| Only triploid or late-maturing rainbows are used, with steelheads, golden, tiger and blue trout. |
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| Double fertilization of egg cell and central cell initiates development of the diploid embryo and the triploid endosperm, respectively. |
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| One solution might be to plant triploid trees if they prove to have low fertility. |
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| Long-term plans allow for the stocking of triploid grass carp, as well as dredging deeper holes and boat lanes. |
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| Crossing experiments and field observations have shown that triploid individuals are sterile and no fruits are produced. |
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| Before examining the transcript levels in triploid hybrids, the effects of triploidy per se need to be considered. |
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| Two samples from the original data set were omitted because one was from a triploid plant and the other from a tetraploid. |
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| So-called triploid fish are unable to reach maturity and so are unable to breed. |
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| At this stage the triploid endosperm nuclei are approximately the same size as the diploid nuclei of the pericarp and nucellus. |
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| The first stage, grain enlargement, involves early, rapid division of the zygote and triploid nucleus. |
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| The triploid endosperm nucleus is derived from the fusion of two polar nuclei from the female parent and one sperm nucleus from the male. |
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| The complete set of chromosomes has been duplicated in triploid and tetraploid nuclei. |
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| Abnormal diploid, triploid and tetraploid nuclei with separated dual color signals were clearly distinguishable from normal nuclei. |
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| Sixty-one triploid F 1 plants were crossed with diploid pollen donors for testcrosses. |
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| The triploid and aneuploid clones studied yielded viable seeds whose number per fruit was strongly dependent on the pollen donor. |
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| Determined optimal diet and rearing conditions to improve the health and general performance of triploid Atlantic salmon in progress. |
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| Moreover, regulations concerning use of triploid versus diploid black carp vary across states. |
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| Gathered data to perform risk assessment of the ecological impact of escaped triploid salmon in natural systems in progress. |
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| For the purposes of this Policy document, sterile stocks means triploid stocks. |
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| Five previously licensed commercial rainbow trout operations will be re-licensed for triploid stocks only. |
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| The triploid state of 69 chromosomes rarely occurs and is not compatible with life. |
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| For this reason, 40 per cent of oysters grown in the United States are triploid. |
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| Being a triploid, having three sets of chromosomes instead of the usual two, it is sterile and reproduces by suckering, which precludes any genetic diversity. |
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| In this type of endosperm, which is the most common in cereals, development starts with several rounds of divisions of the triploid nucleus without cytokinesis. |
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| The endosperm, a result of double fertilization in flowering plants, is a triploid tissue whose genetic composition is more complex than diploid tissue. |
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| The aim of this work was to assess the fertility and breeding potential of the triploid and aneuploid hybrids with a view to developing an improved vine cactus crop. |
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| The diploid, the triploid and the pentaploid hybrids tested had the expected number of two, three and five rDNA hybridization sites, respectively. |
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| The aleurone is part of the triploid maize endosperm whereas the coleoptile, scutellum, scutellar node, and root are derived from the developing embryo. |
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| Because of the biological features of the plant, which is a sterile triploid propagated only by division of the corms, only evolutionary change linked to gamete reproduction will modify its genetic character. |
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| Making triploid grass carp more widely available in Canada for vegetation control would reduce risks of reproducing populations becoming established. |
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| Current regulations in states that allow black carp require triploid fish, and biosecurity measures are required at facilities which maintain broodstock. |
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| Although all species were brought in for culture, and often triploid strains were developed and maintained, all four species have escaped into the wild. |
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| More recently, the black carp have been triploid. |
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| Chromosomal evidence for laboratory synthesis of triploid hybrid between the gynogenetic teleost Poecilia formosa and host species. |
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| Produced triploid scallop larvae with high success. |
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| The resulting triploid oyster cannot propagate, which prevents introduced oysters from spreading into unwanted habitats. |
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| One line of investigation is the production of triploid charr using pressure treatments identical to those already used in salmon and trout aquaculture. |
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| But he says his fish could also be made triploid if necessary. Whether people will actually want to buy or eat the new fish is another question though they buy the meat of Belgian blue cattle at a premium. |
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| Secondgeneration rainbow trout tetraploids have been mated with diploids to produce 100 per cent triploid offspring, which are highly commercially attractive. |
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| Physical containment strategies are required for preventing environmental release and interactions with wild populations of fertile tetraploid shellfish broodstock that are used to produce triploid shellfish. |
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| There were a total of 11 aneuploid fetuses, including trisomies 13, 18, and 21, a triploid karyotype, Turner syndrome, and rare chromosomal aberrations. |
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| All triploid oysters produced by mating tetraploids and diploids. |
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| Triploid eggs produced mostly aneuploid larvae and had an extremely small chance of generating viable offspring when fertilized by sperm from diploid males. |
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