View allAll Photos Tagged Pollination
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 thrum eyed Primrose flower - longitudinal section
The flower is approximately 30 mm across and 30 mm tall.
Image by John Bebbington FRPS
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 - plan view
The flower is approximately 30 mm across and 30 mm tall.
Image by John Bebbington FRPS
From award-winning conservation biologist Dr. Reese Halter comes a remarkable, concise account of the honeybees that have profoundly shaped our planet for the past 110 million years. They are the most important group of flower-visiting animals, pollinating more multibillion-dollar crops and plants than any other living group. Since prehistoric times humans and honeybees have been inextricably linked. Over the past 5 years 50 billion honey bees have died. This easy-to-read account of the fascinating honey bee is a must read for anyone interested in the natural world. It offers hope; hope for the bees and hope for our species.
You can find Dr. Reese Halter's books at
The Bear and The Butterfly
214 Banff Ave
Banff, AB T1L 1C3
(403) 762-8911
Pollinator Planets. Two hanging baskets tied together. Filled with Bits of Ben's fur, twigs, hose pipe, ivy, old bark, fluff from the tumble drier, small branches and moss. I am really pleased with it.
Bees are found on every continent except Antarctica, and they have an important role in pollination and producing honey and beeswax. Photos: Jon Sullivan and Jack Dykinga
Design © HTM Images, 2011
A hummingbird moth makes use of blooming sunflower in September. Toole County, Montana September 2014.
Bumble Bees are very important pollinators in my area. When you begin to photograph bees you soon notice that many are very hairy. The backs of Bumble Bees are covered with a heavy coat of hair, light in color. Pollen sticks to the hair, so when a Bumble Bee visits another blossom of the same species it passes along some pollen to that blossom, thus fertilizing the plant.
Ong Bumble là côn trùng thụ phấn rất quan trọng trong khu vực của tôi. Khi bạn bắt đầu để chụp ảnh những con ong bạn sớm nhận thấy rằng nhiều người rất nhiều lông. Lưng của Bumble Bees được che phủ bằng một chiếc áo khoác nặng nề của mái tóc, ánh sáng màu. Phấn hoa dính vào tóc, vì vậy khi một Bumble Bee thăm một hoa của cùng một loài nó đi dọc theo một số phấn hoa để hoa đó, vì vậy bón phân cây.
Pollinators and spiders from the Penn State Southeast Agricultural Research and Extension Center, Landisville, PA
For more information on this and other resources, please visit extension.psu.edu/pesticide-education
Where trade names appear, no discrimination is intended, and no endorsement by
Penn State Cooperative Extension is implied.
Photos by Garo Goodrow, Multimedia Specialist
Penn State Pesticide Education Program
© The Pennsylvania State University 2014
Found this insect on a flower in my garden. He was super tiny, maybe a centimeter or so in length. The Super Takumar prime 55 got the shot almost perfectly.
Although most of us think of this as pollination, I believe the bug actually lost it's wallet in there and was trying to retrieve it. But that's just my opinion.
Pollination
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Pollinator at work! I like to think of our yard as a "natural eco-scape." While the random, wandering plants make a "messy", quirky, out-of-control palette, they're still delightful - - - here a crocus, there some daffodils, ah, there's the Jack-in-the-Pulpits, white violets, star of Bethlehem, dead nettle, spring beauty, blue volets. Some homeowners and landscapers think of these as invasives that need to be rooted out with extreme prejudice. Sounds like too much work to me. I'd rather enjoy them and share them with the pollinators. This season's "volunteer" arrival is Fleabane. We have quite a stand of it by the shed. The teeny, tiny flies and bees are loving their daisy-like flowers.