boston MA. American Association for Cancer Research, 2009. http://dx.doi.org/10.1158/0008-5472.fbcr09-a79.

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Rapporti di organizzazioni sul tema "Tetraploid"

Ladizinsky, Gideon, and Frederic Kolb. Transformation of the Wild Tetraploid Oats into Domesticated Forms. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7604296.bard.

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Santa S, Juan David, Jhon Alexander Berdugo C., Teresa Mosquera V., Nubia Liliana Cely, Mauricio Soto S., and Carlos H. Galeano M. QTL analysis for late blight resistance in an Andean Tetraploid potato population. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2016. http://dx.doi.org/10.21930/agrosavia.poster.2016.49.

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Un problema fitosanitario importante en la producción de papa en Colombia es el tizón tardío, causado por el oomiceto Phythopthora infestans (Mont) de Bary. Este problema fitosanitario puede alcanzar hasta el 100% de las pérdidas en el campo. En este momento, la producción de papa en Colombia cuenta con poca resistencia cultivares y dependientes del manejo de enfermedades principalmente en el uso de fungicidas, por lo tanto el control químico representa un impacto negativo en el medio ambiente y el consumidor. Por lo general, múltiples genes o QTL controlan la resistencia cuantitativa a las en

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Dubcovsky, Jorge, Tzion Fahima, and Ann Blechl. Positional cloning of a gene responsible for high grain protein content in tetraploid wheat. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7695875.bard.

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High Grain Protein Content (GPC) is a desirable trait in breadmaking and pasta wheat varieties because of its positive effects on quality and nutritional value. However, selection for GPC is limited by our poor understanding of the genes involved in the accumulation of protein in the grain. The long-term goal of this project is to provide a better understanding of the genes controlling GPC in wheat. The specific objectives of this project were: a) to develop a high-density genetic map of the GPC gene in tetraploid wheat, b) to construct a T. turgidum Bacterial Artificial Chromosome (BAC) libra

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Santa Sepúlveda, Juan David, Jhon Berdugo Cely, Mauricio Soto Suárez, Teresa Mosquera, and Carlos Galeano. A genetic linkage map of tetraploid potato (Solanum tuberosum L.) for Phytophthora infestans and Tecia solanivora quantitative resistance. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2016. http://dx.doi.org/10.21930/agrosavia.poster.2016.28.

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Los avances en la selección asistida de selección molecular y marcadores han sido limitados debido a a los problemas de alta heterocigosis y ploidía en el grupo de papa Andigenum (adg). Recientemente, Se han desarrollado mapas basados ??en SNP de alta densidad para papa diploide y tetraploide. Además, los modelos estadísticos que incluyen la dosificación alélica, están mejorando la vinculación mapeo y análisis de QTL en papa autotetraploide (Hackett et al., 2014). Estos enfoques han facilitado el análisis de QTL de rasgos agronómicos como resistencia a P. infestans (Massa et al., 2015). La pro

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Adelberg, Jeff, Halina Skorupska, Bill Rhodes, Yigal Cohen, and Rafael Perl-Treves. Interploid Hybridization of Cucumis melo and C. metuliferus. United States Department of Agriculture, 1999. http://dx.doi.org/10.32747/1999.7580673.bard.

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The long-term motivation for this research is to transfer useful traits from a broad based gene pool of wild species into the narrow base of a cultivated crop in Cucumis. Our primary focus was to use polyploid prior to fertilization as a tool to overcome fertility barriers in the cross between C. melo and C. metuliferus. In conducting this research, we explored all combinations of tetraploid and diploid parents, in reciprocal combinations. Pollinations were made in both the field and greenhouse, using emasculated flowers, moneocious females, and open pollination by insect vectors, with morphol

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Vargas Martinez, Juan de Jesús, A. M. Sierra, Yesid Avellaneda Avellaneda, Olga Lucía Mayorga Mogollón, and Claudia Janeth Ariza Nieto. Establishment and production of ryegrass and clover in two Colombian highland regions. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2018. http://dx.doi.org/10.21930/agrosavia.poster.2018.8.

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In Colombia, the specialized dairy systems are supported in forages use. However, edaphic and weather features are related with production and compositional quality of grasses. In this sense, it is important to recognize resilient fodder species to pastoral systems. The objective was to evaluate the establishment (covert proportion (%, Cp) and adaptation grade (0 to 3 scale, Ag) and production (dry matter yield (kg DM.ha-1, Dm) and net energy lactation (Mcal.kg DM-1 , Nl) of five perennial ryegrasses (three diploid and two tetraploid) and three clovers (two reds and one white) in two regions o

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Veilleux, Richard E., Jossi Hillel, A. Raymond Miller, and David Levy. Molecular Analysis by SSR of Genes Associated with Alkaloid Synthesis in a Segregating Monoploid Potato Family. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7570550.bard.

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More than 15,000 anthers of an interspecific hybrid (CP2) between two diploid (2n=2x=24) potato species, Solanum chacoense (weedy) and S. phureja (cultivated), were cultured to generate a family of monoploid (haploid, 2n-1x=12) plants. Of 260 regenerated plants, 34 were monoploid, 210 diploid and 16 tetraploid. SSR analysis revealed that six monoploids were genetically identical and 14 diploids were homozygous, thus limiting the population to 42 (28 monoploids and 14 homozygous diploids). New microsatellite loci were developed for potato from database sequences (15), a conventional genomic lib

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Devos, Katrien, Jeff Bennetzen, Ali Missaoui, and Paul Schliekelman. Unraveling the Genetics of Two Key Biomass Traits that Differentiate Upland and Lowland Tetraploid Switchgrass Ecotypes, Colonization by Mycorrhizal Fungi and Frost Tolerance. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1735505.

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Tel-Zur, Neomi, and Jeffrey J. Doyle. Role of Polyploidy in Vine Cacti Speciation and Crop Domestication. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7697110.bard.

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1. Abstract: Over the past 25 years, vine cacti of the genera Hylocereus and Selenicereus have been introduced into Israel and southern California as new exotic fruit crops. The importance of these crops lies in their high water use efficiency and horticultural potential as exotic fruit crops. Our collaboration focused on the cytological, molecular and evolutionary aspects of vine cacti polyploidization to confront the agricultural challenge of genetic improvement, ultimately to improve success of vine cacti as commercial fruit crop plants. More specifically, we worked on the: 1- Identificatio

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Dubcovsky, Jorge, Tzion Fahima, Ann Blechl, and Phillip San Miguel. Validation of a candidate gene for increased grain protein content in wheat. United States Department of Agriculture, 2007. http://dx.doi.org/10.32747/2007.7695857.bard.

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High Grain Protein Content (GPC) of wheat is important for improved nutritional value and industrial quality. However, selection for this trait is limited by our poor understanding of the genes involved in the accumulation of protein in the grain. A gene with a large effect on GPC was detected on the short arm of chromosome 6B in a Triticum turgidum ssp. dicoccoides accession from Israel (DIC, hereafter). During the previous BARD project we constructed a half-million clones Bacterial Artificial Chromosome (BAC) library of tetraploid wheat including the high GPC allele from DIC and mapped the G

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