News tagged with pollen
Flower power: How to get ahead in advertising
Some plants go to extraordinary lengths to attract pollinators. A unique collaboration between plant scientists and physicists is revealing the full extent of botanical advertising.
Feb 03, 2012 |
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Get ready for spring - hay fever worse in spring than summer
Hay fever (runny nose, sneezing, itchy eyes) is caused by an allergy to pollen, and most commonly to grass pollen. These tiny grains bring misery to sufferers through spring and summer and pollen levels are often included ...
Dec 21, 2011 |
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Pollen research not be sniffed at
Pollen may annoy allergy sufferers in springtime but, viewed under the microscope, a pollen grain is a thing of beauty. Amazing images and facts about pollen are part of an exhibition at CSIRO Discovery in Canberra beginning ...
Nov 29, 2011 |
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Study of flower petals shows evolution at the cellular level
A new study of flower petals shows evolution in action, and contradicts more that 60 years of scientific thought.
Nov 17, 2011 |
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Researcher identifies 11 new sweat bee species
(PhysOrg.com) -- When a scientist discovers a new species, one of hardest tasks is naming it. A Cornell researcher faced this challenge many times over when he discovered 11 new U.S. sweat bee species (subgenus ...
Nov 15, 2011 |
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How does a plant survive with few mates or pollinators? A European herb has figured out its own way
In plants that rely on animals for pollination, the number of seeds they produce, or their relative fitness, is influenced by pollinator visits and the successful deposition of pollen. The number of visits ...
Nov 10, 2011 |
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Why are orchids so successful?
In terms of diversity, orchids are one of the most successful groups of flowering plants, with over 22,000 species. Both pollinating animals and mycorrhizal fungi are believed to have been important in the ...
Sep 13, 2011 |
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EU court backs angry honeymaker in GM pollen row
The presence of pollen from GM maize in honey, even in minuscule quantities, renders farm produce commercially void in the European Union, the bloc's top court said Tuesday.
Sep 06, 2011 |
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As agricultural riches waylay pollinators, an endangered tree suffers
For the conservation of species, hostile territory might sometimes have its advantages. That's according to a study of pollen flow among trees found only in remnant patches of native Chilean forest. The data show that the ...
Jul 21, 2011 |
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Team shows how the honey bee tolerates some synthetic pesticides
A new study reveals how enzymes in the honey bee gut detoxify pesticides commonly used to kill mites in the honey bee hive. This is the first study to tease out the precise molecular mechanisms that allow ...
Jul 20, 2011 |
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Common eastern bumblebee can boost pumpkin yields
(PhysOrg.com) -- Each grinning jack-o'-lantern starts with yellow pollen grains, ferried from a male to a female pumpkin flower by bees. Honeybee populations are in decline, but Cornell entomologist Brian ...
Jul 06, 2011 |
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How flowers use a touch of bling to woo the bees
(PhysOrg.com) -- Beetles use it, birds use it. Plants use it too. Iridescence is the shimmery colour effect that makes things eye-catching.
Jul 04, 2011 |
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Children's hay fever relieved by cellulose power without adverse effects
A cellulose powder has been used increasingly for many years against allergic rhinitis. Still, there has been a shortage of scientific evidence for its efficacy in seasonal allergic rhinitis (hay fever), particularly in children. ...
Jun 28, 2011 |
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Female mate choice enhances offspring fitness in an annual herb
In many organisms females directly or indirectly select mates (or sperm) and potentially influence the fitness of their offspring. Mate choice and sexual selection in plants is more complex in some ways than ...
Jun 27, 2011 |
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New research shows organic farming benefits insect biodiversity, pollination of wild plants
(PhysOrg.com) -- New research just published by ecologists at Trinity College Dublin, has shown that organic farming benefits insect biodiversity, insect-flower interactions and pollination of wild plants.
Jun 23, 2011 |
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Pollen
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. When pollen lands on a compatible pistil or female cone (i.e., when pollination has occurred), it germinates and produces a pollen tube that transfers the sperm to the ovule (or female gametophyte). Individual pollen grains are small enough to require magnification to see detail.
For more information about Pollen, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
