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Examples ofembryo sac
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This in turn was shown to depend on the growth rates of the embryo andembryosac, both of which differed between genotypes.
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The capillary often damages theembryosacor more frequently becomes plugged when it is dipped in the agarose and pushed into the cells.
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Egg cells and non-gametic cells of theembryosacwere released from the ovules after dissection with glass microneedles in a 3 cm plastic dish.
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Egg cells or zygotes isolated from theembryosacwere transferred with a microinjector into the trough in the centre of the optical field.
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The egg cell was then released by pressing the micropylar end of theembryosac.
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The partial protrusion of theembryosacthrough the micropyle of ovule facilitated penetration into the embryo sac wall and incision near the egg cell.
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An egg and two synergids can be observed clearly at anthesis in the partially protrudingembryosac.
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These techniques depend on the surgical removal of the embryo and endosperm and the transport of nutrients into the empty ovule orembryosac.
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Egg and synergid cells in theembryosacare pear-like.
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The non-gametic cells of theembryosac, synergids and central cells have also been isolated.
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Pollen tubes of the same cultivar frequently become blocked between the stigma andembryosacunder these conditions.
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While zygotes could be isolated in a 5% mannitol solution, it was necessary to press the micropylar end to release them when theembryosacwas excided by a needle.
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Eighteen hours after pollination, the fertilized egg cell began to elongate in theembryosac.
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In angiosperms, the megagametophyte is reduced to only a few nuclei and cells, and is sometimes called theembryosac.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The ovule contains a megagametophyte, also known as anembryosac, that is bipolar in structure and contains 8 cell nuclei.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In flowering plants, the megagametophyte (also referred to as theembryosac) is much smaller and typically consists of only seven cells and eight nuclei.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The placentation is apical andembryo-sacdevelopment is of polygonum-type.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In nucellar embryony, the embryo is formed from the diploid nucellus tissue surrounding theembryosac.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In oaks, early fertilized ovules prevent the fertilization of other ovules by inhibiting the pollen tube entry into theembryosac.
FromThis example is from Wikipedia and may be reused under a CC BY-SA license.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.