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| | The Utility of the Diploid Map in Alfalfa Improvement |
 | | This map, which represents the genome of cultivated, tetraploid alfalfa, reduced to the diploid level, was constructed in a backcross population and consists of a map for each parent, joined by common markers. | | | The usefulness of diploid maps in the breeding of tetraploid alfalfa depends on a high degree of similarity between the genomes of diploid and tetraploid alfalfa. | | | Evidence that supports conservation of the diploid and tetraploid alfalfa genomes is the fact that they interbreed freely, and are considered to be subspecies of one another. |
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http://www.naaic.org/TAG/TAGpapers/Bouton/DiploidMapPaper.htm
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| | Cross Border Daylilies Canada Price List |
| | Bloom, Tetraploid, EM Re, Evergreen, - A silvery mauve plum with a plum claret eyezone and a yellow green throat- - $9.00 | | | Bloom, Tetraploid, M, Evergreen, Rebloomer Spider - A burgundy-purple spider variant with a cream-violet-plum-purple eyezone above a lime green to chartreuse throat. | | | Bloom, Tetraploid, M, Semi-evergreen, - A lavender self with a gold edge amd a yellow throat. |
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http://www.distinctly.on.ca/peat/cdn-price.htm
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| | The elongate method of generating tetraploid maize stocks, revisited |
| | Putative tetraploid embryo kernels with Ae-5180 phenotype were planted in our 1990-1991 winter nursery, and the resulting plants pollinated by a tetraploid W23 stock obtained from the Maize Stock Center. | | | Counts of Ae-5180 and wildtype kernels on ears from the cross of tetraploid plants carrying Ae-5180 by a tetraploid W23 (wildtype) stock. | | | Of 27 successful pollinations, two ears segregated for both plump (putative tetraploid embryo) and shriveled (triploid embryo) kernels, and thus must have been borne on el el plants. |
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http://www.maizegdb.org/mnl/66/11stinard.html
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| | Growing Seedless Watermelon |
| | The tetraploid is used as the female or seed parent and the diploid is the male or pollen parent (Figure 1). | | | Since the tetraploid seed parent produces only 5 to 10% as many seeds as a normal diploid plant, seed cost is 10 to 100 times more than that of standard, open-pollinated varieties and 5 to 10 times that of hybrid diploid watermelon varieties. | | | Tetraploid fruit are of high quality but will have seeds and must not be sold as seedless. |
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http://edis.ifas.ufl.edu/CV006
(2006 words)
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| | Correct my hexaploid rose math... (not for those who hate num... |
| | If I used Lady Penzence, a hybrid between eglanteria and the tetraploid R. foetida bicolor, using Applejack's tetraploid pollen, would the results be a hybrid with 2/3 LP and 1/4th AJ genes. | | | But if I pollinated eglanteria with tetraploid pollen, it will result a hexaploid hybrid with 42 chromasomes, 2/3rd of it which will eglanteria and 1/4th of the tetraploid. | | | So if I pollinated a tetraploid rose like a mini (specifically mini mosses and Basye's Blueberry and Thornless), it would result in a tetraploid. |
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http://www.rosemania.com/_disc3/000001f6.htm
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| | Hybrid Embryonic Stem Cell-Derived Tetraploid Mice Show Apparently Normal Morphological, Physiological, and Neurological Characteristics -- Schwenk et al. 23 (11): 3982 -- Molecular and Cellular Biology |
| | Li, X., Wei, W., Yong, J., Jia, Q., Yu, Y., Di, K. The genetic heterozygosity and fitness of tetraploid embryos and embryonic stem cells are crucial parameters influencing survival of mice derived from embryonic stem cells by tetraploid embryo aggregation. | | | Hybrid vigor, fetal overgrowth, and viability of mice derived by nuclear cloning and tetraploid embryo complementation. | | | Male and female mice derived from the same embryonic stem cell clone by tetraploid embryo complementation. |
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http://mcb.asm.org/cgi/content/full/23/11/3982
(4782 words)
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| | The Utility of the Diploid Map in Alfalfa Improvement |
| | The usefulness of diploid maps in the breeding of tetraploid alfalfa depends on a high degree of similarity between the genomes of diploid and tetraploid alfalfa. | | | Diploid and tetraploid alfalfa exhibit a large number of morphological and physiological differences, yet the genomes of these two forms are highly similar. | | | Diploid genetic maps in alfalfa should serve as an important framework for mapping in annual Medicago species, as well as in tetraploid species, and for transferring unique genes identified in diploids to the cultivated, tetraploid level. |
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http://www.naaic.org/TAG/TAGpapers/Bouton/DiploidMapPaper.htm
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| | THE QUEST FOR UNREDUCED GAMETES: PART I |
| | Tetraploids were introduced by inducing diploid daylilies with a chemical called colchicine. | | | A cross of a diploid with a tetraploid (or vice versa) may result in a pod forming; however, the presence of a “triploid block” in daylilies prevents most of these from reaching maturity, and the pods fall off. | | | Tetraploids rarely, if ever, produce 30 viable zygotes per pod, but that is the figure being used in the calculation. |
