View allAll Photos Tagged Pollination
BBG gardeners hand-pollinate Etricularia striata (striped bladderwort) in a Greenhouse Workhouse. Photo by Jeremy Weine.
Plant sex in action! ;-) The fuzzy stigma having done its job in capturing pollen grains from a visiting pollinator, now it's the pollens' turn to grow fertilization tubes down the style to find the ovules below.
This is a Geranium maculatum flower, taken with maximum magnification using the Raynox Macro lens on my PowerShot.
Butterfly on late blooming Sierra wildflower, Bridgeport Ranger District, Humboldt-Toiyabe National Forest. USDA Forest Service photo by Rachel Van Horne.
we surveyed heathlands at Lake of Islands in Cape Breton Highlands National Park early in the 2016 field season. Our group of researchers on this trip included (left to right): Caitlin Porter, Emily Walker and Logan Gray. This picture was taken as we came off the trail and arrived back at the truck, first moment of boots -off after a week of backpacking work
Let the fun begin! U.S. Fish and Wildlife staff lead a youth program on pollinators at Sullys Hill National Game Preserve in North Dakota.
Credit: USFWS
Find a refuge near you at: www.fws.gov/refuges/refugeLocator.html
Important pollinator in the Upper Sonoran Desert region. My silly dog loves to bulldoze her way through the grass: Nose down, rump up, chest to the mud. This pollen coated, sneezing beast is the net result.
Taken with a nikon point and shoot just before dusk.It was actually much lighter out than the picture leads you to believe.Photo was only re sized,no other modifications were made.
This picture of a bee on a flower was taken in Julia’s backyard. The bee is the pollinator because he is the agent that moves pollen from the male anthers of the flower to the female stigma of another flower to accomplish fertilization.
Collecting the pollen from Solanum chacoense, a wild relative of the potato, at Embrapa Clima Temperado. This pollen will be used to pollinate other individuals to produce seeds. Credit: Oriole Wagstaff
Our Farm Room honeycomb in 2011 highlighted nature's wide range of pollinators, from bees to bats to butterflies. Our annual Sweet 16 Honey-Tasting Tournament gives visitors a chance to vote on their favorite honey from a field of 16 varietal honeys brought in from around the world. The 2011 champ was a wild huckleberry honey from the Pacific Northwest.
PCAGOE Challenge Entry. Springtime means love is in the air, literally. The flowers are making love all over the place, and the bees are helping. Isn't that a great way to think of all that pollen, flowers making love, instead of just runny noses, watery eyes and sneezes.
Cross pollination in Primrose (Primula vulgaris) - the series shows both ‘pin eyed’ and 'thrum eyed' forms of the flower and illustrate the mechanism that ensures cross pollination.
Primula vulgaris (Primrose) has two forms of flower, a situation known as heteromorphy. In the two forms, the styles are of different lengths. If the style reaches to the top of the flower tube, it is the 'pin eyed' form, and the anthers are halfway down the tube. In the other form (known as 'thrum eyed'), the style is halfway down the tube and the anthers reach to the top. Heteromorphy is one example of a mechanism that encourages self-pollination.
When an insect inserts its proboscis into the flower, pollen is deposited in the right place for the style of the other form of the flower - so pollen from a pin eyed flower reaches the stigma of a thrum eyed flower, and vice versa. The stigma of a thrum eyed flower has short papillae whereas the stigma of a pin eyed flower has long papillae.
Pollen grains from a pin eyed flower are small and more likely to stick to the short papillae on the stigma of a thrum eyed flower (than to the longer papillae of a pin eyed flower). The converse occurs with the large pollen grains from a thrum eyed flower.
Even if self-pollination does occur, it rarely leads to fertilisation so that heteromorphy in these plants appears to be associated with self-incompatibility.
This image shows a pin eyed Primrose flower - longitudinal section
The flower is approximately 30 mm across and 30 mm tall.
Image by John Bebbington FRPS