• Corpus ID: 85224310

Zalazek jako aktywny partner w procesie rozmnazania generatywnego roslin kwiatowych

@inproceedings{Sniezko2003ZalazekJA,
  title={Zalazek jako aktywny partner w procesie rozmnazania generatywnego roslin kwiatowych},
  author={R. Sniezko and B Chudzik},
  year={2003}
}
Immunodetection of some pectic, arabinogalactan proteins and hemicellulose epitopes in the micropylar transmitting tissue of apomictic dandelions (Taraxacum, Asteraceae, Lactuceae)
TLDR
The results point to the similar distribution of AGPs in different developmental stages, the absence of highly methyl-esterified homogalacturonan (HG) in transmitting tissue of ovule containing a mature embryo sac and the appearance of this pectin domain in the young seed containing the embryo and endosperm in apomictic Taraxacum.
CYTOEMBRYOLOGICAL ANALYSIS OF CAUSES FOR POOR SEED SET IN ALFALFA (MEDICAGO SATIVA L.)
TLDR
It appears that the number of ovules per pistil is not a crucial factor in seed set in alfalfa when fertilization efficiency is very low, and both poor fertilization and gradual ovule degeneration were factors causing poor seedSet in the investigated al falfa genotypes.

References

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Ultracytochemical Localization of Calcium in Micropyle and Embryo Sac of Brassica napus Before and After Pollination
TLDR
Calcium was more abundant in the exostome and endostome as compared with the other regions of the integuments, and was concentrated at the apoplast system, i.e. the intercellular matrix of the micropyle canal and the cell wall.
Signalling pathways in pollen tube growth and reorientation.
TLDR
A substantial amount of research has dealt with the identification of cellular messengers, their capacity to generate a signal and how the information is coded in that signal, but research is extending rapidly to other areas.
Micropylar exudate in Gasteria (Aloaceae) and its possible function in pollen tube growth.
TLDR
The micropylar exudate of Gasteria verrucosa (Mill.) H. Duval was studied using light and electron microscopic techniques and an interaction between the pollen tube and the micropyle has been proposed.
Pollen Tube Guidance by the Pistil of a Solanaceous Plant
TLDR
Pollen tubes within the ovary of N. alata do not appear to be precisely guided to the nearest ovule, and further, quantitative studies of growth in this region are needed.
Visualization of Membrane Calcium and Calmodulin in Embryo Sacs in situ and Isolated from Petunia hybrida L. and Nicotiana tabacum L.
TLDR
It is indicated that in the young embryo sacs of Petunia, both synergids and the central cell sequester relatively higher amounts of mCa2+ and CaM than the egg cell and the antipodals.
A PERIODIC ACID-SCHIFF'S SUBSTANCE RELATED TO THE DIRECTIONAL GROWTH OF POLLEN TUBE INTO EMBRYO SAC IN PASPALUM OVULES'
A B S T R A C T The presence of a periodic acid-Schiff's (PAS) substance at the micropylar portion of the ovules of Paspalum orbiculare and three other species of Paspalum has been revealed by
Pollen Tube Pathway in Chalazogamous Pistacia vera L.
TLDR
The pollen tube path from pollination to fertilization in Pistacia vera L., a chalazogamous species, is examined, finding that Chalazogamy occurs in a consistent way in pistachio, leading to a successful fertilization.
The nucellar epidermis and micropyle of Ornithogalum caudatum (Liliaceae) with a review of these structures in other taxa
TLDR
The nucellar epidermis of Ornithogalum caudatum is modified in its micropylar region to form a nu cellar cap which appears to preclude pathogen invasion and prevent desiccation of embryo and endosperm.
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