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http://members.cox.net/lilyhouse/new_page_3.htm
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| | diploid |
| | A tetraploid daylily will generally have larger flowers, larger plants, and better flower substance than a diploid. | | | SEEDS when pollinated with another diploid and a tetraploid will only form seeds when pollinated with another tetraploid. | | | A diploid can have large flowers, large plants and great flower substance, although if the same diploid plant is converted to a tetraploid, the plants' caracteristics will be enhanced. |
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http://www.daylilyparadise.com/diploid.html
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| | THE QUEST FOR UNREDUCED GAMETES: PART I |
| | Ploidy chimeras are common in plants treated with colchicine, part of the tissues being converted to tetraploid, other parts remaining diploid. | | | I have read of instances where the pollen from a converted plant was examined and found to contain both diploid and tetraploid sized grains. | | | UGs on the pod side would be evidenced by a diploid daylily being pollinated by tetraploid pollen and forming viable seeds which germinate and produce tetraploid daylilies. |
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http://members.cox.net/lilyhouse/new_page_3.htm
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| | Molecular Cytogenetics and Genome Organization - Pat Heslop-Harrison |
| | The presence of pSc119.2 in the tetraploid cytotype of H. murinum but its absence in the diploid cytotype suggests that the tetraploid is not likely to be an simple autotetraploid of the diploid. | | | In situ hybridization to diploid and tetraploid Avena species revealed that the probes showed a dispersed genomic organization and that they are present on both arms of all chromosomes. | | | Chromosome markers in the tetraploid wheat Aegilops ventricosa analysed by in situ hybridization. |
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http://www.le.ac.uk/biology/phh4/titleabst.htm
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| | Formation of stable epialleles and their paramutation-like interaction in tetraploid Arabidopsis thaliana - Nature Genetics |
| | Rapid formation of epialleles in tetraploids, followed by their trans-silencing interaction in tetraploid hybrids, is not necessarily limited to alleles but may also affect duplicated genes at non-allelic locations. | | | and with the frequency of paramutation in tetraploid tomato that is determined by the ratio of paramutagenic to paramutable alleles | | | Subsequent self-crossed generations of C4S1 and C4S2 (SSSS) remained sensitive, and outcrosses with the non-transgenic tetraploid resulted in sensitive hybrids (SS00) and their sensitive F |
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http://www.nature.com/ng/journal/v34/n4/full/ng1210.html
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| | ARS Publication request: Registration on Fc710 (4x) Tetraploid, Multigerm Sugar Beet Germplasm |
| | It is released as a tetraploid pollinator, or population from which to select tetraploid pollinators with resistance to rhizoctonia root rot and cercospora leaf spot. | | | It is released as a tetraploid pollinator, or population from which to select tetraploid pollinators with resistance to Rhizoctonia root rot and Cercospora leaf spot. | | | Interpretive Summary: FC710 (4X) (PI 633733) is tetraploid, multigerm, non-O-type, pseudo-self-fertile, and has 29% green hypocotyls (93 plants counted). |
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http://www.ars.usda.gov/research/publications/publications.htm?SEQ_NO_115=172602
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| | Seedless Watermelon |
| | Usually, multiple methods are used, identifying tetraploid seedlings using their phenotype in flats before transplanting, the chloroplast number in the stomatal guard cells of the true leaves in seedling flats and greenhouse pots, and by the appearance of the fruit and seeds at harvest after self-pollination in the greenhouse. | | | Tetraploid plants are selected (using methods such as leaf guard cell chloroplast number) in the T1 generation (plants from colchicine treated diploids) from the greenhouse flats where they were treated with colchicine. | | | A useful combination is for the tetraploid parent to have fruit with gray rind, the diploid parent to have fruit with wide stripes, so the resulting triploid hybrid will striped fruit, easily distinguished from the gray-fruited tetraploids that result from self- or sib-pollination of the female parent. |
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http://cuke.hort.ncsu.edu/cucurbit/wmelon/seedless.html
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| | Blastocyst microinjection/ TG facility |
| | Tetraploid embryos are produced using an electric pulse to fuse two blastomeres of 2-cell stage embryos, then incubated overnight. | | | The contribution of tetraploid embryos is primarily restricted to extraembryonic tissues. | | | In the case of mutant diploid or tetraploid embryos aggregations, the investigator must provide the facility with sufficient number of males and females of the proper age. |
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http://www.mshri.on.ca/cores/TGfacility/chimera.html
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| | The Talk.Origins Archive Post of the Month: January 1999 |
