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Pollen Germination and Pollen-Tube Growth
1987Publisher Summary Pollen germination and pollen-tube growth events when viewed either in culture or in the style are considered as biochemically, physiologically, and structurally complex. The various processes involved are each independent in some measure, but still all are interactive—namely, the successful attainment of the delivery of two male ...
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Pollen Germination and Pollen Tube Growth in Vitro
1992Pollen germination and pollen tube growth are prerequisites for fertilization and seed development. Because of the involvement of the pistillate tissue in nature, physiologic and biochemical investigations on pollen germination and pollen tube growth in vivo are rather difficult. In vitro germination techniques have therefore been used extensively on a
K. R. Shivanna, N. S. Rangaswamy
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Zymolyase removes callose from germinating pollen and pollen tube walls
Cell Biology International Reports, 1985The impermeable callosic wall that surrounds germinating pollen grains and pollen tubes is removed by brief treatment with Zymolyase, an enzyme preparation that hydrolyzes linear glucose polymers with beta-1,3 linkages. Zymolyase treatment does not interfere with pollen tube growth or cylosis in the vegetative cell.
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Pollen morphology and germination inNarcissus
The Botanical Magazine Tokyo, 1977Pollen grains of several species and varieties ofNarcissus were examined with a light microscope and a scanning electron microscope. Normal pollen grains were kidney- or spindle-shaped with a germination furrow and a reticulate structure similar to that of the pollen grains ofAmaryllis.
Spring Chen, Rikizo Ueda
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GERMINAL APERTURAL FORMATION IN POLLEN
TAXON, 1975SummaryEvolutionary proposals involving pollen grain characters have treated germinal apertures as though they were formed by one universal process and hence derivable from a common type. A review of published data on apertural formation for pollen ofSilene, Tradescantia, andNelumboand original information forEpilobiumindicates that there are several ...
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Molecular Basis of Pollen Germination in Cereals
Trends in Plant Science, 2019Understanding the molecular basis of pollen germination in cereals holds great potential to improve yield. Pollen, a highly specialized haploid male gametophyte, transports sperm cells through a pollen tube to the female ovule for fertilization, directly determining grain yield in cereal crops.
Kim, Y.-J., Zhang, D., Jung, K.-H.
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Phytases of Germinating Lily Pollen
1986Phytic acid is a well known constituent of seeds, where it acts as a phosphorus and myo-inositol reserve (Loewus 1983). Phytate is stored in the protein body as the mixed salt of potassium and magnesium and lesser amounts of calcium, iron, and manganese. Upon germination phytate is degraded, supplying the seedling with these constituents.
D. B. Dickinson, J. J. Lin
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1994
The ability to germinate fresh pollen on a “defined” medium offers opportunities for a number of areas of research. Applications, such as agrichemical assessment, gametophyte selection, etc., have been reported by a number of investigators over the last 25 years or more.
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The ability to germinate fresh pollen on a “defined” medium offers opportunities for a number of areas of research. Applications, such as agrichemical assessment, gametophyte selection, etc., have been reported by a number of investigators over the last 25 years or more.
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Pollen Germination and Tube Growth
2009In higher plants, the sexual organs, e.g. anther and pistil, are separated spatially either within a flower in hermaphrodite plants or in different flowers as in monoecious plants. Successful fertilization requires temporally and spatially coordinated development of male and female organs and gametophytes.
D.-Q. Shi, W.-C. Yang
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Germination of stress-tolerant Eucalyptus pollen
Journal of Cell Science, 1985ABSTRACT Earlier reports have indicated that the pollen of Eucalyptus is mechanically robust and unusually resistant to the osmotic stress imposed by immersion in water. We have investigated some of the features of the germination mechanism in the pollen of E. rhodantha with a view to clarifying the role of pollen-wall specializations in
J, Heslop-Harrison, Y, Heslop-Harrison
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