Results 241 to 250 of about 396,356 (292)

GERMINAL APERTURAL FORMATION IN POLLEN

TAXON, 1975
SummaryEvolutionary 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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Phytases of Germinating Lily Pollen

1986
Phytic 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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In vitro Pollen Germination

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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Pollen Germination and Tube Growth

2009
In 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, 1985
ABSTRACT 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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Acid rain and pollen germination in corn

Environmental Pollution, 1987
The properties of an acid rain episode that could influence the germination of pollen in corn, Zea mays L., were evaluated by treating silks with a simulated acid rain and measuring the subsequent germination of pollen on the silks. The data indicated that acid rain creates an inhospitable environment for pollen germination on the silk surface. Reduced
F S, Wertheim, L E, Craker
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Pollen Germination on Foreign Stigmas

Bulletin of the Torrey Botanical Club, 1970
MARTIN, F. W. (Federal Experiment Station, Mayaguez, Puerto Rico 00708). Pollen germination oll foreign stigmas. Bull. Torrey Bot. Club 97: 1-6. 1970.-Although pollens of many species ger minate in simple aqueous media, stigmas do not provide satisfactory sites for germination of most foreign pollens.
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Pollen Germination and Tube Growth

2010
Abstract Seeds and grains are staple food supply around the world and their production is the result of successful double fertilization of female gametophytes by male gametophytes. In flowering plants, the highly reduced haploid male gametophyte (pollen grain) plays a critical role in fertilization and crop production through the generation of a ...
Huei-Jing Wang, Jong-Chin Huang, Guang-Yuh Jauh   +2 more
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Cabbage pollen germination and longevity

Euphytica, 1974
Sixteen sugars were used as carbon sources in cabbage (Brassica oleracea L. var. capitata L.) pollen germination tests. Only six, sucrose, raffinose, lactose, maltose, melizitose, and trehalose supported germination. Sucrose produced the highest percentage of germination while raffinose produced the longest pollen tube.
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THE GERMINATION OF MAIZE POLLEN

Science, 1941
R A, Bair, W E, Loomis
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