| | The difference between a tetraploid amphidiploid and a diploid, however, is that a diploid has 1 pair of every gene, whereas the tetraploid amphidiploid has 2 pairs of every gene. | | | They are reproductively isolated from diploid members of the same species, however - mate a tetraploid watermelon with a diploid watermelon and the result is a triploid which produces seedless watermelons. | | | I don't know that any tetraploid species of fish have been found but at least a few give evidence of being diploidised decendants of ancient tetraploids. |
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http://www.talkorigins.org/origins/postmonth/jan99.html
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| | DAYLILIES |
| | It is a splendid, 6½-inch, lavender-rose tetraploid with an attractive, yellow-gold edging and a large and showy, green to chartreuse throat. | | | All of these are tetraploids and each is a top-notch selection from recent crosses of some of the best parents available anywhere. | | | It is an exciting, evergreen tetraploid that begins to bloom in early spring and continues to bloom until early autumn. |
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http://www.durionursery.com/daylilies.htm
(14943 words)
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| | Pollen In Tetraploid Tomato Plants |
| | Tetraploid plantlets were regenerated with a chromosome set... | | | This phenomenon refers to the breakdown of SI in tetraploid plants that carry two... | | | restorer allele (rf) from tetraploid cottons apparently is not... |
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http://www.allergies-asthma.info/resources/pollen-in-tetraploid-tomato-plants.htm
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| | Potential of new tetraploid germplasm in Russian wildrye by K.H. Asay, D.A. Johnson, K.B. Jensen, W.M. Sarraj and D.H. Clark |
| | The tetraploids had significantly heavier seeds, greater seedling vigor, and they were significantly taller, and had longer and wider leaves than standard diploid (2n=2x=14) cultivars. | | | Results indicate that these tetraploid accessions can be used in the development of promising breeding populations and support earlier conclusions that tetraploid germplasm should receive emphasis in future Russian wildrye breeding programs. | | | Studies were conducted under semiarid conditions to evaluate the potential of tetraploid (2n=4x=28) Russian wildrye germplasm recently obtained from Kazakhstan. |
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http://uvalde.tamu.edu/jrm/sep96/asay.htm
(246 words)
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| | Wheat - Wikipedia, the free encyclopedia |
| | Einkorn wheat hybridized with another wild diploid grass (Triticum speltoides, Triticum tripsacoides or Triticum searsii) made the tetraploid (4x chromosomes) breeds, Emmer and Durum wheat. | | | durum) The only tetraploid form of wheat widely used today. | | | dicoccum) A tetraploid species, with wild and cultivated variants. |
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http://en.wikipedia.org/wiki/Wheat
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| | IMCS Publications |
| | Tetraploid induction by meiosis inhibition in the dwarf surfclam Mulinia lateralis : effects of cytochalasin B duration. | | | Tetraploid induction by meiosis inhibition with cytochalasin B in the dwarf surfclam, Mulinia lateralis Say: effects of temperature. | | | Optimization of tetraploid induction in the Pacific oysters, Crassostrea gigas, using the first polar body as a natural indicator. |
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http://www.marine.rutgers.edu/pubs
(8540 words)
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| | Tetraploid apples an pears |
| | I know there are tetraploid apples an pears around, but do not know where to get scionwood of them. | | | Martin, this is not how to find Tetraploid scion wood, but google search has some data on which ones are. | | | Tetraploid pears can be gotten from NCGR Corvallis but how do I get the scionwood to Germany? |
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http://www.cloudforest.com/cafe/forum/21305.html
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| | tetraploid |
| | These subspecies are tetraploid and capable of selfing, while a third subspecies of A. flavum is diploid and retains the sex-changing strategy. | | | tetraploid An organism, or a tissue whose cells contain four haploid sets of chromosomes. | | | In 1978, Mary Todd was the first tetraploid Stout Medal winner. |
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http://www.biometnews.com/biotechnology/tetraploid.html
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| | BioMed Central Full text Generation of single-copy transgenic mouse embryos directly from ES cells by tetraploid embryo complementation |
| | In sum, the availability of tetraploid aggregation-competent ES cells that support targeting of transgenes to the hprt locus should facilitate the rapid analysis of transcriptional regulatory elements in vivo as well as the phenotypic characterization of alleles that are incompatible with normal development. | | | ES-cell derived embryos were generated by aggregating clumps of around twenty ES cells with individual eight cell embryos or four cell embryos that had been made tetraploid by electrofusion as described previously [7,9,23]. | | | These data demonstrate that the hprt gene is not essential for the generation of embryos from ES cells by tetraploid aggregation and that F3 cells should could provide a suitable vehicle for the direct generation of transgenic mouse embryos. |
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http://www.biomedcentral.com/1472-6750/1/12
(4283 words)
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