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UV/IR Thermal or Xray Photography Humans happen to use visible light naturally but now we can go beyond the usual wavelengths we appreciate, to find out more about our world and ourselves.

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Old May 6th, 2018, 12:41 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Default New type Gazania multispectral

A new breed of Gazania rigens, with filled center, very pretty...

Triptych of human vision, UV, simulated bee vision (left to right):

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Old May 6th, 2018, 06:49 AM
Asher Kelman Asher Kelman is offline
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Originally Posted by Dr Klaus Schmitt View Post
A new breed of Gazania rigens, with filled center, very pretty...

Triptych of human vision, UV, simulated bee vision (left to right):

Is this a cultivar or newly discovered but naturally developed?


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Old May 6th, 2018, 08:20 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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A cultivar this is, a new breed.
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Old May 6th, 2018, 09:07 AM
Asher Kelman Asher Kelman is offline
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The reason why I ask is that I try to think of how the UV and IR patterns in insect vision help it attract the pollinators it depends on. We would expect that most features observable in insect vision contribute to the flowers’ pollination success, or with flowers like the dandelion, did so in the distant ancestors.

Not that I have been able to understand these markings, but they must have evolutionary advantage somewhere.

Cultivars would perhaps be excluded from any such guidance.

Just a thought.

Asher
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Old May 7th, 2018, 01:33 AM
Dr Klaus Schmitt Dr Klaus Schmitt is offline
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Originally Posted by Asher Kelman View Post
The reason why I ask is that I try to think of how the UV and IR patterns in insect vision help it attract the pollinators it depends on. We would expect that most features observable in insect vision contribute to the flowers’ pollination success, or with flowers like the dandelion, did so in the distant ancestors.

Not that I have been able to understand these markings, but they must have evolutionary advantage somewhere.

Cultivars would perhaps be excluded from any such guidance.

Just a thought.

Asher
Cultivars carry on those marks but they are not part of the breeding process, an optimization based on humans perception, not a Darwin natural selection process indeed!

The evolutionary selection benefit has been researched already and the UV markings are well known to biologists.
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