Results 21 to 30 of about 284,770 (295)
Formation of the female generative structures in Deutzia scarba (Hydrangeaceae)
Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2005 The development and the structure of the ovule and the embryo sac of the representative of the family Hydrangeaceae Deutzia scarba are investigated. It is established that the ovule of the given species is hemitropic, tenuinucellatic, unitegmic.
T. M. Satarova, N. F. Pavlyukova
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KIT Is Required for Fetal Liver Hematopoiesis
Frontiers in Cell and Developmental Biology, 2021 In the mouse embryo, endothelial cell (EC) progenitors almost concomitantly give rise to the first blood vessels in the yolk sac and the large vessels of the embryo proper.
Alessandro Fantin +6 more
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Embryo sac development in some South African Lippia species (Verbenaceae) [PDF]
, 1984 Polygonum-type embryo sac development was found in Lippia javanica (Burm. f.) Spreng., L. rehmannii Pearson and L. wilmsii Pearson. Although the embryo sac development in the three species is similar, their mature embryo sacs differ morphologically ...
Spies, J.J.
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Anatomical Study on the Multi-Ovule Development and Abortion of Hanfu Apple
Journal of Integrative Agriculture, 2014 The terminal flower buds of 6-yr-old Hanfu apple were used to study the ovule development, ovular characteristics, cell death of abortive ovules, and dynamic change of starch grain quantity in the embryo sac with paraffin slices and terminal ...
Xu-yuan YANG +5 more
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Correlation between a loss of auxin signaling and a loss of proliferation in maize antipodal cells
Frontiers in Plant Science, 2015 The plant life cycle alternates between two genetically active generations: the diploid sporophyte and the haploid gametophyte. In angiosperms the gametophytes are sexually dimorphic and consist of only a few cells.
Antony Mathai Chettoor +1 more
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Megaspore competition in F1 and F2 hybrids between Oenothera hookeri and Oe. suaveolens
Acta Societatis Botanicorum Poloniae, 2014 Megasporogenesis and development of the embryo sac were investigated in F1 and F2 hybrids from crosses of Oe. hookeri and Oe. suaveolens. All hybrids form heteropolar and homopolar magaspore tetrads; the embryo sac, however, usually develops from the ...
Renata Śnieżko
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They Can't Have My Embryo: The Ethics of Conditional Embryo Donation [PDF]
, 2013 There are substantial numbers of frozen embryos in storage that will not be used by those who produced them for their own fertility treatment. One option for such embryos is to donate them to others to use in their fertility treatment.
Eric Blyth +4 more
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Spindle assembly checkpoint regulates mitotic cell cycle progression during preimplantation embryo development. [PDF]
PLoS ONE, 2011 Errors in chromosome segregation or distribution may result in aneuploid embryo formation, which causes implantation failure, spontaneous abortion, genetic diseases, or embryo death.
Yanchang Wei +13 more
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THE EMBRYO‐SAC AND EMBRYO OF GEISSOLOMA MARGINATA. [PDF]
New Phytologist, 1909 n ...
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