Results 171 to 180 of about 72,561 (192)

POLLEN GERMINATION AND TUBE GROWTH

Annual Review of Plant Physiology and Plant Molecular Biology, 1997
▪ Abstract  Many aspects of Angiosperm pollen germination and tube growth are discussed including mechanisms of dehydration and rehydration, in vitro germination, pollen coat compounds, the dynamic involvement of cytoskeletal elements (actin, microtubules), calcium ion fluxes, extracellular matrix elements (stylar arabinogalactan proteins), and control
Loverine P., Taylor, Peter K., Hepler
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Actin in Pollen and Pollen Tubes

2000
Flowering plants rely on the highly polarized process of pollen tube growth for delivery of the sperm cells and thus for sexual reproduction. Although it has long been known that the actin cytoskeleton is necessary for pollen grain germination and tube growth, the precise structure of the actin arrays and their regulation by actin-associated proteins ...
Luis Vidali, Peter K. Hepler
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INDUCED POLLEN TUBE DIRECTIONALITY

American Journal of Botany, 1987
Pollen grains placed within longitudinal cuts in styles germinate and produce pollen tubes which grow equally well towards the stigma or the ovary. If there are simultaneous stigmatic pollinations, the growth of the intrastylar pollen tubes toward the stigma is significantly impeded.
Gabriella Bergamini Mulcahy, David L. Mulcahy   +1 more
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Gametophytic pollen tube guidance

Sexual Plant Reproduction, 2008
The concept of a pollen tube attractant was proposed in the late nineteenth century when pollen tubes were found to grow toward excised pistil tissues on medium. Since then, for about 140 years, plant biologists have tried to identify the pollen tube attractants.
Tetsuya Higashiyama, Yuki Hamamura
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Pollen Tube Chemotropism

1973
The pollen tube of flowering plants may grow through as much as 50 cm of the stylar tissue, enter the micropyle of an ovule and then discharge from its tip two non-motile sperm cells in the immediate vicinity of an unfertilized egg. This review is concerned with the factors that direct the pollen tube to the egg.
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STAINING IMBEDDED POLLEN TUBES

Canadian Journal of Plant Science, 1973
not available
C. G. CAMPBELL, S. H. NELSON
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Female gametophyte-controlled pollen tube guidance

Biochemical Society Transactions, 2010
During the evolution of flowering plants, their sperm cells have lost mobility and are transported from the stigma to the female gametophyte via the pollen tube to achieve double fertilization. Pollen tube growth and guidance is largely governed by the maternal sporophytic tissues of the stigma, style and ovule.
Mihaela-Luiza, Márton, Thomas, Dresselhaus   +1 more
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Pollen Germination and Pollen-Tube Growth

1987
Publisher 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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Culture of Pollen Tubes for Chromosomal Analysis at the Pollen Tube Division

Stain Technology, 1953
It is possible to grow pollen tubes routinely for cytological analysis of nuclei at the pollen tube division. Pollen has been grown successfully after temperature, pressure, gas, moisture, and radiation treatments. The technic for growing Tradescantia pollen is described, but any method is satisfactory which ensures that: (a) the pollen is kept dry ...
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Cotton Transformation via Pollen Tube Pathway

2012
Although many gene transfer methods have been employed for successfully obtaining transgenic cotton, the major constraint in cotton improvement is the limitation of genotype because the majority of transgenic methods require plant regeneration from a single transformed cell which is limited by cotton tissue culture.
Min, Wang, Baohong, Zhang, Qinglian, Wang   +2 more
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